/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:29:13,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:29:13,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:29:13,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:29:13,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:29:13,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:29:13,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:29:13,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:29:13,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:29:13,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:29:13,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:29:13,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:29:13,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:29:13,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:29:13,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:29:13,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:29:13,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:29:13,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:29:13,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:29:13,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:29:13,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:29:13,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:29:13,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:29:13,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:29:13,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 01:29:13,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 01:29:13,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 01:29:13,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 01:29:13,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 01:29:13,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 01:29:13,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 01:29:13,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 01:29:13,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 01:29:13,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 01:29:13,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 01:29:13,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 01:29:13,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 01:29:13,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 01:29:13,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:29:13,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:29:13,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:29:13,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 01:29:13,284 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:29:13,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:29:13,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:29:13,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:29:13,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:29:13,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:29:13,286 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:29:13,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:29:13,286 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:29:13,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:29:13,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:29:13,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:29:13,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:29:13,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:29:13,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:29:13,288 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:29:13,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:29:13,288 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:29:13,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:29:13,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:29:13,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:29:13,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:29:13,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:29:13,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:29:13,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:29:13,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:29:13,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:29:13,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:29:13,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:29:13,290 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:29:13,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:29:13,290 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:29:13,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:29:13,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:29:13,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:29:13,510 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:29:13,511 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:29:13,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-01-28 01:29:14,600 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:29:14,823 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:29:14,824 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-01-28 01:29:14,833 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56aefd71d/e38d0469cd64442eb45bffcb0fd7ec87/FLAGd34ca9136 [2023-01-28 01:29:14,844 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56aefd71d/e38d0469cd64442eb45bffcb0fd7ec87 [2023-01-28 01:29:14,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:29:14,847 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:29:14,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:29:14,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:29:14,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:29:14,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:29:14" (1/1) ... [2023-01-28 01:29:14,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ece57e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:14, skipping insertion in model container [2023-01-28 01:29:14,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:29:14" (1/1) ... [2023-01-28 01:29:14,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:29:14,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:29:15,175 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_02-simple_racefree.i[30176,30189] [2023-01-28 01:29:15,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:29:15,211 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:29:15,238 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_02-simple_racefree.i[30176,30189] [2023-01-28 01:29:15,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:29:15,300 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:29:15,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15 WrapperNode [2023-01-28 01:29:15,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:29:15,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:29:15,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:29:15,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:29:15,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,350 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-01-28 01:29:15,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:29:15,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:29:15,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:29:15,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:29:15,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,383 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:29:15,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:29:15,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:29:15,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:29:15,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (1/1) ... [2023-01-28 01:29:15,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:29:15,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:29:15,417 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) [2023-01-28 01:29:15,424 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 [2023-01-28 01:29:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-28 01:29:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-28 01:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:29:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:29:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:29:15,449 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 01:29:15,576 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:29:15,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:29:15,787 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:29:15,792 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:29:15,793 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-01-28 01:29:15,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:29:15 BoogieIcfgContainer [2023-01-28 01:29:15,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:29:15,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:29:15,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:29:15,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:29:15,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:29:14" (1/3) ... [2023-01-28 01:29:15,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5607b319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:29:15, skipping insertion in model container [2023-01-28 01:29:15,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:29:15" (2/3) ... [2023-01-28 01:29:15,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5607b319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:29:15, skipping insertion in model container [2023-01-28 01:29:15,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:29:15" (3/3) ... [2023-01-28 01:29:15,801 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2023-01-28 01:29:15,814 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:29:15,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 01:29:15,814 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:29:15,854 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-28 01:29:15,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 108 transitions, 224 flow [2023-01-28 01:29:15,928 INFO L130 PetriNetUnfolder]: 17/141 cut-off events. [2023-01-28 01:29:15,928 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 01:29:15,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 141 events. 17/141 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 302 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-01-28 01:29:15,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 108 transitions, 224 flow [2023-01-28 01:29:15,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 103 transitions, 211 flow [2023-01-28 01:29:15,941 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:15,954 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 103 transitions, 211 flow [2023-01-28 01:29:15,962 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 103 transitions, 211 flow [2023-01-28 01:29:15,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 103 transitions, 211 flow [2023-01-28 01:29:15,987 INFO L130 PetriNetUnfolder]: 16/136 cut-off events. [2023-01-28 01:29:15,988 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:29:15,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 16/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 287 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-01-28 01:29:15,990 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-01-28 01:29:18,446 INFO L134 LiptonReduction]: Checked pairs total: 3620 [2023-01-28 01:29:18,446 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-01-28 01:29:18,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:18,463 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:18,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:18,467 INFO L130 PetriNetUnfolder]: 2/20 cut-off events. [2023-01-28 01:29:18,467 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:29:18,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:18,468 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:29:18,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:18,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash -601168239, now seen corresponding path program 1 times [2023-01-28 01:29:18,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:18,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91210414] [2023-01-28 01:29:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:18,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:18,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:18,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:18,609 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:18,610 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:18,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:29:18,612 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:18,614 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:18,615 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:18,615 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:29:18,633 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 01:29:18,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 138 transitions, 294 flow [2023-01-28 01:29:18,691 INFO L130 PetriNetUnfolder]: 31/228 cut-off events. [2023-01-28 01:29:18,691 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:29:18,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 228 events. 31/228 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2023-01-28 01:29:18,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 138 transitions, 294 flow [2023-01-28 01:29:18,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 138 transitions, 294 flow [2023-01-28 01:29:18,698 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:18,698 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 138 transitions, 294 flow [2023-01-28 01:29:18,699 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 138 transitions, 294 flow [2023-01-28 01:29:18,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 138 transitions, 294 flow [2023-01-28 01:29:18,741 INFO L130 PetriNetUnfolder]: 31/228 cut-off events. [2023-01-28 01:29:18,741 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-01-28 01:29:18,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 228 events. 31/228 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2023-01-28 01:29:18,749 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-01-28 01:29:21,124 INFO L134 LiptonReduction]: Checked pairs total: 17421 [2023-01-28 01:29:21,124 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-01-28 01:29:21,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:21,127 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:21,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:21,132 INFO L130 PetriNetUnfolder]: 12/57 cut-off events. [2023-01-28 01:29:21,132 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 01:29:21,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:21,132 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:29:21,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:21,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1661799328, now seen corresponding path program 1 times [2023-01-28 01:29:21,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:21,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839282529] [2023-01-28 01:29:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:21,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:21,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:21,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:21,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:21,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:21,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:29:21,207 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:21,207 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:21,208 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:21,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:29:21,239 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 01:29:21,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 168 transitions, 366 flow [2023-01-28 01:29:21,270 INFO L130 PetriNetUnfolder]: 50/346 cut-off events. [2023-01-28 01:29:21,270 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:29:21,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 346 events. 50/346 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1041 event pairs, 1 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 236. Up to 16 conditions per place. [2023-01-28 01:29:21,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 168 transitions, 366 flow [2023-01-28 01:29:21,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 168 transitions, 366 flow [2023-01-28 01:29:21,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:21,274 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 168 transitions, 366 flow [2023-01-28 01:29:21,275 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 168 transitions, 366 flow [2023-01-28 01:29:21,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 168 transitions, 366 flow [2023-01-28 01:29:21,304 INFO L130 PetriNetUnfolder]: 50/346 cut-off events. [2023-01-28 01:29:21,304 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-28 01:29:21,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 346 events. 50/346 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1041 event pairs, 1 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 236. Up to 16 conditions per place. [2023-01-28 01:29:21,314 INFO L119 LiptonReduction]: Number of co-enabled transitions 12432 [2023-01-28 01:29:23,665 INFO L134 LiptonReduction]: Checked pairs total: 36170 [2023-01-28 01:29:23,665 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-01-28 01:29:23,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:23,668 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:23,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:23,674 INFO L130 PetriNetUnfolder]: 21/92 cut-off events. [2023-01-28 01:29:23,674 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 01:29:23,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:23,674 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:29:23,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:23,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:23,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2088555563, now seen corresponding path program 1 times [2023-01-28 01:29:23,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:23,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310603389] [2023-01-28 01:29:23,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:23,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:23,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:23,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:23,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:23,759 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:23,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:29:23,760 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:23,760 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:23,760 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:23,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:29:23,785 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:29:23,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 198 transitions, 440 flow [2023-01-28 01:29:23,839 INFO L130 PetriNetUnfolder]: 81/528 cut-off events. [2023-01-28 01:29:23,839 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:29:23,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 528 events. 81/528 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1873 event pairs, 6 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 366. Up to 32 conditions per place. [2023-01-28 01:29:23,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 198 transitions, 440 flow [2023-01-28 01:29:23,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 198 transitions, 440 flow [2023-01-28 01:29:23,846 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:23,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 198 transitions, 440 flow [2023-01-28 01:29:23,846 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 198 transitions, 440 flow [2023-01-28 01:29:23,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 198 transitions, 440 flow [2023-01-28 01:29:23,895 INFO L130 PetriNetUnfolder]: 81/528 cut-off events. [2023-01-28 01:29:23,896 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-01-28 01:29:23,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 528 events. 81/528 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1873 event pairs, 6 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 366. Up to 32 conditions per place. [2023-01-28 01:29:23,913 INFO L119 LiptonReduction]: Number of co-enabled transitions 20048 [2023-01-28 01:29:26,260 INFO L134 LiptonReduction]: Checked pairs total: 56129 [2023-01-28 01:29:26,260 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-01-28 01:29:26,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:26,263 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:26,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:26,273 INFO L130 PetriNetUnfolder]: 33/136 cut-off events. [2023-01-28 01:29:26,273 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 01:29:26,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:26,273 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:26,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:26,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash 273609228, now seen corresponding path program 1 times [2023-01-28 01:29:26,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:26,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294334738] [2023-01-28 01:29:26,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:26,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:26,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:26,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:26,317 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:26,317 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:26,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:29:26,318 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:26,318 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:26,318 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:26,318 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:29:26,338 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 01:29:26,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 228 transitions, 516 flow [2023-01-28 01:29:26,487 INFO L130 PetriNetUnfolder]: 140/842 cut-off events. [2023-01-28 01:29:26,487 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:29:26,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 842 events. 140/842 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3587 event pairs, 23 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 573. Up to 80 conditions per place. [2023-01-28 01:29:26,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 228 transitions, 516 flow [2023-01-28 01:29:26,500 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 228 transitions, 516 flow [2023-01-28 01:29:26,501 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:26,501 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 228 transitions, 516 flow [2023-01-28 01:29:26,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 228 transitions, 516 flow [2023-01-28 01:29:26,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 228 transitions, 516 flow [2023-01-28 01:29:26,631 INFO L130 PetriNetUnfolder]: 140/842 cut-off events. [2023-01-28 01:29:26,631 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-01-28 01:29:26,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 842 events. 140/842 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3587 event pairs, 23 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 573. Up to 80 conditions per place. [2023-01-28 01:29:26,659 INFO L119 LiptonReduction]: Number of co-enabled transitions 29400 [2023-01-28 01:29:29,123 INFO L134 LiptonReduction]: Checked pairs total: 84497 [2023-01-28 01:29:29,124 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-01-28 01:29:29,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:29,126 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:29,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:29,139 INFO L130 PetriNetUnfolder]: 43/179 cut-off events. [2023-01-28 01:29:29,139 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-01-28 01:29:29,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:29,139 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:29,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:29,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:29,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1963524166, now seen corresponding path program 1 times [2023-01-28 01:29:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:29,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322255074] [2023-01-28 01:29:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:29,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:29,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:29,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:29,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:29,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:29,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:29:29,206 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:29,207 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:29,207 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:29,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:29:29,236 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-01-28 01:29:29,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 258 transitions, 594 flow [2023-01-28 01:29:29,441 INFO L130 PetriNetUnfolder]: 263/1428 cut-off events. [2023-01-28 01:29:29,441 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:29:29,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 1428 events. 263/1428 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7569 event pairs, 72 based on Foata normal form. 0/1222 useless extension candidates. Maximal degree in co-relation 941. Up to 192 conditions per place. [2023-01-28 01:29:29,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 258 transitions, 594 flow [2023-01-28 01:29:29,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 258 transitions, 594 flow [2023-01-28 01:29:29,474 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:29,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 258 transitions, 594 flow [2023-01-28 01:29:29,474 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 258 transitions, 594 flow [2023-01-28 01:29:29,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 258 transitions, 594 flow [2023-01-28 01:29:29,650 INFO L130 PetriNetUnfolder]: 263/1428 cut-off events. [2023-01-28 01:29:29,653 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-01-28 01:29:29,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 1428 events. 263/1428 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7569 event pairs, 72 based on Foata normal form. 0/1222 useless extension candidates. Maximal degree in co-relation 941. Up to 192 conditions per place. [2023-01-28 01:29:29,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 40488 [2023-01-28 01:29:32,434 INFO L134 LiptonReduction]: Checked pairs total: 131767 [2023-01-28 01:29:32,434 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-01-28 01:29:32,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:32,436 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:32,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:32,453 INFO L130 PetriNetUnfolder]: 64/246 cut-off events. [2023-01-28 01:29:32,453 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 01:29:32,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:32,453 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:32,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:32,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:32,454 INFO L85 PathProgramCache]: Analyzing trace with hash 644110489, now seen corresponding path program 1 times [2023-01-28 01:29:32,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:32,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069448201] [2023-01-28 01:29:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:32,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:32,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:32,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:32,492 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:32,492 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:32,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:29:32,492 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:32,493 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:32,493 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:32,493 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:29:32,513 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-01-28 01:29:32,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 288 transitions, 674 flow [2023-01-28 01:29:32,897 INFO L130 PetriNetUnfolder]: 530/2574 cut-off events. [2023-01-28 01:29:32,897 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:29:32,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3072 conditions, 2574 events. 530/2574 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17075 event pairs, 201 based on Foata normal form. 0/2228 useless extension candidates. Maximal degree in co-relation 1646. Up to 448 conditions per place. [2023-01-28 01:29:32,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 288 transitions, 674 flow [2023-01-28 01:29:32,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 288 transitions, 674 flow [2023-01-28 01:29:32,968 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:32,969 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 288 transitions, 674 flow [2023-01-28 01:29:32,969 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 288 transitions, 674 flow [2023-01-28 01:29:32,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 288 transitions, 674 flow [2023-01-28 01:29:33,339 INFO L130 PetriNetUnfolder]: 530/2574 cut-off events. [2023-01-28 01:29:33,340 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-01-28 01:29:33,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3072 conditions, 2574 events. 530/2574 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17075 event pairs, 201 based on Foata normal form. 0/2228 useless extension candidates. Maximal degree in co-relation 1646. Up to 448 conditions per place. [2023-01-28 01:29:33,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 53312 [2023-01-28 01:29:35,934 INFO L134 LiptonReduction]: Checked pairs total: 172308 [2023-01-28 01:29:35,934 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-01-28 01:29:35,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:35,936 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:35,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:35,958 INFO L130 PetriNetUnfolder]: 76/310 cut-off events. [2023-01-28 01:29:35,958 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-28 01:29:35,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:35,958 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:35,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:35,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1701479946, now seen corresponding path program 1 times [2023-01-28 01:29:35,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:35,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473097865] [2023-01-28 01:29:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:35,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:35,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:36,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:36,001 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:36,001 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:36,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 01:29:36,001 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:36,002 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:36,002 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:36,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-01-28 01:29:36,025 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:29:36,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 318 transitions, 756 flow [2023-01-28 01:29:36,832 INFO L130 PetriNetUnfolder]: 1117/4872 cut-off events. [2023-01-28 01:29:36,832 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:29:36,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 4872 events. 1117/4872 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38095 event pairs, 522 based on Foata normal form. 0/4258 useless extension candidates. Maximal degree in co-relation 3056. Up to 1024 conditions per place. [2023-01-28 01:29:36,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 318 transitions, 756 flow [2023-01-28 01:29:36,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 318 transitions, 756 flow [2023-01-28 01:29:36,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:36,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 318 transitions, 756 flow [2023-01-28 01:29:36,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 318 transitions, 756 flow [2023-01-28 01:29:36,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 318 transitions, 756 flow [2023-01-28 01:29:37,749 INFO L130 PetriNetUnfolder]: 1117/4872 cut-off events. [2023-01-28 01:29:37,749 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-01-28 01:29:37,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 4872 events. 1117/4872 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38095 event pairs, 522 based on Foata normal form. 0/4258 useless extension candidates. Maximal degree in co-relation 3056. Up to 1024 conditions per place. [2023-01-28 01:29:38,019 INFO L119 LiptonReduction]: Number of co-enabled transitions 67872 [2023-01-28 01:29:41,025 INFO L134 LiptonReduction]: Checked pairs total: 226502 [2023-01-28 01:29:41,025 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-01-28 01:29:41,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:41,028 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:41,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:41,059 INFO L130 PetriNetUnfolder]: 115/426 cut-off events. [2023-01-28 01:29:41,059 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-01-28 01:29:41,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:41,059 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:41,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:41,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:41,060 INFO L85 PathProgramCache]: Analyzing trace with hash 507352339, now seen corresponding path program 1 times [2023-01-28 01:29:41,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:41,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683731045] [2023-01-28 01:29:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:41,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:41,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:41,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:41,122 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:41,122 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:41,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 01:29:41,123 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:41,124 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:41,124 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:41,124 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-01-28 01:29:41,195 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-01-28 01:29:41,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 348 transitions, 840 flow [2023-01-28 01:29:43,168 INFO L130 PetriNetUnfolder]: 2408/9538 cut-off events. [2023-01-28 01:29:43,169 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:29:43,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 9538 events. 2408/9538 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86119 event pairs, 1291 based on Foata normal form. 0/8400 useless extension candidates. Maximal degree in co-relation 5939. Up to 2304 conditions per place. [2023-01-28 01:29:43,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 348 transitions, 840 flow [2023-01-28 01:29:43,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 348 transitions, 840 flow [2023-01-28 01:29:43,433 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:43,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 299 places, 348 transitions, 840 flow [2023-01-28 01:29:43,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 299 places, 348 transitions, 840 flow [2023-01-28 01:29:43,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 348 transitions, 840 flow [2023-01-28 01:29:45,089 INFO L130 PetriNetUnfolder]: 2408/9538 cut-off events. [2023-01-28 01:29:45,089 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-01-28 01:29:45,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 9538 events. 2408/9538 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86119 event pairs, 1291 based on Foata normal form. 0/8400 useless extension candidates. Maximal degree in co-relation 5939. Up to 2304 conditions per place. [2023-01-28 01:29:45,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 84168 [2023-01-28 01:29:48,412 INFO L134 LiptonReduction]: Checked pairs total: 251928 [2023-01-28 01:29:48,413 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-01-28 01:29:48,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:48,415 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:48,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:48,463 INFO L130 PetriNetUnfolder]: 159/566 cut-off events. [2023-01-28 01:29:48,463 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-01-28 01:29:48,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:48,464 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:48,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:48,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:48,464 INFO L85 PathProgramCache]: Analyzing trace with hash 227014318, now seen corresponding path program 1 times [2023-01-28 01:29:48,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:48,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254979607] [2023-01-28 01:29:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:48,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:48,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:29:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:48,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:29:48,499 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:29:48,499 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:29:48,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 01:29:48,499 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:29:48,500 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:29:48,500 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:29:48,500 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-01-28 01:29:48,525 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-01-28 01:29:48,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 378 transitions, 926 flow [2023-01-28 01:29:52,056 INFO L130 PetriNetUnfolder]: 5235/19068 cut-off events. [2023-01-28 01:29:52,056 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:29:52,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24274 conditions, 19068 events. 5235/19068 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 195320 event pairs, 3084 based on Foata normal form. 0/16894 useless extension candidates. Maximal degree in co-relation 11895. Up to 5120 conditions per place. [2023-01-28 01:29:52,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 378 transitions, 926 flow [2023-01-28 01:29:52,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 378 transitions, 926 flow [2023-01-28 01:29:52,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:29:52,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 378 transitions, 926 flow [2023-01-28 01:29:52,562 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 378 transitions, 926 flow [2023-01-28 01:29:52,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 378 transitions, 926 flow [2023-01-28 01:29:56,025 INFO L130 PetriNetUnfolder]: 5235/19068 cut-off events. [2023-01-28 01:29:56,026 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-01-28 01:29:56,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24274 conditions, 19068 events. 5235/19068 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 195320 event pairs, 3084 based on Foata normal form. 0/16894 useless extension candidates. Maximal degree in co-relation 11895. Up to 5120 conditions per place. [2023-01-28 01:29:57,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 102200 [2023-01-28 01:29:59,885 INFO L134 LiptonReduction]: Checked pairs total: 313098 [2023-01-28 01:29:59,885 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-01-28 01:29:59,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:29:59,886 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:29:59,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:29:59,937 INFO L130 PetriNetUnfolder]: 234/799 cut-off events. [2023-01-28 01:29:59,938 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-01-28 01:29:59,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:29:59,938 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:29:59,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:29:59,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:29:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1704156933, now seen corresponding path program 1 times [2023-01-28 01:29:59,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:29:59,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297374951] [2023-01-28 01:29:59,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:29:59,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:29:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:29:59,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:30:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:30:00,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:30:00,015 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:30:00,015 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:30:00,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 01:30:00,016 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:30:00,016 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:30:00,016 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:30:00,016 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-01-28 01:30:00,042 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-01-28 01:30:00,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 408 transitions, 1014 flow [2023-01-28 01:30:08,276 INFO L130 PetriNetUnfolder]: 11390/38582 cut-off events. [2023-01-28 01:30:08,276 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:30:08,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49946 conditions, 38582 events. 11390/38582 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 443949 event pairs, 7181 based on Foata normal form. 0/34348 useless extension candidates. Maximal degree in co-relation 24252. Up to 11264 conditions per place. [2023-01-28 01:30:08,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 408 transitions, 1014 flow [2023-01-28 01:30:09,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 408 transitions, 1014 flow [2023-01-28 01:30:09,236 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:30:09,236 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 408 transitions, 1014 flow [2023-01-28 01:30:09,236 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 408 transitions, 1014 flow [2023-01-28 01:30:09,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 408 transitions, 1014 flow [2023-01-28 01:30:17,472 INFO L130 PetriNetUnfolder]: 11390/38582 cut-off events. [2023-01-28 01:30:17,472 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-01-28 01:30:17,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49946 conditions, 38582 events. 11390/38582 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 443949 event pairs, 7181 based on Foata normal form. 0/34348 useless extension candidates. Maximal degree in co-relation 24252. Up to 11264 conditions per place. [2023-01-28 01:30:19,429 INFO L119 LiptonReduction]: Number of co-enabled transitions 121968 [2023-01-28 01:30:22,393 INFO L134 LiptonReduction]: Checked pairs total: 417564 [2023-01-28 01:30:22,393 INFO L136 LiptonReduction]: Total number of compositions: 235 [2023-01-28 01:30:22,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:30:22,394 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:30:22,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:30:22,522 INFO L130 PetriNetUnfolder]: 349/1092 cut-off events. [2023-01-28 01:30:22,523 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-01-28 01:30:22,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:30:22,523 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:30:22,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:30:22,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:30:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1773584118, now seen corresponding path program 1 times [2023-01-28 01:30:22,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:30:22,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380166710] [2023-01-28 01:30:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:30:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:30:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:30:22,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:30:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:30:22,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:30:22,562 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:30:22,562 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:30:22,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 01:30:22,562 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:30:22,562 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:30:22,563 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:30:22,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-01-28 01:30:22,592 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:30:22,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 438 transitions, 1104 flow [2023-01-28 01:30:40,270 INFO L130 PetriNetUnfolder]: 24713/78576 cut-off events. [2023-01-28 01:30:40,270 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:30:42,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103267 conditions, 78576 events. 24713/78576 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 974700 event pairs, 16398 based on Foata normal form. 0/70234 useless extension candidates. Maximal degree in co-relation 49922. Up to 24576 conditions per place. [2023-01-28 01:30:42,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 438 transitions, 1104 flow [2023-01-28 01:30:43,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 438 transitions, 1104 flow [2023-01-28 01:30:43,262 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:30:43,262 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 438 transitions, 1104 flow [2023-01-28 01:30:43,262 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 438 transitions, 1104 flow [2023-01-28 01:30:43,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 438 transitions, 1104 flow [2023-01-28 01:31:01,448 INFO L130 PetriNetUnfolder]: 24713/78576 cut-off events. [2023-01-28 01:31:01,448 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-01-28 01:31:04,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103267 conditions, 78576 events. 24713/78576 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 974700 event pairs, 16398 based on Foata normal form. 0/70234 useless extension candidates. Maximal degree in co-relation 49922. Up to 24576 conditions per place. [2023-01-28 01:31:08,904 INFO L119 LiptonReduction]: Number of co-enabled transitions 143472 [2023-01-28 01:31:12,038 INFO L134 LiptonReduction]: Checked pairs total: 495871 [2023-01-28 01:31:12,039 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-01-28 01:31:12,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:12,040 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:12,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:31:12,168 INFO L130 PetriNetUnfolder]: 560/1628 cut-off events. [2023-01-28 01:31:12,168 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-01-28 01:31:12,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:12,169 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:31:12,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:12,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:12,169 INFO L85 PathProgramCache]: Analyzing trace with hash -932400929, now seen corresponding path program 1 times [2023-01-28 01:31:12,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:12,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10267879] [2023-01-28 01:31:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:12,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:12,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:12,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:12,216 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:12,216 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:31:12,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 01:31:12,217 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:12,219 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:31:12,219 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:12,219 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-01-28 01:31:12,251 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-01-28 01:31:12,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 468 transitions, 1196 flow [2023-01-28 01:31:52,603 INFO L130 PetriNetUnfolder]: 53396/160554 cut-off events. [2023-01-28 01:31:52,603 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:31:58,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213933 conditions, 160554 events. 53396/160554 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 2176460 event pairs, 36879 based on Foata normal form. 0/144008 useless extension candidates. Maximal degree in co-relation 103241. Up to 53248 conditions per place. [2023-01-28 01:31:58,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 399 places, 468 transitions, 1196 flow [2023-01-28 01:32:01,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 468 transitions, 1196 flow [2023-01-28 01:32:01,810 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:32:01,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 468 transitions, 1196 flow [2023-01-28 01:32:01,810 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 468 transitions, 1196 flow [2023-01-28 01:32:01,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 468 transitions, 1196 flow [2023-01-28 01:32:43,756 INFO L130 PetriNetUnfolder]: 53396/160554 cut-off events. [2023-01-28 01:32:43,756 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-01-28 01:32:49,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213933 conditions, 160554 events. 53396/160554 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 2176460 event pairs, 36879 based on Foata normal form. 0/144008 useless extension candidates. Maximal degree in co-relation 103241. Up to 53248 conditions per place. [2023-01-28 01:33:05,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 166712 [2023-01-28 01:33:08,390 INFO L134 LiptonReduction]: Checked pairs total: 575441 [2023-01-28 01:33:08,391 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-01-28 01:33:08,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:33:08,392 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=false, 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;@6a1d4e3f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:33:08,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-28 01:33:08,641 INFO L130 PetriNetUnfolder]: 928/2481 cut-off events. [2023-01-28 01:33:08,641 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-01-28 01:33:08,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:33:08,641 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:33:08,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:33:08,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:33:08,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1908472988, now seen corresponding path program 1 times [2023-01-28 01:33:08,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:33:08,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033355722] [2023-01-28 01:33:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:33:08,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:33:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:33:08,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:33:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:33:08,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:33:08,685 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:33:08,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-01-28 01:33:08,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 01:33:08,685 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:33:08,686 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-01-28 01:33:08,687 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:33:08,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-01-28 01:33:08,722 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-01-28 01:33:08,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 424 places, 498 transitions, 1290 flow