./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-10.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/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-10.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10d5067d95273951a014725afb4753c98c29896d9675321f4fa3b00f339e7930 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:52:59,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:52:59,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:52:59,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:52:59,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:52:59,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:52:59,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:52:59,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:52:59,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:52:59,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:52:59,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:52:59,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:52:59,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:52:59,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:52:59,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:52:59,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:52:59,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:52:59,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:52:59,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:52:59,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:52:59,197 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:52:59,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:52:59,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:52:59,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:52:59,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:52:59,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:52:59,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:52:59,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:52:59,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:52:59,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:52:59,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:52:59,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:52:59,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:52:59,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:52:59,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:52:59,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:52:59,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:52:59,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:52:59,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:52:59,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:52:59,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:52:59,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:52:59,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:52:59,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:52:59,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:52:59,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:52:59,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:52:59,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:52:59,233 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:52:59,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:52:59,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:52:59,234 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:52:59,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:52:59,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:52:59,235 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:52:59,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:52:59,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:52:59,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:52:59,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:52:59,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:52:59,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:52:59,236 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:52:59,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:52:59,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:52:59,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:52:59,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:52:59,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:52:59,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:52:59,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:52:59,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:52:59,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:52:59,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:52:59,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:52:59,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:52:59,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:52:59,240 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:52:59,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:52:59,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:52:59,241 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10d5067d95273951a014725afb4753c98c29896d9675321f4fa3b00f339e7930 [2022-04-18 15:52:59,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:52:59,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:52:59,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:52:59,467 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:52:59,468 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:52:59,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-10.i [2022-04-18 15:52:59,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4193da1c1/095fcad1a3644a0c815d11036276df7d/FLAGf5eed9336 [2022-04-18 15:52:59,957 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:52:59,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_bad-10.i [2022-04-18 15:52:59,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4193da1c1/095fcad1a3644a0c815d11036276df7d/FLAGf5eed9336 [2022-04-18 15:53:00,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4193da1c1/095fcad1a3644a0c815d11036276df7d [2022-04-18 15:53:00,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:53:00,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:53:00,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:53:00,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:53:00,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:53:00,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@476e40e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00, skipping insertion in model container [2022-04-18 15:53:00,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:53:00,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:53:00,741 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-deagle/reorder_c11_bad-10.i[30190,30203] [2022-04-18 15:53:00,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:53:00,773 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:53:00,828 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-deagle/reorder_c11_bad-10.i[30190,30203] [2022-04-18 15:53:00,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:53:00,869 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:53:00,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00 WrapperNode [2022-04-18 15:53:00,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:53:00,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:53:00,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:53:00,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:53:00,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,937 INFO L137 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 137 [2022-04-18 15:53:00,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:53:00,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:53:00,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:53:00,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:53:00,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:53:00,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:53:00,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:53:00,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:53:00,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (1/1) ... [2022-04-18 15:53:00,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:53:01,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:01,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 15:53:01,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 15:53:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:53:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-04-18 15:53:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-04-18 15:53:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:53:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 15:53:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:53:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:53:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:53:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-04-18 15:53:01,051 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-04-18 15:53:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:53:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 15:53:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:53:01,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:53:01,053 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 15:53:01,142 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:53:01,144 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:53:01,457 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:53:01,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:53:01,478 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-18 15:53:01,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:53:01 BoogieIcfgContainer [2022-04-18 15:53:01,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:53:01,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:53:01,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:53:01,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:53:01,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:53:00" (1/3) ... [2022-04-18 15:53:01,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589e8423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:53:01, skipping insertion in model container [2022-04-18 15:53:01,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:00" (2/3) ... [2022-04-18 15:53:01,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@589e8423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:53:01, skipping insertion in model container [2022-04-18 15:53:01,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:53:01" (3/3) ... [2022-04-18 15:53:01,488 INFO L111 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-10.i [2022-04-18 15:53:01,492 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:53:01,492 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:53:01,492 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-04-18 15:53:01,493 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:53:01,585 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 15:53:01,631 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:53:01,639 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=PETRI_NET, 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 15:53:01,639 INFO L341 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-04-18 15:53:01,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 203 places, 210 transitions, 442 flow [2022-04-18 15:53:01,840 INFO L129 PetriNetUnfolder]: 30/521 cut-off events. [2022-04-18 15:53:01,841 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 15:53:01,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 521 events. 30/521 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2106 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 247. Up to 8 conditions per place. [2022-04-18 15:53:01,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 210 transitions, 442 flow [2022-04-18 15:53:01,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 210 transitions, 442 flow [2022-04-18 15:53:01,862 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2022-04-18 15:53:01,862 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:53:01,862 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:01,862 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:01,863 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:01,869 INFO L85 PathProgramCache]: Analyzing trace with hash 534724535, now seen corresponding path program 1 times [2022-04-18 15:53:01,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:01,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102328147] [2022-04-18 15:53:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:02,090 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 15:53:02,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:02,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102328147] [2022-04-18 15:53:02,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102328147] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:02,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:02,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:02,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362046197] [2022-04-18 15:53:02,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:02,101 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:02,125 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 210 [2022-04-18 15:53:02,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 210 transitions, 442 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 15:53:02,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:02,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 210 [2022-04-18 15:53:02,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:02,439 INFO L129 PetriNetUnfolder]: 192/1120 cut-off events. [2022-04-18 15:53:02,440 INFO L130 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-04-18 15:53:02,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 1120 events. 192/1120 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6268 event pairs, 168 based on Foata normal form. 114/1047 useless extension candidates. Maximal degree in co-relation 1286. Up to 521 conditions per place. [2022-04-18 15:53:02,454 INFO L132 encePairwiseOnDemand]: 200/210 looper letters, 68 selfloop transitions, 2 changer transitions 0/201 dead transitions. [2022-04-18 15:53:02,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 201 transitions, 564 flow [2022-04-18 15:53:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-04-18 15:53:02,474 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2022-04-18 15:53:02,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-04-18 15:53:02,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-04-18 15:53:02,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:02,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-04-18 15:53:02,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 15:53:02,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:02,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:02,499 INFO L186 Difference]: Start difference. First operand has 203 places, 210 transitions, 442 flow. Second operand 3 states and 471 transitions. [2022-04-18 15:53:02,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 201 transitions, 564 flow [2022-04-18 15:53:02,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 201 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:53:02,510 INFO L242 Difference]: Finished difference. Result has 201 places, 201 transitions, 428 flow [2022-04-18 15:53:02,513 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=201, PETRI_TRANSITIONS=201} [2022-04-18 15:53:02,520 INFO L335 CegarLoopForPetriNet]: 203 programPoint places, -2 predicate places. [2022-04-18 15:53:02,521 INFO L478 AbstractCegarLoop]: Abstraction has has 201 places, 201 transitions, 428 flow [2022-04-18 15:53:02,522 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 15:53:02,522 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:02,522 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:02,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:53:02,523 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:02,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:02,524 INFO L85 PathProgramCache]: Analyzing trace with hash -54656402, now seen corresponding path program 1 times [2022-04-18 15:53:02,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:02,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180522315] [2022-04-18 15:53:02,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:02,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:02,600 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 15:53:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:02,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180522315] [2022-04-18 15:53:02,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180522315] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:02,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:02,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59231696] [2022-04-18 15:53:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:02,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:02,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:02,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:02,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:02,613 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 210 [2022-04-18 15:53:02,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 201 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 15:53:02,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:02,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 210 [2022-04-18 15:53:02,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:02,799 INFO L129 PetriNetUnfolder]: 156/1011 cut-off events. [2022-04-18 15:53:02,799 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-04-18 15:53:02,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 1011 events. 156/1011 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5486 event pairs, 78 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 1422. Up to 243 conditions per place. [2022-04-18 15:53:02,810 INFO L132 encePairwiseOnDemand]: 187/210 looper letters, 46 selfloop transitions, 11 changer transitions 0/191 dead transitions. [2022-04-18 15:53:02,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 191 transitions, 522 flow [2022-04-18 15:53:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-04-18 15:53:02,813 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2022-04-18 15:53:02,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-04-18 15:53:02,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-04-18 15:53:02,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:02,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-04-18 15:53:02,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 15:53:02,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:02,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:02,817 INFO L186 Difference]: Start difference. First operand has 201 places, 201 transitions, 428 flow. Second operand 3 states and 471 transitions. [2022-04-18 15:53:02,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 191 transitions, 522 flow [2022-04-18 15:53:02,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 191 transitions, 518 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:02,823 INFO L242 Difference]: Finished difference. Result has 189 places, 189 transitions, 422 flow [2022-04-18 15:53:02,823 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=189, PETRI_TRANSITIONS=189} [2022-04-18 15:53:02,824 INFO L335 CegarLoopForPetriNet]: 203 programPoint places, -14 predicate places. [2022-04-18 15:53:02,824 INFO L478 AbstractCegarLoop]: Abstraction has has 189 places, 189 transitions, 422 flow [2022-04-18 15:53:02,825 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 15:53:02,825 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:02,825 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:02,826 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:53:02,826 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2045341073, now seen corresponding path program 1 times [2022-04-18 15:53:02,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:02,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152014288] [2022-04-18 15:53:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:02,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:02,871 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 15:53:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152014288] [2022-04-18 15:53:02,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152014288] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:02,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:02,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:53:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060469547] [2022-04-18 15:53:02,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:02,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:02,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:02,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:02,875 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 210 [2022-04-18 15:53:02,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 189 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 15:53:02,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:02,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 210 [2022-04-18 15:53:02,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:03,042 INFO L129 PetriNetUnfolder]: 99/707 cut-off events. [2022-04-18 15:53:03,043 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 15:53:03,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 707 events. 99/707 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2627 event pairs, 52 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 819. Up to 160 conditions per place. [2022-04-18 15:53:03,049 INFO L132 encePairwiseOnDemand]: 198/210 looper letters, 61 selfloop transitions, 8 changer transitions 9/215 dead transitions. [2022-04-18 15:53:03,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 215 transitions, 622 flow [2022-04-18 15:53:03,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:03,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:03,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2022-04-18 15:53:03,052 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-04-18 15:53:03,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2022-04-18 15:53:03,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2022-04-18 15:53:03,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:03,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2022-04-18 15:53:03,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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 15:53:03,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:03,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:03,056 INFO L186 Difference]: Start difference. First operand has 189 places, 189 transitions, 422 flow. Second operand 3 states and 546 transitions. [2022-04-18 15:53:03,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 215 transitions, 622 flow [2022-04-18 15:53:03,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 215 transitions, 600 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:03,062 INFO L242 Difference]: Finished difference. Result has 190 places, 182 transitions, 418 flow [2022-04-18 15:53:03,063 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=190, PETRI_TRANSITIONS=182} [2022-04-18 15:53:03,063 INFO L335 CegarLoopForPetriNet]: 203 programPoint places, -13 predicate places. [2022-04-18 15:53:03,064 INFO L478 AbstractCegarLoop]: Abstraction has has 190 places, 182 transitions, 418 flow [2022-04-18 15:53:03,064 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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 15:53:03,064 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:03,064 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:03,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:53:03,065 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:03,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1824961802, now seen corresponding path program 1 times [2022-04-18 15:53:03,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:03,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242611624] [2022-04-18 15:53:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:03,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:03,106 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 15:53:03,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:03,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242611624] [2022-04-18 15:53:03,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242611624] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:03,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:03,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:03,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186021725] [2022-04-18 15:53:03,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:03,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:03,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:03,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:03,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:03,121 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 210 [2022-04-18 15:53:03,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 182 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 15:53:03,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:03,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 210 [2022-04-18 15:53:03,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:03,288 INFO L129 PetriNetUnfolder]: 113/714 cut-off events. [2022-04-18 15:53:03,289 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-04-18 15:53:03,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 714 events. 113/714 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2633 event pairs, 99 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 869. Up to 302 conditions per place. [2022-04-18 15:53:03,294 INFO L132 encePairwiseOnDemand]: 207/210 looper letters, 57 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2022-04-18 15:53:03,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 183 transitions, 538 flow [2022-04-18 15:53:03,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2022-04-18 15:53:03,297 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.719047619047619 [2022-04-18 15:53:03,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2022-04-18 15:53:03,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2022-04-18 15:53:03,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:03,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2022-04-18 15:53:03,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 15:53:03,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:03,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:03,302 INFO L186 Difference]: Start difference. First operand has 190 places, 182 transitions, 418 flow. Second operand 3 states and 453 transitions. [2022-04-18 15:53:03,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 183 transitions, 538 flow [2022-04-18 15:53:03,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 183 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:53:03,306 INFO L242 Difference]: Finished difference. Result has 182 places, 181 transitions, 412 flow [2022-04-18 15:53:03,307 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2022-04-18 15:53:03,308 INFO L335 CegarLoopForPetriNet]: 203 programPoint places, -21 predicate places. [2022-04-18 15:53:03,308 INFO L478 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 412 flow [2022-04-18 15:53:03,308 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 15:53:03,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:03,309 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:03,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:53:03,309 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash -474470198, now seen corresponding path program 1 times [2022-04-18 15:53:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:03,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464947625] [2022-04-18 15:53:03,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:03,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:03,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:03,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464947625] [2022-04-18 15:53:03,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464947625] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:53:03,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016227978] [2022-04-18 15:53:03,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:03,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:03,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:03,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:53:03,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 15:53:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:03,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:53:03,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:53:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-18 15:53:03,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:53:03,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016227978] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:03,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:53:03,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:53:03,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394942343] [2022-04-18 15:53:03,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:03,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:03,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:03,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:03,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:53:03,605 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 210 [2022-04-18 15:53:03,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 15:53:03,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:03,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 210 [2022-04-18 15:53:03,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:03,756 INFO L129 PetriNetUnfolder]: 111/709 cut-off events. [2022-04-18 15:53:03,757 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-04-18 15:53:03,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 709 events. 111/709 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2604 event pairs, 97 based on Foata normal form. 0/653 useless extension candidates. Maximal degree in co-relation 856. Up to 297 conditions per place. [2022-04-18 15:53:03,762 INFO L132 encePairwiseOnDemand]: 207/210 looper letters, 56 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2022-04-18 15:53:03,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 182 transitions, 530 flow [2022-04-18 15:53:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2022-04-18 15:53:03,764 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7174603174603175 [2022-04-18 15:53:03,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2022-04-18 15:53:03,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2022-04-18 15:53:03,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:03,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2022-04-18 15:53:03,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 15:53:03,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:03,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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 15:53:03,768 INFO L186 Difference]: Start difference. First operand has 182 places, 181 transitions, 412 flow. Second operand 3 states and 452 transitions. [2022-04-18 15:53:03,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 182 transitions, 530 flow [2022-04-18 15:53:03,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 182 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:03,773 INFO L242 Difference]: Finished difference. Result has 181 places, 180 transitions, 410 flow [2022-04-18 15:53:03,773 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=410, PETRI_PLACES=181, PETRI_TRANSITIONS=180} [2022-04-18 15:53:03,774 INFO L335 CegarLoopForPetriNet]: 203 programPoint places, -22 predicate places. [2022-04-18 15:53:03,774 INFO L478 AbstractCegarLoop]: Abstraction has has 181 places, 180 transitions, 410 flow [2022-04-18 15:53:03,774 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 15:53:03,775 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:03,775 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:03,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-18 15:53:03,999 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:03,999 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:04,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash -252428761, now seen corresponding path program 1 times [2022-04-18 15:53:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:04,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776730505] [2022-04-18 15:53:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:53:04,025 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:53:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:53:04,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:53:04,068 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:53:04,069 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-04-18 15:53:04,070 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-04-18 15:53:04,070 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-04-18 15:53:04,071 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-04-18 15:53:04,071 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-04-18 15:53:04,071 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-04-18 15:53:04,071 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-04-18 15:53:04,072 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-04-18 15:53:04,072 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-04-18 15:53:04,072 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-04-18 15:53:04,076 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-04-18 15:53:04,076 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-04-18 15:53:04,077 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-04-18 15:53:04,077 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-04-18 15:53:04,077 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-04-18 15:53:04,077 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-04-18 15:53:04,077 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-04-18 15:53:04,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-04-18 15:53:04,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-04-18 15:53:04,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-04-18 15:53:04,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-04-18 15:53:04,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-04-18 15:53:04,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-04-18 15:53:04,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-04-18 15:53:04,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-04-18 15:53:04,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-04-18 15:53:04,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-04-18 15:53:04,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-04-18 15:53:04,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-04-18 15:53:04,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 36 remaining) [2022-04-18 15:53:04,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-04-18 15:53:04,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-04-18 15:53:04,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-04-18 15:53:04,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-04-18 15:53:04,081 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-04-18 15:53:04,081 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-04-18 15:53:04,081 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:53:04,085 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-18 15:53:04,087 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:53:04,087 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:53:04,117 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-04-18 15:53:04,119 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:53:04,120 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=PETRI_NET, 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 15:53:04,120 INFO L341 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-04-18 15:53:04,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 260 transitions, 568 flow [2022-04-18 15:53:04,328 INFO L129 PetriNetUnfolder]: 125/1739 cut-off events. [2022-04-18 15:53:04,328 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-04-18 15:53:04,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 1739 events. 125/1739 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 10323 event pairs, 2 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 980. Up to 32 conditions per place. [2022-04-18 15:53:04,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 260 transitions, 568 flow [2022-04-18 15:53:04,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 260 transitions, 568 flow [2022-04-18 15:53:04,358 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2022-04-18 15:53:04,358 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:53:04,359 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:04,359 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:04,359 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1775485511, now seen corresponding path program 1 times [2022-04-18 15:53:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:04,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927735834] [2022-04-18 15:53:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:04,401 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 15:53:04,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:04,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927735834] [2022-04-18 15:53:04,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927735834] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:04,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:04,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:04,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930621805] [2022-04-18 15:53:04,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:04,406 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:04,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:04,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:04,411 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 260 [2022-04-18 15:53:04,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 568 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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 15:53:04,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:04,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 260 [2022-04-18 15:53:04,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:06,185 INFO L129 PetriNetUnfolder]: 2687/8550 cut-off events. [2022-04-18 15:53:06,185 INFO L130 PetriNetUnfolder]: For 684/720 co-relation queries the response was YES. [2022-04-18 15:53:06,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 8550 events. 2687/8550 cut-off events. For 684/720 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 68390 event pairs, 2481 based on Foata normal form. 2081/9444 useless extension candidates. Maximal degree in co-relation 7299. Up to 5052 conditions per place. [2022-04-18 15:53:06,402 INFO L132 encePairwiseOnDemand]: 247/260 looper letters, 76 selfloop transitions, 2 changer transitions 0/247 dead transitions. [2022-04-18 15:53:06,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 247 transitions, 698 flow [2022-04-18 15:53:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2022-04-18 15:53:06,405 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.764102564102564 [2022-04-18 15:53:06,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2022-04-18 15:53:06,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2022-04-18 15:53:06,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:06,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2022-04-18 15:53:06,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 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 15:53:06,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:06,410 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:06,410 INFO L186 Difference]: Start difference. First operand has 249 places, 260 transitions, 568 flow. Second operand 3 states and 596 transitions. [2022-04-18 15:53:06,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 247 transitions, 698 flow [2022-04-18 15:53:06,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 247 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:53:06,418 INFO L242 Difference]: Finished difference. Result has 244 places, 247 transitions, 546 flow [2022-04-18 15:53:06,419 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=244, PETRI_TRANSITIONS=247} [2022-04-18 15:53:06,420 INFO L335 CegarLoopForPetriNet]: 249 programPoint places, -5 predicate places. [2022-04-18 15:53:06,421 INFO L478 AbstractCegarLoop]: Abstraction has has 244 places, 247 transitions, 546 flow [2022-04-18 15:53:06,422 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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 15:53:06,422 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:06,422 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:06,422 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:53:06,423 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash -965929490, now seen corresponding path program 1 times [2022-04-18 15:53:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:06,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292438258] [2022-04-18 15:53:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:06,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:06,464 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 15:53:06,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:06,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292438258] [2022-04-18 15:53:06,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292438258] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:06,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:06,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:06,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634087580] [2022-04-18 15:53:06,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:06,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:06,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:06,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:06,469 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 260 [2022-04-18 15:53:06,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 247 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 15:53:06,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:06,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 260 [2022-04-18 15:53:06,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:07,663 INFO L129 PetriNetUnfolder]: 2173/7264 cut-off events. [2022-04-18 15:53:07,663 INFO L130 PetriNetUnfolder]: For 685/721 co-relation queries the response was YES. [2022-04-18 15:53:07,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11565 conditions, 7264 events. 2173/7264 cut-off events. For 685/721 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 56920 event pairs, 1169 based on Foata normal form. 0/6585 useless extension candidates. Maximal degree in co-relation 11528. Up to 2412 conditions per place. [2022-04-18 15:53:07,801 INFO L132 encePairwiseOnDemand]: 237/260 looper letters, 56 selfloop transitions, 11 changer transitions 0/239 dead transitions. [2022-04-18 15:53:07,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 239 transitions, 664 flow [2022-04-18 15:53:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2022-04-18 15:53:07,804 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2022-04-18 15:53:07,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2022-04-18 15:53:07,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2022-04-18 15:53:07,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:07,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2022-04-18 15:53:07,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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 15:53:07,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:07,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:07,809 INFO L186 Difference]: Start difference. First operand has 244 places, 247 transitions, 546 flow. Second operand 3 states and 595 transitions. [2022-04-18 15:53:07,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 239 transitions, 664 flow [2022-04-18 15:53:07,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 239 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:07,815 INFO L242 Difference]: Finished difference. Result has 232 places, 235 transitions, 540 flow [2022-04-18 15:53:07,816 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=232, PETRI_TRANSITIONS=235} [2022-04-18 15:53:07,817 INFO L335 CegarLoopForPetriNet]: 249 programPoint places, -17 predicate places. [2022-04-18 15:53:07,819 INFO L478 AbstractCegarLoop]: Abstraction has has 232 places, 235 transitions, 540 flow [2022-04-18 15:53:07,819 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 15:53:07,820 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:07,820 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:07,820 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:53:07,820 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:07,821 INFO L85 PathProgramCache]: Analyzing trace with hash -957051023, now seen corresponding path program 1 times [2022-04-18 15:53:07,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:07,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419334240] [2022-04-18 15:53:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:07,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:07,872 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 15:53:07,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:07,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419334240] [2022-04-18 15:53:07,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419334240] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:07,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:07,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:53:07,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687059941] [2022-04-18 15:53:07,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:07,875 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:07,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:07,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:07,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:07,877 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 260 [2022-04-18 15:53:07,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 235 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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 15:53:07,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:07,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 260 [2022-04-18 15:53:07,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:09,203 INFO L129 PetriNetUnfolder]: 2174/7894 cut-off events. [2022-04-18 15:53:09,204 INFO L130 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2022-04-18 15:53:09,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12828 conditions, 7894 events. 2174/7894 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 63293 event pairs, 994 based on Foata normal form. 0/7194 useless extension candidates. Maximal degree in co-relation 5478. Up to 2249 conditions per place. [2022-04-18 15:53:09,317 INFO L132 encePairwiseOnDemand]: 248/260 looper letters, 85 selfloop transitions, 8 changer transitions 0/275 dead transitions. [2022-04-18 15:53:09,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 275 transitions, 830 flow [2022-04-18 15:53:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-04-18 15:53:09,320 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8743589743589744 [2022-04-18 15:53:09,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-04-18 15:53:09,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-04-18 15:53:09,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:09,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-04-18 15:53:09,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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 15:53:09,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:09,324 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:09,325 INFO L186 Difference]: Start difference. First operand has 232 places, 235 transitions, 540 flow. Second operand 3 states and 682 transitions. [2022-04-18 15:53:09,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 275 transitions, 830 flow [2022-04-18 15:53:09,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 275 transitions, 808 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:09,332 INFO L242 Difference]: Finished difference. Result has 233 places, 239 transitions, 566 flow [2022-04-18 15:53:09,333 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=233, PETRI_TRANSITIONS=239} [2022-04-18 15:53:09,334 INFO L335 CegarLoopForPetriNet]: 249 programPoint places, -16 predicate places. [2022-04-18 15:53:09,334 INFO L478 AbstractCegarLoop]: Abstraction has has 233 places, 239 transitions, 566 flow [2022-04-18 15:53:09,334 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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 15:53:09,334 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:09,335 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:09,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:53:09,335 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:09,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash 26835934, now seen corresponding path program 1 times [2022-04-18 15:53:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:09,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911322738] [2022-04-18 15:53:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:09,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:09,359 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 15:53:09,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:09,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911322738] [2022-04-18 15:53:09,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911322738] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:09,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:09,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:09,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412043186] [2022-04-18 15:53:09,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:09,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:09,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:09,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:09,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:09,363 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 260 [2022-04-18 15:53:09,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 239 transitions, 566 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 15:53:09,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:09,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 260 [2022-04-18 15:53:09,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:10,744 INFO L129 PetriNetUnfolder]: 2124/7842 cut-off events. [2022-04-18 15:53:10,744 INFO L130 PetriNetUnfolder]: For 740/740 co-relation queries the response was YES. [2022-04-18 15:53:10,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12608 conditions, 7842 events. 2124/7842 cut-off events. For 740/740 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 63013 event pairs, 1928 based on Foata normal form. 0/7271 useless extension candidates. Maximal degree in co-relation 5609. Up to 3941 conditions per place. [2022-04-18 15:53:10,855 INFO L132 encePairwiseOnDemand]: 257/260 looper letters, 67 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-04-18 15:53:10,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 242 transitions, 710 flow [2022-04-18 15:53:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2022-04-18 15:53:10,858 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7397435897435898 [2022-04-18 15:53:10,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2022-04-18 15:53:10,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2022-04-18 15:53:10,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:10,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2022-04-18 15:53:10,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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 15:53:10,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:10,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:10,862 INFO L186 Difference]: Start difference. First operand has 233 places, 239 transitions, 566 flow. Second operand 3 states and 577 transitions. [2022-04-18 15:53:10,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 242 transitions, 710 flow [2022-04-18 15:53:10,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 242 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:53:10,869 INFO L242 Difference]: Finished difference. Result has 233 places, 238 transitions, 560 flow [2022-04-18 15:53:10,869 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=560, PETRI_PLACES=233, PETRI_TRANSITIONS=238} [2022-04-18 15:53:10,870 INFO L335 CegarLoopForPetriNet]: 249 programPoint places, -16 predicate places. [2022-04-18 15:53:10,870 INFO L478 AbstractCegarLoop]: Abstraction has has 233 places, 238 transitions, 560 flow [2022-04-18 15:53:10,871 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 15:53:10,871 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:10,871 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:10,871 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:53:10,872 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash -363605896, now seen corresponding path program 1 times [2022-04-18 15:53:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:10,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184116853] [2022-04-18 15:53:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:10,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:10,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:10,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184116853] [2022-04-18 15:53:10,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184116853] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:53:10,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277144716] [2022-04-18 15:53:10,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:10,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:10,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:10,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:53:10,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 15:53:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:10,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:53:10,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:53:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-18 15:53:11,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:53:11,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277144716] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:11,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:53:11,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:53:11,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390020971] [2022-04-18 15:53:11,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:11,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:11,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:11,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:11,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:53:11,087 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 260 [2022-04-18 15:53:11,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 238 transitions, 560 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 15:53:11,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:11,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 260 [2022-04-18 15:53:11,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:12,339 INFO L129 PetriNetUnfolder]: 2110/7804 cut-off events. [2022-04-18 15:53:12,339 INFO L130 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-04-18 15:53:12,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12469 conditions, 7804 events. 2110/7804 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 62805 event pairs, 1914 based on Foata normal form. 0/7245 useless extension candidates. Maximal degree in co-relation 5521. Up to 3915 conditions per place. [2022-04-18 15:53:12,424 INFO L132 encePairwiseOnDemand]: 257/260 looper letters, 66 selfloop transitions, 2 changer transitions 0/241 dead transitions. [2022-04-18 15:53:12,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 241 transitions, 702 flow [2022-04-18 15:53:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:12,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2022-04-18 15:53:12,427 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2022-04-18 15:53:12,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2022-04-18 15:53:12,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2022-04-18 15:53:12,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:12,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2022-04-18 15:53:12,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 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 15:53:12,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:12,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:12,432 INFO L186 Difference]: Start difference. First operand has 233 places, 238 transitions, 560 flow. Second operand 3 states and 576 transitions. [2022-04-18 15:53:12,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 241 transitions, 702 flow [2022-04-18 15:53:12,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 241 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:12,438 INFO L242 Difference]: Finished difference. Result has 232 places, 237 transitions, 558 flow [2022-04-18 15:53:12,439 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=232, PETRI_TRANSITIONS=237} [2022-04-18 15:53:12,440 INFO L335 CegarLoopForPetriNet]: 249 programPoint places, -17 predicate places. [2022-04-18 15:53:12,440 INFO L478 AbstractCegarLoop]: Abstraction has has 232 places, 237 transitions, 558 flow [2022-04-18 15:53:12,440 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 15:53:12,440 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:12,441 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:12,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-18 15:53:12,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-18 15:53:12,664 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -723349642, now seen corresponding path program 1 times [2022-04-18 15:53:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:12,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526122749] [2022-04-18 15:53:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:12,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:12,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:12,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526122749] [2022-04-18 15:53:12,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526122749] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:53:12,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749079039] [2022-04-18 15:53:12,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:12,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:12,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:12,736 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:53:12,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 15:53:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:12,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:53:12,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:53:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-18 15:53:12,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:53:12,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749079039] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:12,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:53:12,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:53:12,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086037094] [2022-04-18 15:53:12,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:12,894 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:12,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:12,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:12,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:53:12,896 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 260 [2022-04-18 15:53:12,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 237 transitions, 558 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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 15:53:12,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:12,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 260 [2022-04-18 15:53:12,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:17,322 INFO L129 PetriNetUnfolder]: 6387/40069 cut-off events. [2022-04-18 15:53:17,322 INFO L130 PetriNetUnfolder]: For 8926/85685 co-relation queries the response was YES. [2022-04-18 15:53:17,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53036 conditions, 40069 events. 6387/40069 cut-off events. For 8926/85685 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 571096 event pairs, 1961 based on Foata normal form. 69/33888 useless extension candidates. Maximal degree in co-relation 45284. Up to 4468 conditions per place. [2022-04-18 15:53:17,681 INFO L132 encePairwiseOnDemand]: 246/260 looper letters, 39 selfloop transitions, 10 changer transitions 0/258 dead transitions. [2022-04-18 15:53:17,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 258 transitions, 727 flow [2022-04-18 15:53:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:17,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2022-04-18 15:53:17,683 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9141025641025641 [2022-04-18 15:53:17,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2022-04-18 15:53:17,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2022-04-18 15:53:17,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:17,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2022-04-18 15:53:17,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 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 15:53:17,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:17,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 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 15:53:17,687 INFO L186 Difference]: Start difference. First operand has 232 places, 237 transitions, 558 flow. Second operand 3 states and 713 transitions. [2022-04-18 15:53:17,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 258 transitions, 727 flow [2022-04-18 15:53:17,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 258 transitions, 723 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:17,716 INFO L242 Difference]: Finished difference. Result has 234 places, 247 transitions, 642 flow [2022-04-18 15:53:17,717 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=642, PETRI_PLACES=234, PETRI_TRANSITIONS=247} [2022-04-18 15:53:17,718 INFO L335 CegarLoopForPetriNet]: 249 programPoint places, -15 predicate places. [2022-04-18 15:53:17,718 INFO L478 AbstractCegarLoop]: Abstraction has has 234 places, 247 transitions, 642 flow [2022-04-18 15:53:17,718 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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 15:53:17,718 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:17,719 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:17,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-18 15:53:17,938 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:17,939 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:17,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:17,940 INFO L85 PathProgramCache]: Analyzing trace with hash 645704468, now seen corresponding path program 