./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:25:21,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:25:21,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:25:21,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:25:21,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:25:21,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:25:21,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:25:21,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:25:21,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:25:21,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:25:21,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:25:21,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:25:21,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:25:21,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:25:21,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:25:21,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:25:21,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:25:21,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:25:21,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:25:21,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:25:21,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:25:21,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:25:21,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:25:21,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:25:21,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:25:21,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:25:21,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:25:21,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:25:21,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:25:21,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:25:21,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:25:21,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:25:21,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:25:21,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:25:21,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:25:21,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:25:21,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:25:21,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:25:21,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:25:21,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:25:21,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:25:21,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:25:21,529 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:25:21,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:25:21,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:25:21,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:25:21,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:25:21,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:25:21,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:25:21,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:25:21,533 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:25:21,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:25:21,534 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:25:21,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:25:21,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:25:21,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:25:21,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:25:21,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:25:21,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:25:21,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:25:21,535 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:25:21,535 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:25:21,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:25:21,536 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:25:21,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:25:21,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:25:21,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:25:21,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:25:21,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:25:21,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:25:21,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:25:21,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:25:21,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:25:21,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:25:21,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:25:21,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:25:21,537 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:25:21,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:25:21,538 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:25:21,538 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:25:21,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:25:21,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:25:21,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:25:21,824 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:25:21,824 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:25:21,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-29 18:25:22,746 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:25:22,920 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:25:22,921 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-29 18:25:22,928 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caa06f3bb/6c4798b6e5bc4818a9e628fd36eeac05/FLAG6580c8b79 [2023-08-29 18:25:22,938 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caa06f3bb/6c4798b6e5bc4818a9e628fd36eeac05 [2023-08-29 18:25:22,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:25:22,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:25:22,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:25:22,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:25:22,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:25:22,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:25:22" (1/1) ... [2023-08-29 18:25:22,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2c2d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:22, skipping insertion in model container [2023-08-29 18:25:22,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:25:22" (1/1) ... [2023-08-29 18:25:22,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:25:22,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:25:23,131 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2023-08-29 18:25:23,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:25:23,151 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:25:23,185 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2023-08-29 18:25:23,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:25:23,216 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:25:23,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23 WrapperNode [2023-08-29 18:25:23,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:25:23,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:25:23,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:25:23,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:25:23,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,244 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 176 [2023-08-29 18:25:23,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:25:23,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:25:23,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:25:23,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:25:23,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,274 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:25:23,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:25:23,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:25:23,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:25:23,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (1/1) ... [2023-08-29 18:25:23,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:25:23,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:25:23,310 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) [2023-08-29 18:25:23,342 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 [2023-08-29 18:25:23,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:25:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:25:23,357 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:25:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:25:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:25:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:25:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:25:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:25:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:25:23,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:25:23,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:25:23,360 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:25:23,435 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:25:23,436 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:25:23,705 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:25:23,711 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:25:23,712 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-29 18:25:23,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:25:23 BoogieIcfgContainer [2023-08-29 18:25:23,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:25:23,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:25:23,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:25:23,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:25:23,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:25:22" (1/3) ... [2023-08-29 18:25:23,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:25:23, skipping insertion in model container [2023-08-29 18:25:23,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:23" (2/3) ... [2023-08-29 18:25:23,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:25:23, skipping insertion in model container [2023-08-29 18:25:23,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:25:23" (3/3) ... [2023-08-29 18:25:23,719 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-29 18:25:23,725 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:25:23,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:25:23,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 18:25:23,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:25:23,808 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:25:23,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 183 transitions, 374 flow [2023-08-29 18:25:23,929 INFO L130 PetriNetUnfolder]: 33/262 cut-off events. [2023-08-29 18:25:23,929 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:25:23,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 262 events. 33/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1080 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-08-29 18:25:23,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 183 transitions, 374 flow [2023-08-29 18:25:23,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 183 transitions, 374 flow [2023-08-29 18:25:23,949 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:25:23,965 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 183 transitions, 374 flow [2023-08-29 18:25:23,974 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 183 transitions, 374 flow [2023-08-29 18:25:23,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 183 transitions, 374 flow [2023-08-29 18:25:24,044 INFO L130 PetriNetUnfolder]: 33/262 cut-off events. [2023-08-29 18:25:24,044 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:25:24,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 262 events. 33/262 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1080 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-08-29 18:25:24,055 INFO L119 LiptonReduction]: Number of co-enabled transitions 11220 [2023-08-29 18:25:25,952 INFO L134 LiptonReduction]: Checked pairs total: 43517 [2023-08-29 18:25:25,955 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-29 18:25:25,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:25:25,978 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20379a24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:25:25,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-29 18:25:25,982 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-29 18:25:25,982 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:25:25,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:25,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:25:25,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-08-29 18:25:25,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash 633986868, now seen corresponding path program 1 times [2023-08-29 18:25:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:25,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178877986] [2023-08-29 18:25:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:25,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:25:26,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:26,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178877986] [2023-08-29 18:25:26,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178877986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:26,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:26,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:26,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829451708] [2023-08-29 18:25:26,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:26,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:26,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:26,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:26,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 296 [2023-08-29 18:25:26,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 94 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:26,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:26,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 296 [2023-08-29 18:25:26,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:26,326 INFO L130 PetriNetUnfolder]: 271/853 cut-off events. [2023-08-29 18:25:26,327 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:25:26,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 853 events. 271/853 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 5079 event pairs, 0 based on Foata normal form. 96/841 useless extension candidates. Maximal degree in co-relation 1386. Up to 545 conditions per place. [2023-08-29 18:25:26,331 INFO L137 encePairwiseOnDemand]: 275/296 looper letters, 49 selfloop transitions, 2 changer transitions 2/92 dead transitions. [2023-08-29 18:25:26,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 298 flow [2023-08-29 18:25:26,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 545 transitions. [2023-08-29 18:25:26,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6137387387387387 [2023-08-29 18:25:26,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 545 transitions. [2023-08-29 18:25:26,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 545 transitions. [2023-08-29 18:25:26,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:26,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 545 transitions. [2023-08-29 18:25:26,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:26,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:26,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:26,357 INFO L175 Difference]: Start difference. First operand has 78 places, 94 transitions, 196 flow. Second operand 3 states and 545 transitions. [2023-08-29 18:25:26,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 298 flow [2023-08-29 18:25:26,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:25:26,362 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 161 flow [2023-08-29 18:25:26,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2023-08-29 18:25:26,367 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-08-29 18:25:26,367 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 161 flow [2023-08-29 18:25:26,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:26,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:26,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:25:26,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:25:26,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-08-29 18:25:26,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1829251685, now seen corresponding path program 1 times [2023-08-29 18:25:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583947427] [2023-08-29 18:25:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:26,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:26,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:25:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:26,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:25:26,433 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:25:26,434 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-29 18:25:26,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-29 18:25:26,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-29 18:25:26,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-29 18:25:26,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-29 18:25:26,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-29 18:25:26,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-29 18:25:26,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-29 18:25:26,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-29 18:25:26,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-29 18:25:26,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-08-29 18:25:26,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-08-29 18:25:26,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-08-29 18:25:26,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-29 18:25:26,443 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-29 18:25:26,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-29 18:25:26,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-29 18:25:26,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-29 18:25:26,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-29 18:25:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:25:26,448 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 18:25:26,450 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:25:26,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:25:26,485 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:25:26,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 251 transitions, 520 flow [2023-08-29 18:25:26,528 INFO L130 PetriNetUnfolder]: 57/439 cut-off events. [2023-08-29 18:25:26,529 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:25:26,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 439 events. 57/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2030 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 264. Up to 9 conditions per place. [2023-08-29 18:25:26,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 251 transitions, 520 flow [2023-08-29 18:25:26,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 251 transitions, 520 flow [2023-08-29 18:25:26,534 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:25:26,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 251 transitions, 520 flow [2023-08-29 18:25:26,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 251 transitions, 520 flow [2023-08-29 18:25:26,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 251 transitions, 520 flow [2023-08-29 18:25:26,582 INFO L130 PetriNetUnfolder]: 57/439 cut-off events. [2023-08-29 18:25:26,582 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:25:26,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 439 events. 57/439 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2030 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 264. Up to 9 conditions per place. [2023-08-29 18:25:26,598 INFO L119 LiptonReduction]: Number of co-enabled transitions 32604 [2023-08-29 18:25:28,724 INFO L134 LiptonReduction]: Checked pairs total: 138906 [2023-08-29 18:25:28,724 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-29 18:25:28,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:25:28,726 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20379a24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:25:28,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-29 18:25:28,728 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-29 18:25:28,728 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:25:28,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:28,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:25:28,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:25:28,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1073619313, now seen corresponding path program 1 times [2023-08-29 18:25:28,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:28,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601904785] [2023-08-29 18:25:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:25:28,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:28,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601904785] [2023-08-29 18:25:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601904785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:28,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211468015] [2023-08-29 18:25:28,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:28,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 393 [2023-08-29 18:25:28,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 146 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:28,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:28,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 393 [2023-08-29 18:25:28,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:29,891 INFO L130 PetriNetUnfolder]: 8126/16149 cut-off events. [2023-08-29 18:25:29,892 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-08-29 18:25:29,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28708 conditions, 16149 events. 8126/16149 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 144988 event pairs, 7220 based on Foata normal form. 3358/17462 useless extension candidates. Maximal degree in co-relation 11406. Up to 12446 conditions per place. [2023-08-29 18:25:29,997 INFO L137 encePairwiseOnDemand]: 362/393 looper letters, 67 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-08-29 18:25:29,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 133 transitions, 422 flow [2023-08-29 18:25:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-08-29 18:25:29,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276505513146734 [2023-08-29 18:25:30,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-08-29 18:25:30,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-08-29 18:25:30,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:30,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-08-29 18:25:30,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,006 INFO L175 Difference]: Start difference. First operand has 120 places, 146 transitions, 310 flow. Second operand 3 states and 740 transitions. [2023-08-29 18:25:30,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 133 transitions, 422 flow [2023-08-29 18:25:30,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 133 transitions, 422 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:25:30,011 INFO L231 Difference]: Finished difference. Result has 121 places, 118 transitions, 264 flow [2023-08-29 18:25:30,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=121, PETRI_TRANSITIONS=118} [2023-08-29 18:25:30,012 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2023-08-29 18:25:30,012 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 118 transitions, 264 flow [2023-08-29 18:25:30,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:30,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:25:30,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:25:30,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:25:30,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:30,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1062390197, now seen corresponding path program 1 times [2023-08-29 18:25:30,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:30,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870709379] [2023-08-29 18:25:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:30,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:25:30,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:30,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870709379] [2023-08-29 18:25:30,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870709379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:30,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:30,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:30,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342981149] [2023-08-29 18:25:30,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:30,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:30,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:30,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:30,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 393 [2023-08-29 18:25:30,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 118 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:30,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 393 [2023-08-29 18:25:30,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:33,666 INFO L130 PetriNetUnfolder]: 42593/76982 cut-off events. [2023-08-29 18:25:33,667 INFO L131 PetriNetUnfolder]: For 1637/1637 co-relation queries the response was YES. [2023-08-29 18:25:33,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145899 conditions, 76982 events. 42593/76982 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 1555. Compared 722292 event pairs, 17140 based on Foata normal form. 0/69666 useless extension candidates. Maximal degree in co-relation 145741. Up to 41491 conditions per place. [2023-08-29 18:25:33,954 INFO L137 encePairwiseOnDemand]: 354/393 looper letters, 125 selfloop transitions, 28 changer transitions 0/188 dead transitions. [2023-08-29 18:25:33,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 188 transitions, 728 flow [2023-08-29 18:25:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 690 transitions. [2023-08-29 18:25:33,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852417302798982 [2023-08-29 18:25:33,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 690 transitions. [2023-08-29 18:25:33,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 690 transitions. [2023-08-29 18:25:33,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:33,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 690 transitions. [2023-08-29 18:25:33,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:33,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:33,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 393.0) internal successors, (1572), 4 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:33,961 INFO L175 Difference]: Start difference. First operand has 121 places, 118 transitions, 264 flow. Second operand 3 states and 690 transitions. [2023-08-29 18:25:33,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 188 transitions, 728 flow [2023-08-29 18:25:33,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 188 transitions, 725 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:25:33,966 INFO L231 Difference]: Finished difference. Result has 124 places, 146 transitions, 508 flow [2023-08-29 18:25:33,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=124, PETRI_TRANSITIONS=146} [2023-08-29 18:25:33,967 INFO L281 CegarLoopForPetriNet]: 120 programPoint places, 4 predicate places. [2023-08-29 18:25:33,967 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 146 transitions, 508 flow [2023-08-29 18:25:33,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:33,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:33,968 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 18:25:33,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:25:33,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2023-08-29 18:25:33,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1730138702, now seen corresponding path program 1 times [2023-08-29 18:25:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930668031] [2023-08-29 18:25:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:33,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:25:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:33,987 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:25:33,987 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:25:33,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-29 18:25:33,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-29 18:25:33,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-08-29 18:25:33,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-29 18:25:33,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-29 18:25:33,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-29 18:25:33,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-29 18:25:33,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-29 18:25:33,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-08-29 18:25:33,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-29 18:25:33,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-29 18:25:33,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-29 18:25:33,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-29 18:25:33,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-29 18:25:33,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-08-29 18:25:33,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-08-29 18:25:33,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-08-29 18:25:33,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-29 18:25:33,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-29 18:25:33,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-29 18:25:33,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-29 18:25:33,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-29 18:25:33,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-29 18:25:33,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-29 18:25:33,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-29 18:25:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:25:33,991 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 18:25:33,992 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:25:33,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:25:34,007 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:25:34,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 319 transitions, 668 flow [2023-08-29 18:25:34,060 INFO L130 PetriNetUnfolder]: 86/659 cut-off events. [2023-08-29 18:25:34,060 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:25:34,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 659 events. 86/659 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3192 event pairs, 1 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 447. Up to 16 conditions per place. [2023-08-29 18:25:34,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 319 transitions, 668 flow [2023-08-29 18:25:34,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 319 transitions, 668 flow [2023-08-29 18:25:34,067 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:25:34,068 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 319 transitions, 668 flow [2023-08-29 18:25:34,068 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 319 transitions, 668 flow [2023-08-29 18:25:34,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 319 transitions, 668 flow [2023-08-29 18:25:34,117 INFO L130 PetriNetUnfolder]: 86/659 cut-off events. [2023-08-29 18:25:34,118 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:25:34,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 659 events. 86/659 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3192 event pairs, 1 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 447. Up to 16 conditions per place. [2023-08-29 18:25:34,136 INFO L119 LiptonReduction]: Number of co-enabled transitions 62568 [2023-08-29 18:25:36,616 INFO L134 LiptonReduction]: Checked pairs total: 282097 [2023-08-29 18:25:36,616 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-29 18:25:36,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:25:36,619 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20379a24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:25:36,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-29 18:25:36,621 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-08-29 18:25:36,621 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:25:36,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:36,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:25:36,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:25:36,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1607785387, now seen corresponding path program 1 times [2023-08-29 18:25:36,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:36,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920566901] [2023-08-29 18:25:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:36,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:25:36,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920566901] [2023-08-29 18:25:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920566901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:36,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:36,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:36,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044013495] [2023-08-29 18:25:36,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:36,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:36,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:36,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 492 [2023-08-29 18:25:36,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 192 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:36,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:36,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 492 [2023-08-29 18:25:36,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:56,831 INFO L130 PetriNetUnfolder]: 202308/324010 cut-off events. [2023-08-29 18:25:56,831 INFO L131 PetriNetUnfolder]: For 2416/2416 co-relation queries the response was YES. [2023-08-29 18:25:57,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599057 conditions, 324010 events. 202308/324010 cut-off events. For 2416/2416 co-relation queries the response was YES. Maximal size of possible extension queue 7561. Compared 3309239 event pairs, 183676 based on Foata normal form. 62406/353269 useless extension candidates. Maximal degree in co-relation 102145. Up to 273142 conditions per place. [2023-08-29 18:25:58,499 INFO L137 encePairwiseOnDemand]: 453/492 looper letters, 86 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2023-08-29 18:25:58,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 172 transitions, 550 flow [2023-08-29 18:25:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2023-08-29 18:25:58,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6334688346883469 [2023-08-29 18:25:58,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2023-08-29 18:25:58,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2023-08-29 18:25:58,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:58,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2023-08-29 18:25:58,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:58,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 492.0) internal successors, (1968), 4 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:58,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 492.0) internal successors, (1968), 4 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:58,510 INFO L175 Difference]: Start difference. First operand has 158 places, 192 transitions, 414 flow. Second operand 3 states and 935 transitions. [2023-08-29 18:25:58,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 172 transitions, 550 flow [2023-08-29 18:25:58,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 172 transitions, 550 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:25:58,514 INFO L231 Difference]: Finished difference. Result has 159 places, 156 transitions, 352 flow [2023-08-29 18:25:58,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=492, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=159, PETRI_TRANSITIONS=156} [2023-08-29 18:25:58,515 INFO L281 CegarLoopForPetriNet]: 158 programPoint places, 1 predicate places. [2023-08-29 18:25:58,515 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 156 transitions, 352 flow [2023-08-29 18:25:58,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:58,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:58,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:25:58,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 18:25:58,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 18:25:58,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:58,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1683904807, now seen corresponding path program 1 times [2023-08-29 18:25:58,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:58,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757934085] [2023-08-29 18:25:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:58,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:25:58,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757934085] [2023-08-29 18:25:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757934085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148906472] [2023-08-29 18:25:58,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:58,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:58,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 492 [2023-08-29 18:25:58,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 156 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:58,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:58,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 492 [2023-08-29 18:25:58,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand