./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_83-list2_racing1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 18:12:41,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:12:41,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:12:41,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:12:41,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:12:41,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:12:41,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:12:41,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:12:41,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:12:41,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:12:41,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:12:41,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:12:41,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:12:41,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:12:41,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:12:41,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:12:41,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:12:41,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:12:41,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:12:41,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:12:41,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:12:41,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:12:41,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:12:41,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:12:41,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:12:41,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:12:41,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:12:41,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:12:41,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:12:41,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:12:41,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:12:41,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:12:41,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:12:41,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:12:41,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:12:41,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:12:41,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:12:41,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:12:41,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:12:41,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:12:41,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:12:41,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:12:41,266 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:12:41,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:12:41,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:12:41,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:12:41,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:12:41,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:12:41,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:12:41,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:12:41,270 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:12:41,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:12:41,271 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:12:41,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:12:41,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:12:41,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:12:41,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:12:41,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:12:41,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:12:41,272 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:12:41,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:12:41,273 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:12:41,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:12:41,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:12:41,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:12:41,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:12:41,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:12:41,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:12:41,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:12:41,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:12:41,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:12:41,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:12:41,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:12:41,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:12:41,275 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:12:41,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:12:41,276 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:12:41,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:12:41,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:12:41,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:12:41,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:12:41,602 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:12:41,602 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:12:41,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-30 18:12:42,682 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:12:42,948 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:12:42,949 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-30 18:12:42,964 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98af98bf8/f75b28a858ce43ae91f0f8f63e8b4400/FLAGd3ec24b82 [2023-08-30 18:12:42,975 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98af98bf8/f75b28a858ce43ae91f0f8f63e8b4400 [2023-08-30 18:12:42,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:12:42,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:12:42,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:12:42,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:12:42,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:12:42,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:12:42" (1/1) ... [2023-08-30 18:12:42,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457efae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:42, skipping insertion in model container [2023-08-30 18:12:42,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:12:42" (1/1) ... [2023-08-30 18:12:42,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:12:43,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:12:43,474 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_83-list2_racing1.i[47038,47051] [2023-08-30 18:12:43,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:12:43,583 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:12:43,620 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_83-list2_racing1.i[47038,47051] [2023-08-30 18:12:43,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:12:43,727 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:12:43,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43 WrapperNode [2023-08-30 18:12:43,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:12:43,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:12:43,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:12:43,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:12:43,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,813 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 344 [2023-08-30 18:12:43,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:12:43,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:12:43,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:12:43,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:12:43,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,873 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:12:43,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:12:43,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:12:43,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:12:43,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (1/1) ... [2023-08-30 18:12:43,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:12:43,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:12:43,917 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) [2023-08-30 18:12:43,941 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 [2023-08-30 18:12:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:12:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 18:12:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 18:12:43,956 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 18:12:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:12:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 18:12:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 18:12:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 18:12:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:12:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 18:12:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 18:12:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:12:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 18:12:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-30 18:12:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-30 18:12:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:12:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:12:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:12:43,960 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 18:12:44,155 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:12:44,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:12:44,657 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:12:44,668 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:12:44,668 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-30 18:12:44,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:12:44 BoogieIcfgContainer [2023-08-30 18:12:44,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:12:44,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:12:44,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:12:44,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:12:44,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:12:42" (1/3) ... [2023-08-30 18:12:44,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bea7c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:12:44, skipping insertion in model container [2023-08-30 18:12:44,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:12:43" (2/3) ... [2023-08-30 18:12:44,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bea7c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:12:44, skipping insertion in model container [2023-08-30 18:12:44,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:12:44" (3/3) ... [2023-08-30 18:12:44,678 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-08-30 18:12:44,684 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:12:44,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:12:44,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 18:12:44,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:12:44,835 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-30 18:12:44,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-08-30 18:12:45,201 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-08-30 18:12:45,201 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-08-30 18:12:45,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-08-30 18:12:45,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 350 transitions, 742 flow [2023-08-30 18:12:45,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 349 transitions, 738 flow [2023-08-30 18:12:45,243 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:12:45,257 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 349 transitions, 738 flow [2023-08-30 18:12:45,260 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 349 transitions, 738 flow [2023-08-30 18:12:45,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 349 transitions, 738 flow [2023-08-30 18:12:45,455 INFO L130 PetriNetUnfolder]: 164/1070 cut-off events. [2023-08-30 18:12:45,455 INFO L131 PetriNetUnfolder]: For 36/54 co-relation queries the response was YES. [2023-08-30 18:12:45,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 1070 events. 164/1070 cut-off events. For 36/54 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6694 event pairs, 0 based on Foata normal form. 0/894 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-08-30 18:12:45,517 INFO L119 LiptonReduction]: Number of co-enabled transitions 51122 [2023-08-30 18:12:59,033 INFO L134 LiptonReduction]: Checked pairs total: 106624 [2023-08-30 18:12:59,033 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-30 18:12:59,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:12:59,049 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;@5481822, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:12:59,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 18:12:59,061 INFO L130 PetriNetUnfolder]: 14/102 cut-off events. [2023-08-30 18:12:59,061 INFO L131 PetriNetUnfolder]: For 5/7 co-relation queries the response was YES. [2023-08-30 18:12:59,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:12:59,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:12:59,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-30 18:12:59,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:12:59,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1015283174, now seen corresponding path program 1 times [2023-08-30 18:12:59,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:12:59,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025335835] [2023-08-30 18:12:59,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:12:59,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:12:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:12:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:12:59,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:12:59,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025335835] [2023-08-30 18:12:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025335835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:12:59,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:12:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 18:12:59,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316408586] [2023-08-30 18:12:59,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:12:59,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:12:59,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:12:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:12:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 18:12:59,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 627 [2023-08-30 18:12:59,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 112 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 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) [2023-08-30 18:12:59,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:12:59,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 627 [2023-08-30 18:12:59,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:13:10,183 INFO L130 PetriNetUnfolder]: 109462/157773 cut-off events. [2023-08-30 18:13:10,183 INFO L131 PetriNetUnfolder]: For 4893/4893 co-relation queries the response was YES. [2023-08-30 18:13:10,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305889 conditions, 157773 events. 109462/157773 cut-off events. For 4893/4893 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 1151139 event pairs, 68136 based on Foata normal form. 14388/146240 useless extension candidates. Maximal degree in co-relation 276379. Up to 145615 conditions per place. [2023-08-30 18:13:10,907 INFO L137 encePairwiseOnDemand]: 602/627 looper letters, 81 selfloop transitions, 2 changer transitions 1/98 dead transitions. [2023-08-30 18:13:10,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 404 flow [2023-08-30 18:13:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:13:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:13:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1013 transitions. [2023-08-30 18:13:10,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5385433280170122 [2023-08-30 18:13:10,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1013 transitions. [2023-08-30 18:13:10,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1013 transitions. [2023-08-30 18:13:10,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:13:10,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1013 transitions. [2023-08-30 18:13:10,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 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) [2023-08-30 18:13:10,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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) [2023-08-30 18:13:10,951 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 627.0) internal successors, (2508), 4 states have internal predecessors, (2508), 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) [2023-08-30 18:13:10,953 INFO L175 Difference]: Start difference. First operand has 84 places, 112 transitions, 264 flow. Second operand 3 states and 1013 transitions. [2023-08-30 18:13:10,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 404 flow [2023-08-30 18:13:10,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 98 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:13:10,978 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 224 flow [2023-08-30 18:13:10,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-08-30 18:13:10,983 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-08-30 18:13:10,983 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 224 flow [2023-08-30 18:13:10,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 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) [2023-08-30 18:13:10,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:13:10,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:13:10,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:13:10,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-30 18:13:10,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:13:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1080528569, now seen corresponding path program 1 times [2023-08-30 18:13:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:13:10,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184721769] [2023-08-30 18:13:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:13:10,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:13:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:13:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:13:11,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:13:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184721769] [2023-08-30 18:13:11,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184721769] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:13:11,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664034319] [2023-08-30 18:13:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:13:11,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:13:11,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:13:11,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:13:11,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 18:13:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:13:11,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 18:13:11,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:13:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:13:11,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:13:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:13:11,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664034319] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:13:11,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:13:11,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 18:13:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799832162] [2023-08-30 18:13:11,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:13:11,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:13:11,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:13:11,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:13:11,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:13:11,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 627 [2023-08-30 18:13:11,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 304.2857142857143) internal successors, (2130), 7 states have internal predecessors, (2130), 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) [2023-08-30 18:13:11,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:13:11,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 627 [2023-08-30 18:13:11,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:13:11,464 INFO L130 PetriNetUnfolder]: 14/41 cut-off events. [2023-08-30 18:13:11,464 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 18:13:11,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 41 events. 