./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/config/GemCutterReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-DataRace-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i --witnessprinter.witness.filename witness.graphml --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 ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 14:09:27,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 14:09:27,947 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/config/svcomp-DataRace-32bit-GemCutter_Default.epf [2023-11-06 14:09:27,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 14:09:27,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 14:09:28,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 14:09:28,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 14:09:28,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 14:09:28,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 14:09:28,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 14:09:28,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 14:09:28,013 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 14:09:28,013 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 14:09:28,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 14:09:28,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 14:09:28,017 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 14:09:28,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 14:09:28,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 14:09:28,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 14:09:28,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 14:09:28,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 14:09:28,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 14:09:28,020 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-06 14:09:28,020 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 14:09:28,021 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 14:09:28,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 14:09:28,022 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 14:09:28,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 14:09:28,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 14:09:28,023 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-06 14:09:28,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 14:09:28,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 14:09:28,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 14:09:28,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 14:09:28,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 14:09:28,026 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 14:09:28,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 14:09:28,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-06 14:09:28,027 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-06 14:09:28,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-06 14:09:28,027 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 14:09:28,028 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-06 14:09:28,028 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-06 14:09:28,028 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_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 [2023-11-06 14:09:28,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 14:09:28,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 14:09:28,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 14:09:28,411 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 14:09:28,411 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 14:09:28,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/../../sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-11-06 14:09:31,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 14:09:31,979 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 14:09:31,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/sv-benchmarks/c/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-11-06 14:09:32,013 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/data/04758adc6/a4f9894e69024b768687e58cb7149eb9/FLAGf695ca246 [2023-11-06 14:09:32,027 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/data/04758adc6/a4f9894e69024b768687e58cb7149eb9 [2023-11-06 14:09:32,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 14:09:32,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 14:09:32,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 14:09:32,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 14:09:32,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 14:09:32,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fc89de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32, skipping insertion in model container [2023-11-06 14:09:32,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,087 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 14:09:32,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:09:32,499 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 14:09:32,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 14:09:32,653 INFO L206 MainTranslator]: Completed translation [2023-11-06 14:09:32,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32 WrapperNode [2023-11-06 14:09:32,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 14:09:32,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 14:09:32,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 14:09:32,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 14:09:32,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,742 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 183 [2023-11-06 14:09:32,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 14:09:32,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 14:09:32,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 14:09:32,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 14:09:32,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 14:09:32,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 14:09:32,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 14:09:32,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 14:09:32,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (1/1) ... [2023-11-06 14:09:32,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 14:09:32,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:32,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:32,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 14:09:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 14:09:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 14:09:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 14:09:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 14:09:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 14:09:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 14:09:32,902 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 14:09:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 14:09:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 14:09:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 14:09:32,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 14:09:32,904 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 14:09:33,061 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 14:09:33,063 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 14:09:33,439 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 14:09:33,451 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 14:09:33,463 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-11-06 14:09:33,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:09:33 BoogieIcfgContainer [2023-11-06 14:09:33,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 14:09:33,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 14:09:33,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 14:09:33,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 14:09:33,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:09:32" (1/3) ... [2023-11-06 14:09:33,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4e564a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:09:33, skipping insertion in model container [2023-11-06 14:09:33,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:09:32" (2/3) ... [2023-11-06 14:09:33,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4e564a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:09:33, skipping insertion in model container [2023-11-06 14:09:33,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:09:33" (3/3) ... [2023-11-06 14:09:33,486 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-11-06 14:09:33,497 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 14:09:33,510 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 14:09:33,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 14:09:33,511 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 14:09:33,626 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 14:09:33,684 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:33,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:09:33,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:33,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:33,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-06 14:09:33,749 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:09:33,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of1ForFork0 ======== [2023-11-06 14:09:33,772 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=LoopsAndPotentialCycles, 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;@63163db0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:33,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 14:09:34,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-06 14:09:34,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1623321504, now seen corresponding path program 1 times [2023-11-06 14:09:34,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:34,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456454703] [2023-11-06 14:09:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:34,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:34,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:34,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456454703] [2023-11-06 14:09:34,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456454703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:34,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:34,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 14:09:34,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742907287] [2023-11-06 14:09:34,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:34,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 14:09:34,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:34,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 14:09:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 14:09:34,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:34,491 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:34,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-11-06 14:09:34,492 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:34,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 14:09:34,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-06 14:09:34,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash 163664619, now seen corresponding path program 1 times [2023-11-06 14:09:34,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:34,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802391604] [2023-11-06 14:09:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:34,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:35,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:35,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:35,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802391604] [2023-11-06 14:09:35,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802391604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:35,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820932706] [2023-11-06 14:09:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:35,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:35,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:35,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:35,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 14:09:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:35,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 14:09:35,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:35,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:35,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820932706] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:35,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:35,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 14:09:35,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443431753] [2023-11-06 14:09:35,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:35,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 14:09:35,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 14:09:35,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-06 14:09:35,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:35,544 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:35,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2023-11-06 14:09:35,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:35,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 14:09:35,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 14:09:35,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-06 14:09:35,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-06 14:09:35,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1352369126, now seen corresponding path program 1 times [2023-11-06 14:09:35,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:35,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093164638] [2023-11-06 14:09:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:35,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:36,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:36,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093164638] [2023-11-06 14:09:36,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093164638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:36,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:36,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 14:09:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845683229] [2023-11-06 14:09:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:36,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 14:09:36,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:36,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 14:09:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 14:09:36,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:36,042 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:36,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:36,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:36,043 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2023-11-06 14:09:36,044 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 14:09:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:36,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 6 remaining) [2023-11-06 14:09:36,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2023-11-06 14:09:36,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2023-11-06 14:09:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2023-11-06 14:09:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2023-11-06 14:09:36,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2023-11-06 14:09:36,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 14:09:36,124 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 14:09:36,126 INFO L307 ceAbstractionStarter]: Result for error location t_funThread1of1ForFork0 was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-11-06 14:09:36,132 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:36,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:09:36,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:36,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:36,155 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:09:36,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-06 14:09:36,156 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=LoopsAndPotentialCycles, 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;@63163db0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:36,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 14:09:36,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2023-11-06 14:09:36,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-06 14:09:36,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:36,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1400671750, now seen corresponding path program 1 times [2023-11-06 14:09:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:36,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526320602] [2023-11-06 14:09:36,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:36,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 14:09:36,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 14:09:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 14:09:36,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 14:09:36,412 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 14:09:36,413 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-06 14:09:36,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-06 14:09:36,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-06 14:09:36,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-06 14:09:36,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-06 14:09:36,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-06 14:09:36,414 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-06 14:09:36,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 14:09:36,419 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 14:09:36,420 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-11-06 14:09:36,421 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 14:09:36,421 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 14:09:36,483 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 14:09:36,491 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:36,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:09:36,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:36,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:36,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2023-11-06 14:09:36,503 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:09:36,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread1of2ForFork0 ======== [2023-11-06 14:09:36,504 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=LoopsAndPotentialCycles, 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;@63163db0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:36,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 14:09:36,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-06 14:09:36,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:36,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1581496714, now seen corresponding path program 1 times [2023-11-06 14:09:36,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:36,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919985625] [2023-11-06 14:09:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:36,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:36,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:36,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919985625] [2023-11-06 14:09:36,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919985625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:36,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:36,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 14:09:36,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712604547] [2023-11-06 14:09:36,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:36,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 14:09:36,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:36,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 14:09:36,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 14:09:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:36,803 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:36,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-11-06 14:09:36,803 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:37,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 14:09:37,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-06 14:09:37,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1805881216, now seen corresponding path program 1 times [2023-11-06 14:09:37,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:37,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724759079] [2023-11-06 14:09:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:37,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 14:09:37,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:37,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724759079] [2023-11-06 14:09:37,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724759079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:37,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892471963] [2023-11-06 14:09:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:37,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:37,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:37,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:37,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 14:09:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:37,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 14:09:37,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 14:09:37,980 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 14:09:37,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892471963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:37,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 14:09:37,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-06 14:09:37,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026903349] [2023-11-06 14:09:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:37,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 14:09:37,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:37,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 14:09:37,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 14:09:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:37,985 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:37,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 14:09:37,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:37,986 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:38,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 14:09:38,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:38,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-06 14:09:38,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1221511649, now seen corresponding path program 1 times [2023-11-06 14:09:38,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:38,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977444528] [2023-11-06 14:09:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:38,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 14:09:38,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977444528] [2023-11-06 14:09:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977444528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 14:09:38,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835672503] [2023-11-06 14:09:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:38,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:38,623 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 14:09:38,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 14:09:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:38,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 14:09:38,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 14:09:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:38,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 14:09:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 14:09:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835672503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 14:09:38,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 14:09:38,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-11-06 14:09:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015924922] [2023-11-06 14:09:38,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 14:09:38,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 14:09:38,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:38,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 14:09:38,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-06 14:09:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:38,999 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:39,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.0625) internal successors, (145), 16 states have internal predecessors, (145), 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) [2023-11-06 14:09:39,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:39,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:39,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 14:09:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 14:09:39,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 6 remaining) [2023-11-06 14:09:39,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2023-11-06 14:09:39,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2023-11-06 14:09:39,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2023-11-06 14:09:39,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2023-11-06 14:09:39,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2023-11-06 14:09:39,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 14:09:40,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 14:09:40,051 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-06 14:09:40,051 INFO L307 ceAbstractionStarter]: Result for error location t_funThread1of2ForFork0 was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/3) [2023-11-06 14:09:40,055 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:40,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:09:40,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:40,057 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:40,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2023-11-06 14:09:40,066 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:09:40,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-06 14:09:40,067 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=LoopsAndPotentialCycles, 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;@63163db0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:40,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 14:09:40,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-06 14:09:40,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1700607839, now seen corresponding path program 1 times [2023-11-06 14:09:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:40,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966291821] [2023-11-06 14:09:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:40,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 14:09:40,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 14:09:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 14:09:40,233 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 14:09:40,233 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 14:09:40,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-06 14:09:40,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-06 14:09:40,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-06 14:09:40,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-06 14:09:40,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-06 14:09:40,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-06 14:09:40,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-06 14:09:40,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 14:09:40,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 14:09:40,238 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (2/3) [2023-11-06 14:09:40,238 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 14:09:40,238 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 14:09:40,278 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 14:09:40,282 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:40,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:09:40,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:40,292 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:40,309 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:09:40,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-06 14:09:40,310 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=LoopsAndPotentialCycles, 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;@63163db0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:40,310 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 14:09:40,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2023-11-06 14:09:40,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2023-11-06 14:09:40,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:40,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2110464037, now seen corresponding path program 1 times [2023-11-06 14:09:40,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:40,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810563020] [2023-11-06 14:09:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:40,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 14:09:40,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 14:09:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 14:09:40,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 14:09:40,567 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 14:09:40,568 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-06 14:09:40,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-06 14:09:40,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-06 14:09:40,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-06 14:09:40,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-06 14:09:40,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-06 14:09:40,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-06 14:09:40,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 14:09:40,573 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 14:09:40,574 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/4) [2023-11-06 14:09:40,574 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 14:09:40,574 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-06 14:09:40,634 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 14:09:40,639 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:40,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-06 14:09:40,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 [2023-11-06 14:09:40,647 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-06 14:09:40,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a6eb3f7-0063-4f3f-b7d9-6c0974b92492/bin/ugemcutter-verify-t8buoWUS1i/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2023-11-06 14:09:40,664 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-06 14:09:40,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t_funThread4of4ForFork0 ======== [2023-11-06 14:09:40,665 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=LoopsAndPotentialCycles, 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;@63163db0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 14:09:40,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-06 14:09:40,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2023-11-06 14:09:40,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 14:09:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash 384582101, now seen corresponding path program 1 times [2023-11-06 14:09:40,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 14:09:40,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255030591] [2023-11-06 14:09:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 14:09:40,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 14:09:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 14:09:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 14:09:40,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 14:09:40,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255030591] [2023-11-06 14:09:40,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255030591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 14:09:40,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 14:09:40,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 14:09:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158726518] [2023-11-06 14:09:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 14:09:40,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 14:09:40,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 14:09:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 14:09:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 14:09:40,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 14:09:40,921 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-06 14:09:40,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.5) internal successors, (43), 3 states have internal predecessors, (43), 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) [2023-11-06 14:09:40,922 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.