1 times [2022-04-18 15:53:17,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:17,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2418570] [2022-04-18 15:53:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:17,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:18,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:18,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:18,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2418570] [2022-04-18 15:53:18,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2418570] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:53:18,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22193015] [2022-04-18 15:53:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:18,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:18,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:18,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:53:18,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-18 15:53:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:18,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:53:18,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:53:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:18,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:53:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:18,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22193015] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:53:18,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:53:18,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:53:18,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499431889] [2022-04-18 15:53:18,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:53:18,376 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:53:18,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:53:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:53:18,379 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 260 [2022-04-18 15:53:18,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 247 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 195.9) internal successors, (1959), 10 states have internal predecessors, (1959), 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 15:53:18,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:18,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 260 [2022-04-18 15:53:18,381 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:18,472 INFO L129 PetriNetUnfolder]: 76/339 cut-off events. [2022-04-18 15:53:18,472 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-04-18 15:53:18,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 339 events. 76/339 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1199 event pairs, 0 based on Foata normal form. 12/343 useless extension candidates. Maximal degree in co-relation 576. Up to 63 conditions per place. [2022-04-18 15:53:18,473 INFO L132 encePairwiseOnDemand]: 255/260 looper letters, 32 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2022-04-18 15:53:18,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 284 flow [2022-04-18 15:53:18,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:53:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:53:18,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1778 transitions. [2022-04-18 15:53:18,478 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7598290598290598 [2022-04-18 15:53:18,478 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1778 transitions. [2022-04-18 15:53:18,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1778 transitions. [2022-04-18 15:53:18,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:18,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1778 transitions. [2022-04-18 15:53:18,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 197.55555555555554) internal successors, (1778), 9 states have internal predecessors, (1778), 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 15:53:18,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 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 15:53:18,624 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 260.0) internal successors, (2600), 10 states have internal predecessors, (2600), 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 15:53:18,624 INFO L186 Difference]: Start difference. First operand has 234 places, 247 transitions, 642 flow. Second operand 9 states and 1778 transitions. [2022-04-18 15:53:18,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 284 flow [2022-04-18 15:53:18,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:53:18,626 INFO L242 Difference]: Finished difference. Result has 77 places, 61 transitions, 156 flow [2022-04-18 15:53:18,627 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2022-04-18 15:53:18,629 INFO L335 CegarLoopForPetriNet]: 249 programPoint places, -172 predicate places. [2022-04-18 15:53:18,630 INFO L478 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 156 flow [2022-04-18 15:53:18,632 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 195.9) internal successors, (1959), 10 states have internal predecessors, (1959), 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 15:53:18,632 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:18,632 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:18,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-18 15:53:18,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:18,835 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 759265801, now seen corresponding path program 1 times [2022-04-18 15:53:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:18,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164431650] [2022-04-18 15:53:18,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:18,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:53:18,858 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:53:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:53:18,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:53:18,887 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:53:18,887 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2022-04-18 15:53:18,887 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2022-04-18 15:53:18,887 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2022-04-18 15:53:18,888 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2022-04-18 15:53:18,888 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2022-04-18 15:53:18,888 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2022-04-18 15:53:18,888 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2022-04-18 15:53:18,888 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2022-04-18 15:53:18,888 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2022-04-18 15:53:18,889 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2022-04-18 15:53:18,889 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2022-04-18 15:53:18,889 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2022-04-18 15:53:18,889 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2022-04-18 15:53:18,889 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2022-04-18 15:53:18,889 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2022-04-18 15:53:18,890 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2022-04-18 15:53:18,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2022-04-18 15:53:18,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2022-04-18 15:53:18,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2022-04-18 15:53:18,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2022-04-18 15:53:18,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2022-04-18 15:53:18,891 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2022-04-18 15:53:18,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2022-04-18 15:53:18,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2022-04-18 15:53:18,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2022-04-18 15:53:18,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2022-04-18 15:53:18,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2022-04-18 15:53:18,892 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2022-04-18 15:53:18,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2022-04-18 15:53:18,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 42 remaining) [2022-04-18 15:53:18,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2022-04-18 15:53:18,893 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2022-04-18 15:53:18,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2022-04-18 15:53:18,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2022-04-18 15:53:18,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2022-04-18 15:53:18,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2022-04-18 15:53:18,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2022-04-18 15:53:18,894 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2022-04-18 15:53:18,895 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2022-04-18 15:53:18,895 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2022-04-18 15:53:18,895 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2022-04-18 15:53:18,895 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2022-04-18 15:53:18,895 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 15:53:18,896 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:18,896 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:53:18,896 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:53:18,939 INFO L135 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-04-18 15:53:18,941 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:53:18,941 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=PETRI_NET, 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 15:53:18,941 INFO L341 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2022-04-18 15:53:18,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 295 places, 310 transitions, 698 flow [2022-04-18 15:53:19,807 INFO L129 PetriNetUnfolder]: 532/5843 cut-off events. [2022-04-18 15:53:19,807 INFO L130 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-04-18 15:53:19,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6294 conditions, 5843 events. 532/5843 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 47041 event pairs, 64 based on Foata normal form. 0/4654 useless extension candidates. Maximal degree in co-relation 3338. Up to 192 conditions per place. [2022-04-18 15:53:19,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 310 transitions, 698 flow [2022-04-18 15:53:19,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 310 transitions, 698 flow [2022-04-18 15:53:19,952 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2022-04-18 15:53:19,952 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:53:19,953 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:19,953 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:19,953 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 15:53:19,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:19,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1692627181, now seen corresponding path program 1 times [2022-04-18 15:53:19,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:19,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096926245] [2022-04-18 15:53:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:19,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:19,973 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 15:53:19,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:19,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096926245] [2022-04-18 15:53:19,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096926245] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:19,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:19,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:19,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273158018] [2022-04-18 15:53:19,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:19,974 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:19,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:19,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:19,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:19,976 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 310 [2022-04-18 15:53:19,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 310 transitions, 698 flow. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 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 15:53:19,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:19,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 310 [2022-04-18 15:53:19,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:32,417 INFO L129 PetriNetUnfolder]: 28496/68376 cut-off events. [2022-04-18 15:53:32,417 INFO L130 PetriNetUnfolder]: For 7595/7967 co-relation queries the response was YES. [2022-04-18 15:53:33,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116502 conditions, 68376 events. 28496/68376 cut-off events. For 7595/7967 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 680463 event pairs, 26638 based on Foata normal form. 24330/84813 useless extension candidates. Maximal degree in co-relation 61368. Up to 45367 conditions per place. [2022-04-18 15:53:34,263 INFO L132 encePairwiseOnDemand]: 294/310 looper letters, 84 selfloop transitions, 2 changer transitions 0/293 dead transitions. [2022-04-18 15:53:34,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 293 transitions, 836 flow [2022-04-18 15:53:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-04-18 15:53:34,267 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7752688172043011 [2022-04-18 15:53:34,267 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-04-18 15:53:34,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-04-18 15:53:34,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:34,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-04-18 15:53:34,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 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 15:53:34,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 15:53:34,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 15:53:34,271 INFO L186 Difference]: Start difference. First operand has 295 places, 310 transitions, 698 flow. Second operand 3 states and 721 transitions. [2022-04-18 15:53:34,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 293 transitions, 836 flow [2022-04-18 15:53:34,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 293 transitions, 836 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:53:34,280 INFO L242 Difference]: Finished difference. Result has 287 places, 293 transitions, 668 flow [2022-04-18 15:53:34,280 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=668, PETRI_PLACES=287, PETRI_TRANSITIONS=293} [2022-04-18 15:53:34,281 INFO L335 CegarLoopForPetriNet]: 295 programPoint places, -8 predicate places. [2022-04-18 15:53:34,281 INFO L478 AbstractCegarLoop]: Abstraction has has 287 places, 293 transitions, 668 flow [2022-04-18 15:53:34,281 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 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 15:53:34,281 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:34,281 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:34,281 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 15:53:34,281 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 15:53:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2141278446, now seen corresponding path program 1 times [2022-04-18 15:53:34,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:34,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749492588] [2022-04-18 15:53:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:34,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:34,295 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 15:53:34,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:34,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749492588] [2022-04-18 15:53:34,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749492588] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:34,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:34,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:34,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503452985] [2022-04-18 15:53:34,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:34,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:34,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:34,299 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 310 [2022-04-18 15:53:34,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 293 transitions, 668 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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 15:53:34,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:34,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 310 [2022-04-18 15:53:34,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:44,356 INFO L129 PetriNetUnfolder]: 23044/57595 cut-off events. [2022-04-18 15:53:44,356 INFO L130 PetriNetUnfolder]: For 7596/7968 co-relation queries the response was YES. [2022-04-18 15:53:45,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96500 conditions, 57595 events. 23044/57595 cut-off events. For 7596/7968 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 573644 event pairs, 12762 based on Foata normal form. 0/53279 useless extension candidates. Maximal degree in co-relation 96461. Up to 22195 conditions per place. [2022-04-18 15:53:45,938 INFO L132 encePairwiseOnDemand]: 287/310 looper letters, 66 selfloop transitions, 11 changer transitions 0/287 dead transitions. [2022-04-18 15:53:45,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 287 transitions, 810 flow [2022-04-18 15:53:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-04-18 15:53:45,940 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7731182795698924 [2022-04-18 15:53:45,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-04-18 15:53:45,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-04-18 15:53:45,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:45,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-04-18 15:53:45,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 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 15:53:45,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 15:53:45,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 310.0) internal successors, (1240), 4 states have internal predecessors, (1240), 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 15:53:45,945 INFO L186 Difference]: Start difference. First operand has 287 places, 293 transitions, 668 flow. Second operand 3 states and 719 transitions. [2022-04-18 15:53:45,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 287 transitions, 810 flow [2022-04-18 15:53:45,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 287 transitions, 806 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:45,953 INFO L242 Difference]: Finished difference. Result has 275 places, 281 transitions, 662 flow [2022-04-18 15:53:45,954 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=310, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=662, PETRI_PLACES=275, PETRI_TRANSITIONS=281} [2022-04-18 15:53:45,955 INFO L335 CegarLoopForPetriNet]: 295 programPoint places, -20 predicate places. [2022-04-18 15:53:45,955 INFO L478 AbstractCegarLoop]: Abstraction has has 275 places, 281 transitions, 662 flow [2022-04-18 15:53:45,955 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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 15:53:45,955 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:45,955 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:45,956 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 15:53:45,956 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 15:53:45,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:45,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1840392357, now seen corresponding path program 1 times [2022-04-18 15:53:45,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:45,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547443233] [2022-04-18 15:53:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:45,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:45,976 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 15:53:45,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:45,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547443233] [2022-04-18 15:53:45,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547443233] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:45,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:45,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:53:45,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928544055] [2022-04-18 15:53:45,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:45,977 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:45,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:45,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:45,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:45,979 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 310 [2022-04-18 15:53:45,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 281 transitions, 662 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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 15:53:45,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:45,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 310 [2022-04-18 15:53:45,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand