./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c --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/weaver/chl-word-subst.wvr.c -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 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:33:39,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:33:39,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:33:39,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:33:39,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:33:39,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:33:39,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:33:39,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:33:39,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:33:39,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:33:39,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:33:39,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:33:39,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:33:39,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:33:39,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:33:39,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:33:39,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:33:39,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:33:39,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:33:39,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:33:39,192 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:33:39,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:33:39,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:33:39,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:33:39,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:33:39,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:33:39,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:33:39,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:33:39,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:33:39,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:33:39,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:33:39,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:33:39,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:33:39,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:33:39,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:33:39,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:33:39,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:33:39,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:33:39,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:33:39,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:33:39,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:33:39,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:33:39,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 16:33:39,239 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:33:39,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:33:39,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:33:39,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:33:39,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:33:39,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:33:39,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:33:39,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:33:39,244 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:33:39,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:33:39,245 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:33:39,245 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:33:39,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:33:39,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:33:39,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:33:39,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:33:39,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:33:39,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:33:39,246 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:33:39,246 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:33:39,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:33:39,247 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:33:39,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:33:39,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:33:39,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:33:39,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:33:39,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:33:39,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:33:39,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:33:39,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:33:39,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:33:39,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:33:39,249 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:33:39,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 16:33:39,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:33:39,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c397d7a260fe673f9e4655b5dca942c114f9b11115010a8eef60e068615ab1 [2022-04-18 16:33:39,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:33:39,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:33:39,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:33:39,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:33:39,527 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:33:39,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-04-18 16:33:39,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ee2dec0/404284a7a72a4ca38a5e63904ba05da0/FLAG3273a8e03 [2022-04-18 16:33:39,980 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:33:39,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-04-18 16:33:39,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ee2dec0/404284a7a72a4ca38a5e63904ba05da0/FLAG3273a8e03 [2022-04-18 16:33:40,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5ee2dec0/404284a7a72a4ca38a5e63904ba05da0 [2022-04-18 16:33:40,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:33:40,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:33:40,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:33:40,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:33:40,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:33:40,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15cc6e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40, skipping insertion in model container [2022-04-18 16:33:40,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:33:40,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:33:40,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2022-04-18 16:33:40,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:33:40,669 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:33:40,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2022-04-18 16:33:40,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:33:40,760 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:33:40,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40 WrapperNode [2022-04-18 16:33:40,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:33:40,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:33:40,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:33:40,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:33:40,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,836 INFO L137 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 268 [2022-04-18 16:33:40,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:33:40,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:33:40,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:33:40,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:33:40,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:33:40,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:33:40,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:33:40,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:33:40,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (1/1) ... [2022-04-18 16:33:40,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:33:40,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:40,961 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 16:33:40,986 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 16:33:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:33:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:33:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:33:41,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:33:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 16:33:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 16:33:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 16:33:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 16:33:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-04-18 16:33:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-04-18 16:33:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:33:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 16:33:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:33:41,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:33:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:33:41,016 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 16:33:41,172 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:33:41,173 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:33:41,859 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:33:41,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:33:41,878 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-04-18 16:33:41,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:33:41 BoogieIcfgContainer [2022-04-18 16:33:41,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:33:41,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:33:41,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:33:41,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:33:41,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:33:40" (1/3) ... [2022-04-18 16:33:41,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6477c340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:33:41, skipping insertion in model container [2022-04-18 16:33:41,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:40" (2/3) ... [2022-04-18 16:33:41,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6477c340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:33:41, skipping insertion in model container [2022-04-18 16:33:41,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:33:41" (3/3) ... [2022-04-18 16:33:41,889 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-04-18 16:33:41,894 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:33:41,894 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:33:41,894 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-04-18 16:33:41,895 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:33:42,048 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 16:33:42,101 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 16:33:42,108 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 16:33:42,109 INFO L341 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2022-04-18 16:33:42,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 669 places, 698 transitions, 1420 flow [2022-04-18 16:33:42,342 INFO L129 PetriNetUnfolder]: 39/695 cut-off events. [2022-04-18 16:33:42,343 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 16:33:42,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 695 events. 39/695 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1905 event pairs, 0 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 501. Up to 3 conditions per place. [2022-04-18 16:33:42,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 669 places, 698 transitions, 1420 flow [2022-04-18 16:33:42,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 645 places, 672 transitions, 1362 flow [2022-04-18 16:33:42,377 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2022-04-18 16:33:42,377 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 16:33:42,377 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:42,378 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] [2022-04-18 16:33:42,379 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 16:33:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1374587086, now seen corresponding path program 1 times [2022-04-18 16:33:42,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:42,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803187298] [2022-04-18 16:33:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:42,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:42,584 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 16:33:42,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:42,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803187298] [2022-04-18 16:33:42,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803187298] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:42,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:42,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650309436] [2022-04-18 16:33:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:42,596 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:42,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:42,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:42,635 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 698 [2022-04-18 16:33:42,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 672 transitions, 1362 flow. Second operand has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:42,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:42,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 698 [2022-04-18 16:33:42,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:43,445 INFO L129 PetriNetUnfolder]: 275/2807 cut-off events. [2022-04-18 16:33:43,446 INFO L130 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-04-18 16:33:43,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3186 conditions, 2807 events. 275/2807 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 22879 event pairs, 132 based on Foata normal form. 75/2286 useless extension candidates. Maximal degree in co-relation 2747. Up to 250 conditions per place. [2022-04-18 16:33:43,552 INFO L132 encePairwiseOnDemand]: 682/698 looper letters, 21 selfloop transitions, 2 changer transitions 7/658 dead transitions. [2022-04-18 16:33:43,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 658 transitions, 1380 flow [2022-04-18 16:33:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2014 transitions. [2022-04-18 16:33:43,575 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9617956064947469 [2022-04-18 16:33:43,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2014 transitions. [2022-04-18 16:33:43,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2014 transitions. [2022-04-18 16:33:43,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:43,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2014 transitions. [2022-04-18 16:33:43,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 671.3333333333334) internal successors, (2014), 3 states have internal predecessors, (2014), 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 16:33:43,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:43,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:43,611 INFO L186 Difference]: Start difference. First operand has 645 places, 672 transitions, 1362 flow. Second operand 3 states and 2014 transitions. [2022-04-18 16:33:43,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 658 transitions, 1380 flow [2022-04-18 16:33:43,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 658 transitions, 1368 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-04-18 16:33:43,637 INFO L242 Difference]: Finished difference. Result has 640 places, 651 transitions, 1312 flow [2022-04-18 16:33:43,641 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1312, PETRI_PLACES=640, PETRI_TRANSITIONS=651} [2022-04-18 16:33:43,645 INFO L335 CegarLoopForPetriNet]: 645 programPoint places, -5 predicate places. [2022-04-18 16:33:43,646 INFO L478 AbstractCegarLoop]: Abstraction has has 640 places, 651 transitions, 1312 flow [2022-04-18 16:33:43,648 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:43,648 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:43,648 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] [2022-04-18 16:33:43,649 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:33:43,649 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 16:33:43,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:43,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1079554109, now seen corresponding path program 1 times [2022-04-18 16:33:43,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:43,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297494852] [2022-04-18 16:33:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:43,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:43,739 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 16:33:43,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:43,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297494852] [2022-04-18 16:33:43,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297494852] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:43,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:43,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:43,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065615578] [2022-04-18 16:33:43,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:43,744 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:43,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:43,749 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 698 [2022-04-18 16:33:43,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 651 transitions, 1312 flow. Second operand has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:43,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:43,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 698 [2022-04-18 16:33:43,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:44,333 INFO L129 PetriNetUnfolder]: 161/2020 cut-off events. [2022-04-18 16:33:44,333 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-04-18 16:33:44,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 2020 events. 161/2020 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 13695 event pairs, 60 based on Foata normal form. 0/1606 useless extension candidates. Maximal degree in co-relation 2143. Up to 142 conditions per place. [2022-04-18 16:33:44,393 INFO L132 encePairwiseOnDemand]: 695/698 looper letters, 21 selfloop transitions, 2 changer transitions 0/650 dead transitions. [2022-04-18 16:33:44,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 650 transitions, 1356 flow [2022-04-18 16:33:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2001 transitions. [2022-04-18 16:33:44,400 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9555873925501432 [2022-04-18 16:33:44,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2001 transitions. [2022-04-18 16:33:44,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2001 transitions. [2022-04-18 16:33:44,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:44,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2001 transitions. [2022-04-18 16:33:44,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 667.0) internal successors, (2001), 3 states have internal predecessors, (2001), 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 16:33:44,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:44,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:44,413 INFO L186 Difference]: Start difference. First operand has 640 places, 651 transitions, 1312 flow. Second operand 3 states and 2001 transitions. [2022-04-18 16:33:44,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 650 transitions, 1356 flow [2022-04-18 16:33:44,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 650 transitions, 1352 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:44,440 INFO L242 Difference]: Finished difference. Result has 632 places, 650 transitions, 1310 flow [2022-04-18 16:33:44,441 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1310, PETRI_PLACES=632, PETRI_TRANSITIONS=650} [2022-04-18 16:33:44,442 INFO L335 CegarLoopForPetriNet]: 645 programPoint places, -13 predicate places. [2022-04-18 16:33:44,442 INFO L478 AbstractCegarLoop]: Abstraction has has 632 places, 650 transitions, 1310 flow [2022-04-18 16:33:44,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:44,444 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:44,444 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, 1, 1] [2022-04-18 16:33:44,444 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:33:44,444 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 16:33:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 130010636, now seen corresponding path program 1 times [2022-04-18 16:33:44,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:44,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369227097] [2022-04-18 16:33:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:44,548 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 16:33:44,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:44,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369227097] [2022-04-18 16:33:44,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369227097] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:44,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:44,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:44,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334937700] [2022-04-18 16:33:44,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:44,555 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:44,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:44,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:44,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:44,560 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 698 [2022-04-18 16:33:44,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 650 transitions, 1310 flow. Second operand has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:44,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:44,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 698 [2022-04-18 16:33:44,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:45,186 INFO L129 PetriNetUnfolder]: 275/2747 cut-off events. [2022-04-18 16:33:45,186 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-04-18 16:33:45,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 2747 events. 275/2747 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 21984 event pairs, 132 based on Foata normal form. 0/2182 useless extension candidates. Maximal degree in co-relation 2965. Up to 250 conditions per place. [2022-04-18 16:33:45,283 INFO L132 encePairwiseOnDemand]: 695/698 looper letters, 21 selfloop transitions, 2 changer transitions 0/649 dead transitions. [2022-04-18 16:33:45,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 649 transitions, 1354 flow [2022-04-18 16:33:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2001 transitions. [2022-04-18 16:33:45,291 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9555873925501432 [2022-04-18 16:33:45,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2001 transitions. [2022-04-18 16:33:45,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2001 transitions. [2022-04-18 16:33:45,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:45,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2001 transitions. [2022-04-18 16:33:45,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 667.0) internal successors, (2001), 3 states have internal predecessors, (2001), 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 16:33:45,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:45,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:45,304 INFO L186 Difference]: Start difference. First operand has 632 places, 650 transitions, 1310 flow. Second operand 3 states and 2001 transitions. [2022-04-18 16:33:45,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 649 transitions, 1354 flow [2022-04-18 16:33:45,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 649 transitions, 1350 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:45,320 INFO L242 Difference]: Finished difference. Result has 631 places, 649 transitions, 1308 flow [2022-04-18 16:33:45,321 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1308, PETRI_PLACES=631, PETRI_TRANSITIONS=649} [2022-04-18 16:33:45,324 INFO L335 CegarLoopForPetriNet]: 645 programPoint places, -14 predicate places. [2022-04-18 16:33:45,324 INFO L478 AbstractCegarLoop]: Abstraction has has 631 places, 649 transitions, 1308 flow [2022-04-18 16:33:45,325 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:45,326 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:45,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:45,326 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 16:33:45,328 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 16:33:45,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:45,329 INFO L85 PathProgramCache]: Analyzing trace with hash -124742689, now seen corresponding path program 1 times [2022-04-18 16:33:45,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:45,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867380019] [2022-04-18 16:33:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:45,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:45,405 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 16:33:45,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:45,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867380019] [2022-04-18 16:33:45,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867380019] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:45,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:45,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:45,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024724970] [2022-04-18 16:33:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:45,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:45,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:45,416 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 656 out of 698 [2022-04-18 16:33:45,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 649 transitions, 1308 flow. Second operand has 3 states, 3 states have (on average 657.3333333333334) internal successors, (1972), 3 states have internal predecessors, (1972), 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 16:33:45,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:45,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 656 of 698 [2022-04-18 16:33:45,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:46,150 INFO L129 PetriNetUnfolder]: 286/2975 cut-off events. [2022-04-18 16:33:46,150 INFO L130 PetriNetUnfolder]: For 15/20 co-relation queries the response was YES. [2022-04-18 16:33:46,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3324 conditions, 2975 events. 286/2975 cut-off events. For 15/20 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 24714 event pairs, 132 based on Foata normal form. 0/2374 useless extension candidates. Maximal degree in co-relation 3270. Up to 286 conditions per place. [2022-04-18 16:33:46,211 INFO L132 encePairwiseOnDemand]: 695/698 looper letters, 24 selfloop transitions, 2 changer transitions 0/648 dead transitions. [2022-04-18 16:33:46,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 648 transitions, 1358 flow [2022-04-18 16:33:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1995 transitions. [2022-04-18 16:33:46,216 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9527220630372493 [2022-04-18 16:33:46,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1995 transitions. [2022-04-18 16:33:46,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1995 transitions. [2022-04-18 16:33:46,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:46,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1995 transitions. [2022-04-18 16:33:46,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 665.0) internal successors, (1995), 3 states have internal predecessors, (1995), 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 16:33:46,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:46,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:46,227 INFO L186 Difference]: Start difference. First operand has 631 places, 649 transitions, 1308 flow. Second operand 3 states and 1995 transitions. [2022-04-18 16:33:46,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 648 transitions, 1358 flow [2022-04-18 16:33:46,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 648 transitions, 1354 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:46,238 INFO L242 Difference]: Finished difference. Result has 630 places, 648 transitions, 1306 flow [2022-04-18 16:33:46,239 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1306, PETRI_PLACES=630, PETRI_TRANSITIONS=648} [2022-04-18 16:33:46,240 INFO L335 CegarLoopForPetriNet]: 645 programPoint places, -15 predicate places. [2022-04-18 16:33:46,240 INFO L478 AbstractCegarLoop]: Abstraction has has 630 places, 648 transitions, 1306 flow [2022-04-18 16:33:46,242 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 657.3333333333334) internal successors, (1972), 3 states have internal predecessors, (1972), 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 16:33:46,242 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:46,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:46,242 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 16:33:46,242 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 16:33:46,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:46,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1824422713, now seen corresponding path program 1 times [2022-04-18 16:33:46,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:46,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782889087] [2022-04-18 16:33:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:46,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:46,273 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 16:33:46,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:46,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782889087] [2022-04-18 16:33:46,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782889087] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:46,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:46,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474583659] [2022-04-18 16:33:46,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:46,275 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:46,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:46,279 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 656 out of 698 [2022-04-18 16:33:46,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 648 transitions, 1306 flow. Second operand has 3 states, 3 states have (on average 657.3333333333334) internal successors, (1972), 3 states have internal predecessors, (1972), 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 16:33:46,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:46,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 656 of 698 [2022-04-18 16:33:46,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:46,810 INFO L129 PetriNetUnfolder]: 177/2075 cut-off events. [2022-04-18 16:33:46,810 INFO L130 PetriNetUnfolder]: For 22/25 co-relation queries the response was YES. [2022-04-18 16:33:46,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2270 conditions, 2075 events. 177/2075 cut-off events. For 22/25 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 14456 event pairs, 60 based on Foata normal form. 0/1669 useless extension candidates. Maximal degree in co-relation 2209. Up to 174 conditions per place. [2022-04-18 16:33:46,876 INFO L132 encePairwiseOnDemand]: 695/698 looper letters, 24 selfloop transitions, 2 changer transitions 0/647 dead transitions. [2022-04-18 16:33:46,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 647 transitions, 1356 flow [2022-04-18 16:33:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1995 transitions. [2022-04-18 16:33:46,881 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9527220630372493 [2022-04-18 16:33:46,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1995 transitions. [2022-04-18 16:33:46,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1995 transitions. [2022-04-18 16:33:46,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:46,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1995 transitions. [2022-04-18 16:33:46,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 665.0) internal successors, (1995), 3 states have internal predecessors, (1995), 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 16:33:46,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:46,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:46,893 INFO L186 Difference]: Start difference. First operand has 630 places, 648 transitions, 1306 flow. Second operand 3 states and 1995 transitions. [2022-04-18 16:33:46,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 647 transitions, 1356 flow [2022-04-18 16:33:46,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 647 transitions, 1352 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:46,905 INFO L242 Difference]: Finished difference. Result has 629 places, 647 transitions, 1304 flow [2022-04-18 16:33:46,906 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1304, PETRI_PLACES=629, PETRI_TRANSITIONS=647} [2022-04-18 16:33:46,908 INFO L335 CegarLoopForPetriNet]: 645 programPoint places, -16 predicate places. [2022-04-18 16:33:46,908 INFO L478 AbstractCegarLoop]: Abstraction has has 629 places, 647 transitions, 1304 flow [2022-04-18 16:33:46,910 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 657.3333333333334) internal successors, (1972), 3 states have internal predecessors, (1972), 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 16:33:46,910 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:46,910 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, 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 16:33:46,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 16:33:46,910 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 16:33:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash -879803904, now seen corresponding path program 1 times [2022-04-18 16:33:46,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:46,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365057855] [2022-04-18 16:33:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:46,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:46,943 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 16:33:46,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:46,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365057855] [2022-04-18 16:33:46,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365057855] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:46,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:46,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206698135] [2022-04-18 16:33:46,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:46,945 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:46,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:46,948 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 656 out of 698 [2022-04-18 16:33:46,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 647 transitions, 1304 flow. Second operand has 3 states, 3 states have (on average 657.3333333333334) internal successors, (1972), 3 states have internal predecessors, (1972), 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 16:33:46,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:46,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 656 of 698 [2022-04-18 16:33:46,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:47,542 INFO L129 PetriNetUnfolder]: 300/2706 cut-off events. [2022-04-18 16:33:47,543 INFO L130 PetriNetUnfolder]: For 71/75 co-relation queries the response was YES. [2022-04-18 16:33:47,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3040 conditions, 2706 events. 300/2706 cut-off events. For 71/75 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 20955 event pairs, 132 based on Foata normal form. 0/2175 useless extension candidates. Maximal degree in co-relation 2972. Up to 319 conditions per place. [2022-04-18 16:33:47,622 INFO L132 encePairwiseOnDemand]: 695/698 looper letters, 24 selfloop transitions, 2 changer transitions 0/646 dead transitions. [2022-04-18 16:33:47,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 646 transitions, 1354 flow [2022-04-18 16:33:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:47,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1995 transitions. [2022-04-18 16:33:47,627 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9527220630372493 [2022-04-18 16:33:47,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1995 transitions. [2022-04-18 16:33:47,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1995 transitions. [2022-04-18 16:33:47,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:47,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1995 transitions. [2022-04-18 16:33:47,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 665.0) internal successors, (1995), 3 states have internal predecessors, (1995), 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 16:33:47,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:47,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:47,651 INFO L186 Difference]: Start difference. First operand has 629 places, 647 transitions, 1304 flow. Second operand 3 states and 1995 transitions. [2022-04-18 16:33:47,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 646 transitions, 1354 flow [2022-04-18 16:33:47,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 646 transitions, 1350 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:47,663 INFO L242 Difference]: Finished difference. Result has 628 places, 646 transitions, 1302 flow [2022-04-18 16:33:47,664 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1302, PETRI_PLACES=628, PETRI_TRANSITIONS=646} [2022-04-18 16:33:47,667 INFO L335 CegarLoopForPetriNet]: 645 programPoint places, -17 predicate places. [2022-04-18 16:33:47,667 INFO L478 AbstractCegarLoop]: Abstraction has has 628 places, 646 transitions, 1302 flow [2022-04-18 16:33:47,668 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 657.3333333333334) internal successors, (1972), 3 states have internal predecessors, (1972), 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 16:33:47,668 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:47,668 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, 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 16:33:47,668 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 16:33:47,669 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 16:33:47,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash 279668667, now seen corresponding path program 1 times [2022-04-18 16:33:47,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:47,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743769874] [2022-04-18 16:33:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:47,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:47,734 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 16:33:47,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:47,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743769874] [2022-04-18 16:33:47,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743769874] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:47,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:47,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:47,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978736210] [2022-04-18 16:33:47,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:47,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:47,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:47,743 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 698 [2022-04-18 16:33:47,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 646 transitions, 1302 flow. Second operand has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:47,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:47,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 698 [2022-04-18 16:33:47,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:48,253 INFO L129 PetriNetUnfolder]: 193/2495 cut-off events. [2022-04-18 16:33:48,253 INFO L130 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2022-04-18 16:33:48,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 2495 events. 193/2495 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 19391 event pairs, 64 based on Foata normal form. 0/2039 useless extension candidates. Maximal degree in co-relation 2608. Up to 151 conditions per place. [2022-04-18 16:33:48,309 INFO L132 encePairwiseOnDemand]: 692/698 looper letters, 17 selfloop transitions, 1 changer transitions 0/641 dead transitions. [2022-04-18 16:33:48,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 641 transitions, 1328 flow [2022-04-18 16:33:48,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:48,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2000 transitions. [2022-04-18 16:33:48,315 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9551098376313276 [2022-04-18 16:33:48,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2000 transitions. [2022-04-18 16:33:48,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2000 transitions. [2022-04-18 16:33:48,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:48,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2000 transitions. [2022-04-18 16:33:48,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 666.6666666666666) internal successors, (2000), 3 states have internal predecessors, (2000), 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 16:33:48,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:48,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:48,325 INFO L186 Difference]: Start difference. First operand has 628 places, 646 transitions, 1302 flow. Second operand 3 states and 2000 transitions. [2022-04-18 16:33:48,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 641 transitions, 1328 flow [2022-04-18 16:33:48,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 641 transitions, 1324 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:48,337 INFO L242 Difference]: Finished difference. Result has 623 places, 641 transitions, 1290 flow [2022-04-18 16:33:48,338 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1290, PETRI_PLACES=623, PETRI_TRANSITIONS=641} [2022-04-18 16:33:48,339 INFO L335 CegarLoopForPetriNet]: 645 programPoint places, -22 predicate places. [2022-04-18 16:33:48,339 INFO L478 AbstractCegarLoop]: Abstraction has has 623 places, 641 transitions, 1290 flow [2022-04-18 16:33:48,340 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:48,340 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:48,340 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, 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 16:33:48,340 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 16:33:48,341 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 16:33:48,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:48,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1247260069, now seen corresponding path program 1 times [2022-04-18 16:33:48,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:48,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283095460] [2022-04-18 16:33:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:48,381 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 16:33:48,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:48,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283095460] [2022-04-18 16:33:48,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283095460] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:48,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:48,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:48,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2833322] [2022-04-18 16:33:48,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:48,384 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:48,387 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 698 [2022-04-18 16:33:48,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 641 transitions, 1290 flow. Second operand has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:48,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:48,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 698 [2022-04-18 16:33:48,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:49,070 INFO L129 PetriNetUnfolder]: 296/2985 cut-off events. [2022-04-18 16:33:49,070 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-04-18 16:33:49,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3337 conditions, 2985 events. 296/2985 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23399 event pairs, 132 based on Foata normal form. 0/2418 useless extension candidates. Maximal degree in co-relation 3262. Up to 290 conditions per place. [2022-04-18 16:33:49,145 INFO L132 encePairwiseOnDemand]: 695/698 looper letters, 21 selfloop transitions, 2 changer transitions 0/640 dead transitions. [2022-04-18 16:33:49,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 640 transitions, 1334 flow [2022-04-18 16:33:49,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2001 transitions. [2022-04-18 16:33:49,150 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9555873925501432 [2022-04-18 16:33:49,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2001 transitions. [2022-04-18 16:33:49,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2001 transitions. [2022-04-18 16:33:49,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:49,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2001 transitions. [2022-04-18 16:33:49,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 667.0) internal successors, (2001), 3 states have internal predecessors, (2001), 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 16:33:49,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:49,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 698.0) internal successors, (2792), 4 states have internal predecessors, (2792), 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 16:33:49,161 INFO L186 Difference]: Start difference. First operand has 623 places, 641 transitions, 1290 flow. Second operand 3 states and 2001 transitions. [2022-04-18 16:33:49,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 640 transitions, 1334 flow [2022-04-18 16:33:49,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 640 transitions, 1333 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:33:49,173 INFO L242 Difference]: Finished difference. Result has 623 places, 640 transitions, 1291 flow [2022-04-18 16:33:49,174 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=698, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1291, PETRI_PLACES=623, PETRI_TRANSITIONS=640} [2022-04-18 16:33:49,175 INFO L335 CegarLoopForPetriNet]: 645 programPoint places, -22 predicate places. [2022-04-18 16:33:49,175 INFO L478 AbstractCegarLoop]: Abstraction has has 623 places, 640 transitions, 1291 flow [2022-04-18 16:33:49,176 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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 16:33:49,176 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:49,176 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, 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 16:33:49,177 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 16:33:49,177 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err16ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 136 more)] === [2022-04-18 16:33:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:49,177 INFO L85 PathProgramCache]: Analyzing trace with hash 766234768, now seen corresponding path program 1 times [2022-04-18 16:33:49,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:49,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932722579] [2022-04-18 16:33:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:49,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:49,325 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 16:33:49,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:49,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932722579] [2022-04-18 16:33:49,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932722579] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:49,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:49,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:33:49,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783146281] [2022-04-18 16:33:49,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:49,328 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:33:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:33:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:33:49,332 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 536 out of 698 [2022-04-18 16:33:49,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 640 transitions, 1291 flow. Second operand has 6 states, 6 states have (on average 537.8333333333334) internal successors, (3227), 6 states have internal predecessors, (3227), 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 16:33:49,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:49,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 536 of 698 [2022-04-18 16:33:49,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand