./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DataRace-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 17:24:23,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 17:24:23,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 17:24:23,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 17:24:23,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 17:24:23,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 17:24:23,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 17:24:23,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 17:24:23,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 17:24:23,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 17:24:23,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 17:24:23,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 17:24:23,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 17:24:23,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 17:24:23,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 17:24:23,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 17:24:23,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 17:24:23,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 17:24:23,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 17:24:23,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 17:24:23,169 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 17:24:23,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 17:24:23,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 17:24:23,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 17:24:23,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 17:24:23,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 17:24:23,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 17:24:23,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 17:24:23,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 17:24:23,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 17:24:23,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 17:24:23,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 17:24:23,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 17:24:23,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 17:24:23,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 17:24:23,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 17:24:23,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 17:24:23,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 17:24:23,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 17:24:23,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 17:24:23,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 17:24:23,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 17:24:23,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DataRace-32bit-GemCutter_Default.epf [2022-04-18 17:24:23,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 17:24:23,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 17:24:23,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 17:24:23,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 17:24:23,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 17:24:23,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 17:24:23,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 17:24:23,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 17:24:23,220 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 17:24:23,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 17:24:23,221 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 17:24:23,222 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 17:24:23,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 17:24:23,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 17:24:23,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 17:24:23,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 17:24:23,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 17:24:23,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 17:24:23,223 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 17:24:23,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 17:24:23,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 17:24:23,224 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 17:24:23,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 17:24:23,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 17:24:23,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 17:24:23,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-18 17:24:23,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 17:24:23,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 17:24:23,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 17:24:23,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 17:24:23,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 17:24:23,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 17:24:23,227 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2022-04-18 17:24:23,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 17:24:23,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 17:24:23,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-04-18 17:24:23,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 17:24:23,227 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-04-18 17:24:23,228 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-04-18 17:24:23,228 INFO L138 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:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2022-04-18 17:24:23,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 17:24:23,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 17:24:23,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 17:24:23,464 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 17:24:23,464 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 17:24:23,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2022-04-18 17:24:23,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fd2d9d11f/2b52040fb28f404fb9ebec74568795b0/FLAG3da799d0e [2022-04-18 17:24:23,952 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 17:24:23,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2022-04-18 17:24:23,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fd2d9d11f/2b52040fb28f404fb9ebec74568795b0/FLAG3da799d0e [2022-04-18 17:24:24,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fd2d9d11f/2b52040fb28f404fb9ebec74568795b0 [2022-04-18 17:24:24,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 17:24:24,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 17:24:24,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 17:24:24,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 17:24:24,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 17:24:24,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a71078e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24, skipping insertion in model container [2022-04-18 17:24:24,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 17:24:24,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 17:24:24,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-04-18 17:24:24,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 17:24:24,685 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 17:24:24,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i[30422,30435] [2022-04-18 17:24:24,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 17:24:24,768 INFO L208 MainTranslator]: Completed translation [2022-04-18 17:24:24,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24 WrapperNode [2022-04-18 17:24:24,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 17:24:24,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 17:24:24,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 17:24:24,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 17:24:24,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,824 INFO L137 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2022-04-18 17:24:24,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 17:24:24,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 17:24:24,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 17:24:24,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 17:24:24,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 17:24:24,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 17:24:24,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 17:24:24,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 17:24:24,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (1/1) ... [2022-04-18 17:24:24,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 17:24:24,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:24:24,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 17:24:24,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 17:24:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 17:24:24,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 17:24:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 17:24:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 17:24:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 17:24:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 17:24:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 17:24:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 17:24:24,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 17:24:24,940 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 17:24:25,024 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 17:24:25,025 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 17:24:25,141 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 17:24:25,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 17:24:25,210 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-18 17:24:25,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 05:24:25 BoogieIcfgContainer [2022-04-18 17:24:25,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 17:24:25,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 17:24:25,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 17:24:25,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 17:24:25,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 05:24:24" (1/3) ... [2022-04-18 17:24:25,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749521b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 05:24:25, skipping insertion in model container [2022-04-18 17:24:25,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:24:24" (2/3) ... [2022-04-18 17:24:25,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749521b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 05:24:25, skipping insertion in model container [2022-04-18 17:24:25,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 05:24:25" (3/3) ... [2022-04-18 17:24:25,236 INFO L111 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2022-04-18 17:24:25,240 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 17:24:25,241 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 17:24:25,241 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-04-18 17:24:25,249 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 17:24:25,292 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 17:24:25,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-04-18 17:24:25,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:24:25,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-04-18 17:24:25,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-04-18 17:24:25,370 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2022-04-18 17:24:25,380 INFO L340 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 [2022-04-18 17:24:25,381 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-04-18 17:24:25,531 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE] === [2022-04-18 17:24:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:24:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash -905348777, now seen corresponding path program 1 times [2022-04-18 17:24:25,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:24:25,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29704861] [2022-04-18 17:24:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:24:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:24:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:24:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 17:24:25,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 17:24:25,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29704861] [2022-04-18 17:24:25,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29704861] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 17:24:25,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 17:24:25,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 17:24:25,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282801474] [2022-04-18 17:24:25,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 17:24:25,769 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 17:24:25,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 17:24:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 17:24:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 17:24:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:25,792 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 17:24:25,793 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2022-04-18 17:24:25,793 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:25,998 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 4 remaining) [2022-04-18 17:24:25,999 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 4 remaining) [2022-04-18 17:24:25,999 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2022-04-18 17:24:25,999 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2022-04-18 17:24:26,000 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 17:24:26,009 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 17:24:26,010 INFO L306 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE,SAFE,SAFE,SAFE (1/2) [2022-04-18 17:24:26,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-04-18 17:24:26,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:24:26,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-04-18 17:24:26,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-04-18 17:24:26,053 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-04-18 17:24:26,054 INFO L340 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 [2022-04-18 17:24:26,054 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-18 17:24:26,110 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-04-18 17:24:26,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:24:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1963162803, now seen corresponding path program 1 times [2022-04-18 17:24:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:24:26,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469233084] [2022-04-18 17:24:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:24:26,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:24:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 17:24:26,155 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 17:24:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 17:24:26,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 17:24:26,200 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 17:24:26,200 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-04-18 17:24:26,201 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 17:24:26,202 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 17:24:26,203 INFO L306 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2022-04-18 17:24:26,203 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 17:24:26,203 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 17:24:26,226 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 17:24:26,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-04-18 17:24:26,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:24:26,231 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-04-18 17:24:26,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-04-18 17:24:26,235 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-04-18 17:24:26,236 INFO L340 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 [2022-04-18 17:24:26,236 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-18 17:24:26,362 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-04-18 17:24:26,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:24:26,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1598601745, now seen corresponding path program 1 times [2022-04-18 17:24:26,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:24:26,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568330527] [2022-04-18 17:24:26,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:24:26,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:24:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:24:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-04-18 17:24:26,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 17:24:26,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568330527] [2022-04-18 17:24:26,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568330527] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 17:24:26,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 17:24:26,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 17:24:26,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142227736] [2022-04-18 17:24:26,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 17:24:26,417 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 17:24:26,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 17:24:26,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 17:24:26,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 17:24:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:26,418 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 17:24:26,418 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2022-04-18 17:24:26,418 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:26,464 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 17:24:26,464 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-04-18 17:24:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:24:26,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1495826606, now seen corresponding path program 1 times [2022-04-18 17:24:26,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:24:26,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105235065] [2022-04-18 17:24:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:24:26,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:24:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 17:24:26,512 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 17:24:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 17:24:26,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 17:24:26,551 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 17:24:26,552 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-04-18 17:24:26,552 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 17:24:26,554 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 17:24:26,554 INFO L306 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2022-04-18 17:24:26,554 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 17:24:26,557 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 17:24:26,585 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 17:24:26,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-04-18 17:24:26,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:24:26,598 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-04-18 17:24:26,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-04-18 17:24:26,602 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2022-04-18 17:24:26,602 INFO L340 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 [2022-04-18 17:24:26,602 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-04-18 17:24:26,765 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE] === [2022-04-18 17:24:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:24:26,766 INFO L85 PathProgramCache]: Analyzing trace with hash 449419044, now seen corresponding path program 1 times [2022-04-18 17:24:26,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:24:26,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468837940] [2022-04-18 17:24:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:24:26,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:24:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:24:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-04-18 17:24:26,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 17:24:26,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468837940] [2022-04-18 17:24:26,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468837940] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 17:24:26,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 17:24:26,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 17:24:26,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831951420] [2022-04-18 17:24:26,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 17:24:26,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 17:24:26,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 17:24:26,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 17:24:26,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 17:24:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:26,825 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 17:24:26,825 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 17:24:26,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:33,676 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 4 remaining) [2022-04-18 17:24:33,676 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 4 remaining) [2022-04-18 17:24:33,677 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2022-04-18 17:24:33,677 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2022-04-18 17:24:33,677 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 17:24:33,679 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 17:24:33,679 INFO L306 ceAbstractionStarter]: Result for error location thr1Thread3of3ForFork0 was SAFE,SAFE,SAFE,SAFE (1/4) [2022-04-18 17:24:33,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-04-18 17:24:33,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:24:33,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-04-18 17:24:33,693 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2022-04-18 17:24:33,693 INFO L340 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 [2022-04-18 17:24:33,694 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-18 17:24:33,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2022-04-18 17:24:33,814 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-04-18 17:24:33,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:24:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash -257738293, now seen corresponding path program 1 times [2022-04-18 17:24:33,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:24:33,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095268764] [2022-04-18 17:24:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:24:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:24:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:24:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-18 17:24:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 17:24:34,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095268764] [2022-04-18 17:24:34,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095268764] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 17:24:34,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 17:24:34,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 17:24:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541754005] [2022-04-18 17:24:34,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 17:24:34,013 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 17:24:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 17:24:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 17:24:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 17:24:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:34,014 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 17:24:34,014 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 17:24:34,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:34,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:34,061 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 17:24:34,061 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-04-18 17:24:34,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:24:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash -475361297, now seen corresponding path program 1 times [2022-04-18 17:24:34,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:24:34,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758384001] [2022-04-18 17:24:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:24:34,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:24:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:24:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-04-18 17:24:34,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 17:24:34,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758384001] [2022-04-18 17:24:34,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758384001] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 17:24:34,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 17:24:34,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 17:24:34,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456497730] [2022-04-18 17:24:34,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 17:24:34,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 17:24:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 17:24:34,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 17:24:34,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 17:24:34,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:34,120 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 17:24:34,121 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-04-18 17:24:34,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:34,121 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:34,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 17:24:34,173 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 17:24:34,173 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-04-18 17:24:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:24:34,174 INFO L85 PathProgramCache]: Analyzing trace with hash 813440712, now seen corresponding path program 1 times [2022-04-18 17:24:34,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:24:34,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475072259] [2022-04-18 17:24:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:24:34,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:24:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 17:24:34,189 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 17:24:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 17:24:34,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 17:24:34,211 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 17:24:34,212 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-04-18 17:24:34,212 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 17:24:34,213 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 17:24:34,213 INFO L306 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/4) [2022-04-18 17:24:34,214 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 17:24:34,214 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 17:24:34,232 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 17:24:34,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-04-18 17:24:34,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:24:34,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-04-18 17:24:34,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2022-04-18 17:24:34,238 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of4ForFork0 ======== [2022-04-18 17:24:34,238 INFO L340 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 [2022-04-18 17:24:34,239 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-04-18 17:24:34,384 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE] === [2022-04-18 17:24:34,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:24:34,385 INFO L85 PathProgramCache]: Analyzing trace with hash -397056458, now seen corresponding path program 1 times [2022-04-18 17:24:34,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:24:34,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894989527] [2022-04-18 17:24:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:24:34,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:24:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:24:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-04-18 17:24:34,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 17:24:34,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894989527] [2022-04-18 17:24:34,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894989527] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 17:24:34,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 17:24:34,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 17:24:34,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270801462] [2022-04-18 17:24:34,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 17:24:34,410 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 17:24:34,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 17:24:34,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 17:24:34,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 17:24:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:24:34,411 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 17:24:34,411 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 17:24:34,411 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.