./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:02:06,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:02:06,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:02:06,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:02:06,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:02:06,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:02:06,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:02:06,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:02:06,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:02:06,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:02:06,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:02:06,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:02:06,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:02:06,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:02:06,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:02:06,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:02:06,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:02:06,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:02:06,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:02:06,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:02:06,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:02:06,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:02:06,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:02:06,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:02:06,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:02:06,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:02:06,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:02:06,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:02:06,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:02:06,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:02:06,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:02:06,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:02:06,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:02:06,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:02:06,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:02:06,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:02:06,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:02:06,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:02:06,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:02:06,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:02:06,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:02:06,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:02:06,139 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:02:06,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:02:06,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:02:06,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:02:06,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:02:06,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:02:06,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:02:06,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:02:06,142 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:02:06,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:02:06,143 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:02:06,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:02:06,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:02:06,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:02:06,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:02:06,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:02:06,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:02:06,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:02:06,144 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:02:06,144 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:02:06,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:02:06,144 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:02:06,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:02:06,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:02:06,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:02:06,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:02:06,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:02:06,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:02:06,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:02:06,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:02:06,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:02:06,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:02:06,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:02:06,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:02:06,147 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:02:06,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:02:06,147 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:02:06,147 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:02:06,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:02:06,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:02:06,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:02:06,441 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:02:06,441 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:02:06,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-09-01 07:02:07,485 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:02:07,813 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:02:07,814 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-09-01 07:02:07,836 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03be29aae/6425b7c63bd64499b5fe599dbcf635e0/FLAG1750671ad [2023-09-01 07:02:07,849 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03be29aae/6425b7c63bd64499b5fe599dbcf635e0 [2023-09-01 07:02:07,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:02:07,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:02:07,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:02:07,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:02:07,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:02:07,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:02:07" (1/1) ... [2023-09-01 07:02:07,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474a4851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:07, skipping insertion in model container [2023-09-01 07:02:07,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:02:07" (1/1) ... [2023-09-01 07:02:07,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:02:07,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:02:08,313 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2023-09-01 07:02:08,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:02:08,374 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:02:08,402 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2023-09-01 07:02:08,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:02:08,495 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:02:08,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08 WrapperNode [2023-09-01 07:02:08,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:02:08,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:02:08,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:02:08,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:02:08,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,566 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 364 [2023-09-01 07:02:08,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:02:08,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:02:08,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:02:08,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:02:08,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,614 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:02:08,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:02:08,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:02:08,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:02:08,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (1/1) ... [2023-09-01 07:02:08,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:02:08,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:02:08,649 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) [2023-09-01 07:02:08,657 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 [2023-09-01 07:02:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:02:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 07:02:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-09-01 07:02:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-09-01 07:02:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:02:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:02:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-09-01 07:02:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-09-01 07:02:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:02:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 07:02:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:02:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:02:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 07:02:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-09-01 07:02:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-09-01 07:02:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:02:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:02:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:02:08,693 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:02:08,857 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:02:08,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:02:09,328 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:02:09,336 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:02:09,336 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-09-01 07:02:09,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:02:09 BoogieIcfgContainer [2023-09-01 07:02:09,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:02:09,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:02:09,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:02:09,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:02:09,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:02:07" (1/3) ... [2023-09-01 07:02:09,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f22ca2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:02:09, skipping insertion in model container [2023-09-01 07:02:09,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:02:08" (2/3) ... [2023-09-01 07:02:09,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f22ca2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:02:09, skipping insertion in model container [2023-09-01 07:02:09,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:02:09" (3/3) ... [2023-09-01 07:02:09,342 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-09-01 07:02:09,347 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:02:09,353 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:02:09,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-09-01 07:02:09,353 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:02:09,461 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 07:02:09,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 388 transitions, 818 flow [2023-09-01 07:02:09,766 INFO L130 PetriNetUnfolder]: 164/1225 cut-off events. [2023-09-01 07:02:09,767 INFO L131 PetriNetUnfolder]: For 36/57 co-relation queries the response was YES. [2023-09-01 07:02:09,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 1225 events. 164/1225 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7898 event pairs, 0 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 626. Up to 16 conditions per place. [2023-09-01 07:02:09,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 388 transitions, 818 flow [2023-09-01 07:02:09,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 348 places, 386 transitions, 814 flow [2023-09-01 07:02:09,797 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:02:09,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 348 places, 386 transitions, 814 flow [2023-09-01 07:02:09,813 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 348 places, 386 transitions, 814 flow [2023-09-01 07:02:09,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 386 transitions, 814 flow [2023-09-01 07:02:09,978 INFO L130 PetriNetUnfolder]: 164/1223 cut-off events. [2023-09-01 07:02:09,978 INFO L131 PetriNetUnfolder]: For 36/57 co-relation queries the response was YES. [2023-09-01 07:02:09,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284 conditions, 1223 events. 164/1223 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7862 event pairs, 0 based on Foata normal form. 0/979 useless extension candidates. Maximal degree in co-relation 626. Up to 16 conditions per place. [2023-09-01 07:02:10,035 INFO L119 LiptonReduction]: Number of co-enabled transitions 64244 [2023-09-01 07:02:23,808 INFO L134 LiptonReduction]: Checked pairs total: 123625 [2023-09-01 07:02:23,809 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-09-01 07:02:23,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:02:23,822 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1592f132, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:02:23,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 07:02:23,826 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2023-09-01 07:02:23,826 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:02:23,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:02:23,827 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 07:02:23,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 07:02:23,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:02:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1768868646, now seen corresponding path program 1 times [2023-09-01 07:02:23,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:02:23,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902033304] [2023-09-01 07:02:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:02:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:02:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:23,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:02:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:23,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:02:23,986 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:02:23,987 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 07:02:23,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 07:02:23,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 07:02:23,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:02:23,989 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:02:23,991 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 07:02:23,991 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:02:23,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 07:02:24,043 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-09-01 07:02:24,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 617 transitions, 1324 flow [2023-09-01 07:02:26,273 INFO L130 PetriNetUnfolder]: 1130/6511 cut-off events. [2023-09-01 07:02:26,288 INFO L131 PetriNetUnfolder]: For 602/683 co-relation queries the response was YES. [2023-09-01 07:02:26,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7185 conditions, 6511 events. 1130/6511 cut-off events. For 602/683 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 62278 event pairs, 22 based on Foata normal form. 0/5163 useless extension candidates. Maximal degree in co-relation 3992. Up to 192 conditions per place. [2023-09-01 07:02:26,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 617 transitions, 1324 flow [2023-09-01 07:02:26,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 544 places, 615 transitions, 1320 flow [2023-09-01 07:02:26,644 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:02:26,644 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 544 places, 615 transitions, 1320 flow [2023-09-01 07:02:26,645 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 544 places, 615 transitions, 1320 flow [2023-09-01 07:02:26,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 544 places, 615 transitions, 1320 flow [2023-09-01 07:02:27,960 INFO L130 PetriNetUnfolder]: 1130/6507 cut-off events. [2023-09-01 07:02:27,960 INFO L131 PetriNetUnfolder]: For 602/683 co-relation queries the response was YES. [2023-09-01 07:02:28,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7181 conditions, 6507 events. 1130/6507 cut-off events. For 602/683 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 62447 event pairs, 22 based on Foata normal form. 0/5163 useless extension candidates. Maximal degree in co-relation 3990. Up to 192 conditions per place. [2023-09-01 07:02:28,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 231508 [2023-09-01 07:02:45,165 INFO L134 LiptonReduction]: Checked pairs total: 499675 [2023-09-01 07:02:45,165 INFO L136 LiptonReduction]: Total number of compositions: 487 [2023-09-01 07:02:45,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:02:45,168 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1592f132, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:02:45,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 07:02:45,179 INFO L130 PetriNetUnfolder]: 27/175 cut-off events. [2023-09-01 07:02:45,179 INFO L131 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2023-09-01 07:02:45,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:02:45,179 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 07:02:45,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 07:02:45,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:02:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash 379621256, now seen corresponding path program 1 times [2023-09-01 07:02:45,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:02:45,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324085299] [2023-09-01 07:02:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:02:45,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:02:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:45,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:02:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:02:45,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:02:45,288 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:02:45,289 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 07:02:45,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 07:02:45,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 07:02:45,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:02:45,289 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:02:45,290 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 07:02:45,290 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:02:45,290 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 07:02:45,361 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-09-01 07:02:45,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 742 places, 846 transitions, 1836 flow [2023-09-01 07:03:00,845 INFO L130 PetriNetUnfolder]: 8984/38051 cut-off events. [2023-09-01 07:03:00,845 INFO L131 PetriNetUnfolder]: For 7059/7254 co-relation queries the response was YES. [2023-09-01 07:03:02,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45225 conditions, 38051 events. 8984/38051 cut-off events. For 7059/7254 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 450772 event pairs, 912 based on Foata normal form. 0/30479 useless extension candidates. Maximal degree in co-relation 23666. Up to 2304 conditions per place. [2023-09-01 07:03:02,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 742 places, 846 transitions, 1836 flow [2023-09-01 07:03:03,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 740 places, 844 transitions, 1832 flow [2023-09-01 07:03:03,803 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:03:03,803 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 740 places, 844 transitions, 1832 flow [2023-09-01 07:03:03,803 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 740 places, 844 transitions, 1832 flow [2023-09-01 07:03:03,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 740 places, 844 transitions, 1832 flow [2023-09-01 07:03:18,407 INFO L130 PetriNetUnfolder]: 8984/38045 cut-off events. [2023-09-01 07:03:18,407 INFO L131 PetriNetUnfolder]: For 7059/7254 co-relation queries the response was YES. [2023-09-01 07:03:20,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45219 conditions, 38045 events. 8984/38045 cut-off events. For 7059/7254 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 451079 event pairs, 912 based on Foata normal form. 0/30479 useless extension candidates. Maximal degree in co-relation 23662. Up to 2304 conditions per place. [2023-09-01 07:03:24,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 501792 [2023-09-01 07:03:44,312 INFO L134 LiptonReduction]: Checked pairs total: 1130168 [2023-09-01 07:03:44,312 INFO L136 LiptonReduction]: Total number of compositions: 677 [2023-09-01 07:03:44,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 07:03:44,320 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1592f132, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:03:44,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 07:03:44,340 INFO L130 PetriNetUnfolder]: 71/369 cut-off events. [2023-09-01 07:03:44,340 INFO L131 PetriNetUnfolder]: For 49/63 co-relation queries the response was YES. [2023-09-01 07:03:44,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:03:44,341 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 07:03:44,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 07:03:44,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:03:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash -546376020, now seen corresponding path program 1 times [2023-09-01 07:03:44,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:03:44,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24541990] [2023-09-01 07:03:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:03:44,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:03:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:44,399 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 07:03:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 07:03:44,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 07:03:44,428 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 07:03:44,429 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-09-01 07:03:44,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 07:03:44,429 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 07:03:44,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:03:44,429 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 07:03:44,430 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-09-01 07:03:44,430 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 07:03:44,430 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 07:03:44,503 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-09-01 07:03:44,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 938 places, 1075 transitions, 2354 flow