./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 --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 10:43:26,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:43:26,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:43:26,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:43:26,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:43:26,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:43:26,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:43:26,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:43:26,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:43:26,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:43:26,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:43:26,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:43:26,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:43:26,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:43:26,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:43:26,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:43:26,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:43:26,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:43:26,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:43:26,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:43:26,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:43:26,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:43:26,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:43:26,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:43:26,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:43:26,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:43:26,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:43:26,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:43:26,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:43:26,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:43:26,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:43:26,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:43:26,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:43:26,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:43:26,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:43:26,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:43:26,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:43:26,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:43:26,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:43:26,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:43:26,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:43:26,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:43:26,155 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:43:26,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:43:26,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:43:26,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:43:26,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:43:26,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:43:26,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:43:26,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:43:26,158 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:43:26,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:43:26,159 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:43:26,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:43:26,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:43:26,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:43:26,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:43:26,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:43:26,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:43:26,160 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:43:26,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:43:26,160 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:43:26,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:43:26,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:43:26,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:43:26,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:43:26,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:43:26,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:43:26,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:43:26,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:43:26,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:43:26,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:43:26,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:43:26,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:43:26,162 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:43:26,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:43:26,163 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:43:26,163 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b25926fb6c7e27855d812b862643321480d6d0eb308c80224ee02bfde27516 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:43:26,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:43:26,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:43:26,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:43:26,423 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:43:26,423 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:43:26,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-09-01 10:43:27,538 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:43:27,707 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:43:27,708 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-09-01 10:43:27,735 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245a71ab4/24d83ccc00af4a74b315d0c4f4c0d565/FLAGfde60bd1f [2023-09-01 10:43:27,744 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/245a71ab4/24d83ccc00af4a74b315d0c4f4c0d565 [2023-09-01 10:43:27,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:43:27,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:43:27,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:43:27,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:43:27,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:43:27,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:43:27" (1/1) ... [2023-09-01 10:43:27,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33582517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:27, skipping insertion in model container [2023-09-01 10:43:27,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:43:27" (1/1) ... [2023-09-01 10:43:27,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:43:27,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:43:27,949 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/13-privatized_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2023-09-01 10:43:28,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:43:28,081 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:43:28,092 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/13-privatized_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2023-09-01 10:43:28,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:43:28,160 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:43:28,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28 WrapperNode [2023-09-01 10:43:28,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:43:28,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:43:28,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:43:28,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:43:28,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,208 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-09-01 10:43:28,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:43:28,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:43:28,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:43:28,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:43:28,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,238 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:43:28,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:43:28,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:43:28,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:43:28,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (1/1) ... [2023-09-01 10:43:28,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:43:28,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:43:28,288 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 10:43:28,306 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 10:43:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:43:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:43:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:43:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:43:28,317 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:43:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:43:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:43:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:43:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:43:28,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:43:28,319 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 10:43:28,441 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:43:28,442 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:43:28,558 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:43:28,564 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:43:28,564 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 10:43:28,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:43:28 BoogieIcfgContainer [2023-09-01 10:43:28,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:43:28,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:43:28,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:43:28,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:43:28,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:43:27" (1/3) ... [2023-09-01 10:43:28,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a8a308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:43:28, skipping insertion in model container [2023-09-01 10:43:28,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:43:28" (2/3) ... [2023-09-01 10:43:28,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a8a308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:43:28, skipping insertion in model container [2023-09-01 10:43:28,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:43:28" (3/3) ... [2023-09-01 10:43:28,572 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-09-01 10:43:28,578 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:43:28,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:43:28,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:43:28,594 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:43:28,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 10:43:28,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 60 transitions, 125 flow [2023-09-01 10:43:28,678 INFO L130 PetriNetUnfolder]: 1/59 cut-off events. [2023-09-01 10:43:28,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:43:28,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-09-01 10:43:28,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 60 transitions, 125 flow [2023-09-01 10:43:28,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 105 flow [2023-09-01 10:43:28,699 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:43:28,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 105 flow [2023-09-01 10:43:28,711 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 105 flow [2023-09-01 10:43:28,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 105 flow [2023-09-01 10:43:28,727 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2023-09-01 10:43:28,727 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:43:28,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 10:43:28,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 240 [2023-09-01 10:43:30,660 INFO L134 LiptonReduction]: Checked pairs total: 592 [2023-09-01 10:43:30,660 INFO L136 LiptonReduction]: Total number of compositions: 40 [2023-09-01 10:43:30,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 10:43:30,675 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;@7c5da565, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:43:30,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 10:43:30,678 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-09-01 10:43:30,678 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:43:30,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:43:30,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 10:43:30,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:43:30,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:43:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1761964991, now seen corresponding path program 1 times [2023-09-01 10:43:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:43:30,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122430853] [2023-09-01 10:43:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:43:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:43:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:43:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:43:30,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:43:30,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122430853] [2023-09-01 10:43:30,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122430853] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:43:30,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:43:30,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 10:43:30,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458303737] [2023-09-01 10:43:30,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:43:30,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:43:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:43:31,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:43:31,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:43:31,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 100 [2023-09-01 10:43:31,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 25 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:43:31,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 100 [2023-09-01 10:43:31,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:43:31,099 INFO L130 PetriNetUnfolder]: 13/40 cut-off events. [2023-09-01 10:43:31,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:43:31,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 40 events. 13/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 7 based on Foata normal form. 3/43 useless extension candidates. Maximal degree in co-relation 72. Up to 19 conditions per place. [2023-09-01 10:43:31,100 INFO L137 encePairwiseOnDemand]: 97/100 looper letters, 11 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-09-01 10:43:31,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 14 transitions, 57 flow [2023-09-01 10:43:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:43:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:43:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2023-09-01 10:43:31,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966666666666667 [2023-09-01 10:43:31,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2023-09-01 10:43:31,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2023-09-01 10:43:31,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:43:31,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2023-09-01 10:43:31,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,125 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 25 flow. Second operand 3 states and 179 transitions. [2023-09-01 10:43:31,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 14 transitions, 57 flow [2023-09-01 10:43:31,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:43:31,128 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 32 flow [2023-09-01 10:43:31,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-09-01 10:43:31,133 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 2 predicate places. [2023-09-01 10:43:31,133 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 32 flow [2023-09-01 10:43:31,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:43:31,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:43:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:43:31,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:43:31,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:43:31,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1752855910, now seen corresponding path program 1 times [2023-09-01 10:43:31,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:43:31,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527520368] [2023-09-01 10:43:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:43:31,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:43:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:43:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:43:31,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:43:31,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527520368] [2023-09-01 10:43:31,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527520368] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:43:31,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:43:31,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:43:31,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862825271] [2023-09-01 10:43:31,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:43:31,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 10:43:31,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:43:31,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 10:43:31,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 10:43:31,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-09-01 10:43:31,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:43:31,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-09-01 10:43:31,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:43:31,304 INFO L130 PetriNetUnfolder]: 6/30 cut-off events. [2023-09-01 10:43:31,304 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:43:31,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 30 events. 6/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 2 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 61. Up to 18 conditions per place. [2023-09-01 10:43:31,305 INFO L137 encePairwiseOnDemand]: 95/100 looper letters, 9 selfloop transitions, 5 changer transitions 0/15 dead transitions. [2023-09-01 10:43:31,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 70 flow [2023-09-01 10:43:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 10:43:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 10:43:31,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2023-09-01 10:43:31,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633333333333334 [2023-09-01 10:43:31,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2023-09-01 10:43:31,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2023-09-01 10:43:31,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:43:31,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2023-09-01 10:43:31,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,312 INFO L175 Difference]: Start difference. First operand has 17 places, 11 transitions, 32 flow. Second operand 3 states and 169 transitions. [2023-09-01 10:43:31,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 70 flow [2023-09-01 10:43:31,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 66 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 10:43:31,312 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 51 flow [2023-09-01 10:43:31,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-09-01 10:43:31,313 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 3 predicate places. [2023-09-01 10:43:31,313 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 51 flow [2023-09-01 10:43:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:43:31,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:43:31,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:43:31,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:43:31,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:43:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1903195232, now seen corresponding path program 2 times [2023-09-01 10:43:31,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:43:31,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654807784] [2023-09-01 10:43:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:43:31,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:43:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:43:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:43:31,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:43:31,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654807784] [2023-09-01 10:43:31,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654807784] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:43:31,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:43:31,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 10:43:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99827674] [2023-09-01 10:43:31,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:43:31,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 10:43:31,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:43:31,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 10:43:31,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 10:43:31,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 100 [2023-09-01 10:43:31,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:43:31,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 100 [2023-09-01 10:43:31,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:43:31,544 INFO L130 PetriNetUnfolder]: 4/25 cut-off events. [2023-09-01 10:43:31,544 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:43:31,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 25 events. 4/25 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 69. Up to 15 conditions per place. [2023-09-01 10:43:31,545 INFO L137 encePairwiseOnDemand]: 96/100 looper letters, 10 selfloop transitions, 4 changer transitions 1/16 dead transitions. [2023-09-01 10:43:31,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 95 flow [2023-09-01 10:43:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 10:43:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 10:43:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2023-09-01 10:43:31,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5325 [2023-09-01 10:43:31,547 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 213 transitions. [2023-09-01 10:43:31,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 213 transitions. [2023-09-01 10:43:31,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:43:31,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 213 transitions. [2023-09-01 10:43:31,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,550 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,550 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 51 flow. Second operand 4 states and 213 transitions. [2023-09-01 10:43:31,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 95 flow [2023-09-01 10:43:31,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 10:43:31,552 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 54 flow [2023-09-01 10:43:31,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-09-01 10:43:31,553 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 5 predicate places. [2023-09-01 10:43:31,553 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 54 flow [2023-09-01 10:43:31,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:43:31,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:43:31,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:43:31,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:43:31,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:43:31,554 INFO L85 PathProgramCache]: Analyzing trace with hash -414641235, now seen corresponding path program 1 times [2023-09-01 10:43:31,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:43:31,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324717034] [2023-09-01 10:43:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:43:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:43:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 10:43:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 10:43:31,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 10:43:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324717034] [2023-09-01 10:43:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324717034] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 10:43:31,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 10:43:31,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 10:43:31,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381196718] [2023-09-01 10:43:31,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 10:43:31,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 10:43:31,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 10:43:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 10:43:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 10:43:31,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 100 [2023-09-01 10:43:31,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 10:43:31,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 100 [2023-09-01 10:43:31,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 10:43:31,711 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-09-01 10:43:31,711 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 10:43:31,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-09-01 10:43:31,711 INFO L137 encePairwiseOnDemand]: 95/100 looper letters, 4 selfloop transitions, 5 changer transitions 0/11 dead transitions. [2023-09-01 10:43:31,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 11 transitions, 64 flow [2023-09-01 10:43:31,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 10:43:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 10:43:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2023-09-01 10:43:31,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2023-09-01 10:43:31,718 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 214 transitions. [2023-09-01 10:43:31,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 214 transitions. [2023-09-01 10:43:31,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 10:43:31,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 214 transitions. [2023-09-01 10:43:31,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,720 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,720 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 54 flow. Second operand 4 states and 214 transitions. [2023-09-01 10:43:31,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 11 transitions, 64 flow [2023-09-01 10:43:31,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 54 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 10:43:31,721 INFO L231 Difference]: Finished difference. Result has 20 places, 11 transitions, 46 flow [2023-09-01 10:43:31,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=20, PETRI_TRANSITIONS=11} [2023-09-01 10:43:31,722 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 5 predicate places. [2023-09-01 10:43:31,722 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 46 flow [2023-09-01 10:43:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 10:43:31,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:43:31,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:43:31,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:43:31,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:43:31,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:43:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash 23964701, now seen corresponding path program 1 times [2023-09-01 10:43:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:43:31,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733953959] [2023-09-01 10:43:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:43:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:43:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:43:31,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:43:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:43:31,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:43:31,769 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:43:31,770 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-09-01 10:43:31,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 10:43:31,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:43:31,771 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-09-01 10:43:31,775 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 10:43:31,775 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 10:43:31,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 10:43:31 BasicIcfg [2023-09-01 10:43:31,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 10:43:31,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 10:43:31,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 10:43:31,801 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 10:43:31,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:43:28" (3/4) ... [2023-09-01 10:43:31,803 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 10:43:31,835 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 10:43:31,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 10:43:31,836 INFO L158 Benchmark]: Toolchain (without parser) took 4089.49ms. Allocated memory was 62.9MB in the beginning and 94.4MB in the end (delta: 31.5MB). Free memory was 43.0MB in the beginning and 42.7MB in the end (delta: 362.5kB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-09-01 10:43:31,836 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 10:43:31,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.73ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 42.8MB in the beginning and 53.5MB in the end (delta: -10.6MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2023-09-01 10:43:31,836 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.08ms. Allocated memory is still 77.6MB. Free memory was 53.5MB in the beginning and 51.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 10:43:31,836 INFO L158 Benchmark]: Boogie Preprocessor took 36.23ms. Allocated memory is still 77.6MB. Free memory was 51.4MB in the beginning and 50.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 10:43:31,836 INFO L158 Benchmark]: RCFGBuilder took 320.27ms. Allocated memory is still 77.6MB. Free memory was 50.2MB in the beginning and 38.0MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 10:43:31,837 INFO L158 Benchmark]: TraceAbstraction took 3233.72ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 37.3MB in the beginning and 45.5MB in the end (delta: -8.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2023-09-01 10:43:31,837 INFO L158 Benchmark]: Witness Printer took 33.89ms. Allocated memory is still 94.4MB. Free memory was 45.5MB in the beginning and 42.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 10:43:31,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.73ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 42.8MB in the beginning and 53.5MB in the end (delta: -10.6MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.08ms. Allocated memory is still 77.6MB. Free memory was 53.5MB in the beginning and 51.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.23ms. Allocated memory is still 77.6MB. Free memory was 51.4MB in the beginning and 50.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.27ms. Allocated memory is still 77.6MB. Free memory was 50.2MB in the beginning and 38.0MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3233.72ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 37.3MB in the beginning and 45.5MB in the end (delta: -8.1MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Witness Printer took 33.89ms. Allocated memory is still 94.4MB. Free memory was 45.5MB in the beginning and 42.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 55 PlacesBefore, 15 PlacesAfterwards, 51 TransitionsBefore, 11 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 592 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 269, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 126, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 269, independent: 70, independent conditional: 0, independent unconditional: 70, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 126, unknown conditional: 0, unknown unconditional: 126] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L693] 0 pthread_t id; [L694] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, g=0, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L687] 1 g = 17 VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, g=17] [L690] 1 return ((void *)0); [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, D={4:0}, \old(cond)=0, \result={0:0}, arg={0:0}, arg={0:0}, cond=0, g=17] - UnprovableResult [Line: 694]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 72 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 210 IncrementalHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 3 mSDtfsCounter, 210 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=3, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-09-01 10:43:31,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE