./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/06_ticket.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/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/06_ticket.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:03:41,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:03:41,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:03:41,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:03:41,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:03:41,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:03:41,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:03:41,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:03:41,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:03:41,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:03:41,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:03:41,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:03:41,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:03:41,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:03:41,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:03:41,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:03:41,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:03:41,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:03:41,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:03:41,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:03:41,125 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:03:41,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:03:41,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:03:41,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:03:41,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:03:41,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:03:41,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:03:41,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:03:41,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:03:41,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:03:41,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:03:41,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:03:41,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:03:41,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:03:41,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:03:41,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:03:41,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:03:41,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:03:41,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:03:41,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:03:41,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:03:41,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:03:41,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:03:41,170 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:03:41,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:03:41,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:03:41,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:03:41,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:03:41,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:03:41,171 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:03:41,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:03:41,172 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:03:41,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:03:41,173 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:03:41,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:03:41,173 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:03:41,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:03:41,173 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:03:41,174 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:03:41,174 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:03:41,174 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:03:41,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:03:41,176 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:03:41,176 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:03:41,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:03:41,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:03:41,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:03:41,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:03:41,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:03:41,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:03:41,177 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:03:41,177 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:03:41,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:03:41,177 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:03:41,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:03:41,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:03:41,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:03:41,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:03:41,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:03:41,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:03:41,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:03:41,179 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:03:41,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:03:41,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:03:41,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:03:41,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:03:41,179 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UTaipan-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d21b75ab9211f19b3beb5c83d6d66f0a0906e2f271e4621d3ded70db8a63bb33 [2022-04-18 19:03:41,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:03:41,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:03:41,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:03:41,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:03:41,370 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:03:41,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/06_ticket.i [2022-04-18 19:03:41,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3bcb3ad7/0eecc89a856d47249bdbc6f0e3b5303f/FLAGabdb4b17e [2022-04-18 19:03:41,821 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:03:41,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/06_ticket.i [2022-04-18 19:03:41,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3bcb3ad7/0eecc89a856d47249bdbc6f0e3b5303f/FLAGabdb4b17e [2022-04-18 19:03:41,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d3bcb3ad7/0eecc89a856d47249bdbc6f0e3b5303f [2022-04-18 19:03:41,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:03:41,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:03:41,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:03:41,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:03:41,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:03:41,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:03:41" (1/1) ... [2022-04-18 19:03:41,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25152090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:41, skipping insertion in model container [2022-04-18 19:03:41,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:03:41" (1/1) ... [2022-04-18 19:03:41,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:03:41,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:03:42,124 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/06_ticket.i[30728,30741] [2022-04-18 19:03:42,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:03:42,132 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:03:42,180 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/06_ticket.i[30728,30741] [2022-04-18 19:03:42,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:03:42,210 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:03:42,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42 WrapperNode [2022-04-18 19:03:42,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:03:42,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:03:42,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:03:42,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:03:42,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,251 INFO L137 Inliner]: procedures = 172, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2022-04-18 19:03:42,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:03:42,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:03:42,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:03:42,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:03:42,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:03:42,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:03:42,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:03:42,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:03:42,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (1/1) ... [2022-04-18 19:03:42,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:03:42,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:03:42,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 19:03:42,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 19:03:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:03:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:03:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:03:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 19:03:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:03:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:03:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:03:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:03:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 19:03:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:03:42,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:03:42,333 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 19:03:42,448 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:03:42,450 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:03:44,810 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:03:44,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:03:44,848 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 19:03:44,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:03:44 BoogieIcfgContainer [2022-04-18 19:03:44,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:03:44,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:03:44,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:03:44,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:03:44,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:03:41" (1/3) ... [2022-04-18 19:03:44,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19be027d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:03:44, skipping insertion in model container [2022-04-18 19:03:44,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:03:42" (2/3) ... [2022-04-18 19:03:44,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19be027d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:03:44, skipping insertion in model container [2022-04-18 19:03:44,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:03:44" (3/3) ... [2022-04-18 19:03:44,864 INFO L111 eAbstractionObserver]: Analyzing ICFG 06_ticket.i [2022-04-18 19:03:44,867 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:03:44,868 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:03:44,868 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-04-18 19:03:44,868 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:03:44,914 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:03:44,944 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:03:44,948 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=FINITE_AUTOMATA, 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 19:03:44,949 INFO L341 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-04-18 19:03:44,957 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:03:44,965 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 113 transitions, 231 flow [2022-04-18 19:03:44,967 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 113 transitions, 231 flow [2022-04-18 19:03:44,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 109 places, 113 transitions, 231 flow [2022-04-18 19:03:44,994 INFO L129 PetriNetUnfolder]: 8/124 cut-off events. [2022-04-18 19:03:44,995 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:03:44,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 8/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 130 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2022-04-18 19:03:45,001 INFO L116 LiptonReduction]: Number of co-enabled transitions 2296 [2022-04-18 19:04:26,987 WARN L232 SmtUtils]: Spent 41.87s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:05:02,548 WARN L232 SmtUtils]: Spent 35.56s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:05:38,076 WARN L232 SmtUtils]: Spent 35.52s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:06:04,642 WARN L232 SmtUtils]: Spent 26.57s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:06:36,013 WARN L232 SmtUtils]: Spent 30.95s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:07:00,462 WARN L232 SmtUtils]: Spent 24.45s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:07:33,800 WARN L232 SmtUtils]: Spent 33.34s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:07:49,488 WARN L232 SmtUtils]: Spent 15.69s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:08:19,162 WARN L232 SmtUtils]: Spent 28.92s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:09:03,583 WARN L232 SmtUtils]: Spent 44.42s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:09:39,077 WARN L232 SmtUtils]: Spent 35.49s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:10:16,843 WARN L232 SmtUtils]: Spent 37.77s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:10:36,799 WARN L232 SmtUtils]: Spent 19.95s on a formula simplification. DAG size of input: 43 DAG size of output: 34 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:10:47,870 WARN L232 SmtUtils]: Spent 11.07s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:12:11,902 WARN L232 SmtUtils]: Spent 1.40m on a formula simplification. DAG size of input: 47 DAG size of output: 38 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:12:36,286 WARN L232 SmtUtils]: Spent 24.38s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:12:56,287 WARN L232 SmtUtils]: Spent 20.00s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:13:29,528 WARN L232 SmtUtils]: Spent 30.98s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:13:47,276 WARN L232 SmtUtils]: Spent 17.75s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:13:47,813 INFO L131 LiptonReduction]: Checked pairs total: 2135 [2022-04-18 19:13:47,813 INFO L133 LiptonReduction]: Total number of compositions: 137 [2022-04-18 19:13:47,821 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 24 transitions, 53 flow [2022-04-18 19:13:47,835 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 60 states have (on average 2.65) internal successors, (159), 86 states have internal predecessors, (159), 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 19:13:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 60 states have (on average 2.65) internal successors, (159), 86 states have internal predecessors, (159), 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 19:13:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:13:47,839 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:13:47,840 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:13:47,840 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-04-18 19:13:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:13:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash 16893652, now seen corresponding path program 1 times [2022-04-18 19:13:47,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:13:47,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963333758] [2022-04-18 19:13:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:13:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:13:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:13:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:13:47,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:13:47,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963333758] [2022-04-18 19:13:47,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963333758] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:13:47,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:13:47,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:13:47,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279810133] [2022-04-18 19:13:47,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:13:48,001 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:13:48,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:13:48,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:13:48,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:13:48,016 INFO L87 Difference]: Start difference. First operand has 87 states, 60 states have (on average 2.65) internal successors, (159), 86 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 19:13:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:13:48,043 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2022-04-18 19:13:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:13:48,045 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 19:13:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:13:48,050 INFO L225 Difference]: With dead ends: 19 [2022-04-18 19:13:48,051 INFO L226 Difference]: Without dead ends: 19 [2022-04-18 19:13:48,051 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:13:48,053 INFO L913 BasicCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:13:48,054 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:13:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-18 19:13:48,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-18 19:13:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:13:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2022-04-18 19:13:48,078 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 4 [2022-04-18 19:13:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:13:48,078 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2022-04-18 19:13:48,078 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 19:13:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2022-04-18 19:13:48,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:13:48,079 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:13:48,080 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 19:13:48,080 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:13:48,083 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2022-04-18 19:13:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:13:48,086 INFO L85 PathProgramCache]: Analyzing trace with hash -945121454, now seen corresponding path program 1 times [2022-04-18 19:13:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:13:48,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929006024] [2022-04-18 19:13:48,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:13:48,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:13:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:13:48,117 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:13:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:13:48,147 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:13:48,147 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:13:48,148 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2022-04-18 19:13:48,149 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-04-18 19:13:48,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-04-18 19:13:48,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-04-18 19:13:48,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-04-18 19:13:48,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-04-18 19:13:48,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-04-18 19:13:48,150 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-04-18 19:13:48,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-04-18 19:13:48,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-04-18 19:13:48,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-04-18 19:13:48,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-04-18 19:13:48,151 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-04-18 19:13:48,152 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-04-18 19:13:48,152 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-04-18 19:13:48,152 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-04-18 19:13:48,152 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-04-18 19:13:48,152 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-04-18 19:13:48,152 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-04-18 19:13:48,153 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-04-18 19:13:48,153 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2022-04-18 19:13:48,153 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-04-18 19:13:48,153 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-04-18 19:13:48,153 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-04-18 19:13:48,153 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-04-18 19:13:48,154 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-04-18 19:13:48,154 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-04-18 19:13:48,154 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:13:48,156 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:13:48,157 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:13:48,157 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:13:48,175 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:13:48,176 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:13:48,177 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=FINITE_AUTOMATA, 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 19:13:48,177 INFO L341 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-04-18 19:13:48,179 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:13:48,179 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 196 transitions, 404 flow [2022-04-18 19:13:48,180 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 196 transitions, 404 flow [2022-04-18 19:13:48,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 196 transitions, 404 flow [2022-04-18 19:13:48,213 INFO L129 PetriNetUnfolder]: 15/220 cut-off events. [2022-04-18 19:13:48,217 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:13:48,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 220 events. 15/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 456 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2022-04-18 19:13:48,231 INFO L116 LiptonReduction]: Number of co-enabled transitions 18204 [2022-04-18 19:14:11,053 WARN L232 SmtUtils]: Spent 22.23s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:14:48,819 WARN L232 SmtUtils]: Spent 37.77s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:15:28,917 WARN L232 SmtUtils]: Spent 40.10s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:16:00,145 WARN L232 SmtUtils]: Spent 31.23s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:16:22,531 WARN L232 SmtUtils]: Spent 22.32s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:16:49,090 WARN L232 SmtUtils]: Spent 26.55s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:17:04,737 WARN L232 SmtUtils]: Spent 15.65s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:17:33,709 WARN L232 SmtUtils]: Spent 28.97s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:18:13,925 WARN L232 SmtUtils]: Spent 39.76s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) Killed by 15