14/41 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 8/49 useless extension candidates. Maximal degree in co-relation 99. Up to 30 conditions per place. [2023-08-30 18:13:11,465 INFO L137 encePairwiseOnDemand]: 624/627 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-30 18:13:11,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 86 flow [2023-08-30 18:13:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:13:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:13:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1224 transitions. [2023-08-30 18:13:11,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2023-08-30 18:13:11,469 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1224 transitions. [2023-08-30 18:13:11,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1224 transitions. [2023-08-30 18:13:11,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:13:11,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1224 transitions. [2023-08-30 18:13:11,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 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) [2023-08-30 18:13:11,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 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) [2023-08-30 18:13:11,479 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 627.0) internal successors, (3135), 5 states have internal predecessors, (3135), 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) [2023-08-30 18:13:11,479 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 224 flow. Second operand 4 states and 1224 transitions. [2023-08-30 18:13:11,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 86 flow [2023-08-30 18:13:11,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 18:13:11,480 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-30 18:13:11,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=627, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-30 18:13:11,481 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -65 predicate places. [2023-08-30 18:13:11,481 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-30 18:13:11,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 304.2857142857143) internal successors, (2130), 7 states have internal predecessors, (2130), 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) [2023-08-30 18:13:11,484 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 18:13:11,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-30 18:13:11,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-30 18:13:11,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-30 18:13:11,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 18:13:11,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:13:11,691 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 18:13:11,693 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 18:13:11,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-08-30 18:13:11,837 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-08-30 18:13:11,838 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-08-30 18:13:11,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-08-30 18:13:11,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 350 transitions, 742 flow [2023-08-30 18:13:11,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 350 transitions, 742 flow [2023-08-30 18:13:11,857 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:13:11,858 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 350 transitions, 742 flow [2023-08-30 18:13:11,858 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 350 transitions, 742 flow [2023-08-30 18:13:11,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 350 transitions, 742 flow [2023-08-30 18:13:12,226 INFO L130 PetriNetUnfolder]: 164/1071 cut-off events. [2023-08-30 18:13:12,227 INFO L131 PetriNetUnfolder]: For 36/61 co-relation queries the response was YES. [2023-08-30 18:13:12,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1071 events. 164/1071 cut-off events. For 36/61 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6692 event pairs, 0 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 557. Up to 16 conditions per place. [2023-08-30 18:13:12,261 INFO L119 LiptonReduction]: Number of co-enabled transitions 51176 [2023-08-30 18:13:25,932 INFO L134 LiptonReduction]: Checked pairs total: 98159 [2023-08-30 18:13:25,933 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-08-30 18:13:25,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 18:13:25,935 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;@5481822, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:13:25,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 18:13:25,940 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2023-08-30 18:13:25,941 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:13:25,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:13:25,941 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 18:13:25,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 18:13:25,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:13:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1792580423, now seen corresponding path program 1 times [2023-08-30 18:13:25,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:13:25,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141349075] [2023-08-30 18:13:25,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:13:25,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:13:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 18:13:25,997 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 18:13:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 18:13:26,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 18:13:26,056 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 18:13:26,056 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-30 18:13:26,056 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 18:13:26,057 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 18:13:26,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 18:13:26,057 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 18:13:26,062 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-30 18:13:26,062 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 18:13:26,063 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 18:13:26,148 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-30 18:13:26,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 565 transitions, 1220 flow [2023-08-30 18:13:27,351 INFO L130 PetriNetUnfolder]: 1130/5483 cut-off events. [2023-08-30 18:13:27,351 INFO L131 PetriNetUnfolder]: For 602/702 co-relation queries the response was YES. [2023-08-30 18:13:27,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6157 conditions, 5483 events. 1130/5483 cut-off events. For 602/702 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 50335 event pairs, 22 based on Foata normal form. 0/4621 useless extension candidates. Maximal degree in co-relation 3440. Up to 192 conditions per place. [2023-08-30 18:13:27,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 565 transitions, 1220 flow [2023-08-30 18:13:27,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 493 places, 564 transitions, 1214 flow [2023-08-30 18:13:27,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:13:27,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 493 places, 564 transitions, 1214 flow [2023-08-30 18:13:27,572 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 493 places, 564 transitions, 1214 flow [2023-08-30 18:13:27,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 493 places, 564 transitions, 1214 flow [2023-08-30 18:13:28,477 INFO L130 PetriNetUnfolder]: 1130/5482 cut-off events. [2023-08-30 18:13:28,478 INFO L131 PetriNetUnfolder]: For 601/688 co-relation queries the response was YES. [2023-08-30 18:13:28,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6154 conditions, 5482 events. 1130/5482 cut-off events. For 601/688 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 50280 event pairs, 22 based on Foata normal form. 0/4620 useless extension candidates. Maximal degree in co-relation 3440. Up to 192 conditions per place. [2023-08-30 18:13:28,918 INFO L119 LiptonReduction]: Number of co-enabled transitions 192944 [2023-08-30 18:13:43,534 INFO L134 LiptonReduction]: Checked pairs total: 407330 [2023-08-30 18:13:43,534 INFO L136 LiptonReduction]: Total number of compositions: 427 [2023-08-30 18:13:43,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:13:43,537 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;@5481822, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:13:43,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 18:13:43,547 INFO L130 PetriNetUnfolder]: 23/147 cut-off events. [2023-08-30 18:13:43,547 INFO L131 PetriNetUnfolder]: For 13/19 co-relation queries the response was YES. [2023-08-30 18:13:43,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:13:43,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:13:43,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-30 18:13:43,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:13:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash 567540882, now seen corresponding path program 1 times [2023-08-30 18:13:43,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:13:43,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138199657] [2023-08-30 18:13:43,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:13:43,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:13:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:13:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:13:43,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:13:43,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138199657] [2023-08-30 18:13:43,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138199657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:13:43,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:13:43,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 18:13:43,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750244188] [2023-08-30 18:13:43,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:13:43,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:13:43,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:13:43,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:13:43,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 18:13:43,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 479 out of 992 [2023-08-30 18:13:43,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 203 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 482.0) internal successors, (1446), 3 states have internal predecessors, (1446), 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) [2023-08-30 18:13:43,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:13:43,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 479 of 992 [2023-08-30 18:13:43,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand