./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --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 [2023-08-31 23:45:48,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:45:48,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:45:48,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:45:48,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:45:48,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:45:48,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:45:48,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:45:48,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:45:48,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:45:48,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:45:48,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:45:48,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:45:48,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:45:48,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:45:48,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:45:48,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:45:48,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:45:48,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:45:48,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:45:48,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:45:48,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:45:48,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:45:48,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:45:48,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:45:48,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:45:48,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:45:48,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:45:48,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:45:48,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:45:48,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:45:48,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:45:48,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:45:48,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:45:48,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:45:48,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:45:48,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:45:48,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:45:48,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:45:48,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:45:48,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:45:48,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:45:48,421 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:45:48,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:45:48,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:45:48,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:45:48,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:45:48,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:45:48,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:45:48,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:45:48,423 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:45:48,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:45:48,424 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:45:48,424 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:45:48,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:45:48,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:45:48,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:45:48,425 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:45:48,425 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:45:48,425 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:45:48,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:45:48,425 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:45:48,426 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:45:48,426 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:45:48,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:45:48,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:45:48,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:45:48,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:45:48,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:45:48,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:45:48,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:45:48,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:45:48,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:45:48,428 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:45:48,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:45:48,428 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:45:48,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:45:48,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:45:48,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:45:48,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:45:48,748 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:45:48,749 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:45:48,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-31 23:45:50,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:45:50,320 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:45:50,320 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-31 23:45:50,334 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb1bb04b/4a797e989b814d1c8817f9dc21fa0edc/FLAG23a3eafa2 [2023-08-31 23:45:50,350 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cb1bb04b/4a797e989b814d1c8817f9dc21fa0edc [2023-08-31 23:45:50,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:45:50,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:45:50,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:50,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:45:50,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:45:50,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30544bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50, skipping insertion in model container [2023-08-31 23:45:50,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:45:50,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:45:50,942 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2023-08-31 23:45:50,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:45:50,987 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:45:51,043 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2023-08-31 23:45:51,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:45:51,181 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:45:51,181 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:45:51,187 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:45:51,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51 WrapperNode [2023-08-31 23:45:51,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:51,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:45:51,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:45:51,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:45:51,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,274 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2023-08-31 23:45:51,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:45:51,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:45:51,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:45:51,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:45:51,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:45:51,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:45:51,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:45:51,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:45:51,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (1/1) ... [2023-08-31 23:45:51,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:45:51,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:45:51,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:45:51,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:45:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:45:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:45:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:45:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 23:45:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 23:45:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:45:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 23:45:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:45:51,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:45:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:45:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 23:45:51,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 23:45:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:45:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:45:51,415 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:45:51,714 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:45:51,715 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:45:51,931 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:45:51,953 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:45:51,954 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:45:51,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:51 BoogieIcfgContainer [2023-08-31 23:45:51,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:45:51,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:45:51,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:45:51,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:45:51,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:45:50" (1/3) ... [2023-08-31 23:45:51,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bf863d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:45:51, skipping insertion in model container [2023-08-31 23:45:51,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:51" (2/3) ... [2023-08-31 23:45:51,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bf863d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:45:51, skipping insertion in model container [2023-08-31 23:45:51,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:51" (3/3) ... [2023-08-31 23:45:51,963 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2023-08-31 23:45:51,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:45:51,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-31 23:45:51,993 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:45:52,053 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 23:45:52,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 105 transitions, 218 flow [2023-08-31 23:45:52,194 INFO L130 PetriNetUnfolder]: 4/121 cut-off events. [2023-08-31 23:45:52,194 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 23:45:52,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 121 events. 4/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 211 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2023-08-31 23:45:52,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 105 transitions, 218 flow [2023-08-31 23:45:52,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 100 transitions, 206 flow [2023-08-31 23:45:52,213 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:45:52,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 100 transitions, 206 flow [2023-08-31 23:45:52,232 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 100 transitions, 206 flow [2023-08-31 23:45:52,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 206 flow [2023-08-31 23:45:52,271 INFO L130 PetriNetUnfolder]: 4/113 cut-off events. [2023-08-31 23:45:52,271 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 23:45:52,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 113 events. 4/113 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 171 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2023-08-31 23:45:52,273 INFO L119 LiptonReduction]: Number of co-enabled transitions 266 [2023-08-31 23:45:56,773 INFO L134 LiptonReduction]: Checked pairs total: 381 [2023-08-31 23:45:56,773 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-31 23:45:56,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:45:56,793 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@74166d29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:45:56,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-31 23:45:56,795 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:45:56,795 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:56,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:56,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:45:56,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:45:56,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash 419, now seen corresponding path program 1 times [2023-08-31 23:45:56,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:56,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709610591] [2023-08-31 23:45:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:56,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:56,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:56,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709610591] [2023-08-31 23:45:56,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709610591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:56,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:56,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:45:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039199774] [2023-08-31 23:45:56,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:56,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:45:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:57,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:45:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:45:57,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 231 [2023-08-31 23:45:57,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:57,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 231 [2023-08-31 23:45:57,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:57,061 INFO L130 PetriNetUnfolder]: 8/33 cut-off events. [2023-08-31 23:45:57,061 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 23:45:57,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 33 events. 8/33 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 7 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 44. Up to 32 conditions per place. [2023-08-31 23:45:57,063 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-31 23:45:57,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 62 flow [2023-08-31 23:45:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:45:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:45:57,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2023-08-31 23:45:57,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45021645021645024 [2023-08-31 23:45:57,079 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2023-08-31 23:45:57,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2023-08-31 23:45:57,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:57,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2023-08-31 23:45:57,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,090 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,092 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 208 transitions. [2023-08-31 23:45:57,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 62 flow [2023-08-31 23:45:57,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:45:57,096 INFO L231 Difference]: Finished difference. Result has 16 places, 15 transitions, 32 flow [2023-08-31 23:45:57,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=15} [2023-08-31 23:45:57,100 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -6 predicate places. [2023-08-31 23:45:57,100 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 15 transitions, 32 flow [2023-08-31 23:45:57,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:57,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 23:45:57,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:45:57,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:45:57,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash 13532, now seen corresponding path program 1 times [2023-08-31 23:45:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250323885] [2023-08-31 23:45:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:57,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:57,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:57,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250323885] [2023-08-31 23:45:57,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250323885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:57,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:57,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:45:57,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254389320] [2023-08-31 23:45:57,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:57,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:57,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:57,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:57,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:57,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 231 [2023-08-31 23:45:57,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 15 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:57,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 231 [2023-08-31 23:45:57,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:57,348 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-08-31 23:45:57,349 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:57,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 30 events. 8/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 55 event pairs, 7 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 59. Up to 28 conditions per place. [2023-08-31 23:45:57,350 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 12 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-08-31 23:45:57,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 16 transitions, 62 flow [2023-08-31 23:45:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-31 23:45:57,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2023-08-31 23:45:57,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-31 23:45:57,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-31 23:45:57,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:57,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-31 23:45:57,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,362 INFO L175 Difference]: Start difference. First operand has 16 places, 15 transitions, 32 flow. Second operand 3 states and 287 transitions. [2023-08-31 23:45:57,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 16 transitions, 62 flow [2023-08-31 23:45:57,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:45:57,365 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 48 flow [2023-08-31 23:45:57,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2023-08-31 23:45:57,366 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-31 23:45:57,366 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 48 flow [2023-08-31 23:45:57,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:57,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 23:45:57,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:45:57,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:45:57,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:57,369 INFO L85 PathProgramCache]: Analyzing trace with hash 13524, now seen corresponding path program 1 times [2023-08-31 23:45:57,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:57,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019463326] [2023-08-31 23:45:57,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:57,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:57,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:57,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019463326] [2023-08-31 23:45:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019463326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:57,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:45:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430627170] [2023-08-31 23:45:57,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:57,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:57,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 231 [2023-08-31 23:45:57,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:57,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 231 [2023-08-31 23:45:57,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:57,556 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-08-31 23:45:57,556 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:57,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 26 events. 6/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 41 event pairs, 3 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 58. Up to 13 conditions per place. [2023-08-31 23:45:57,557 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 8 selfloop transitions, 4 changer transitions 1/15 dead transitions. [2023-08-31 23:45:57,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 67 flow [2023-08-31 23:45:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-31 23:45:57,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054834054834055 [2023-08-31 23:45:57,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-31 23:45:57,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-31 23:45:57,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:57,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-31 23:45:57,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,562 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 48 flow. Second operand 3 states and 281 transitions. [2023-08-31 23:45:57,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 67 flow [2023-08-31 23:45:57,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:45:57,563 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 42 flow [2023-08-31 23:45:57,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-31 23:45:57,564 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-31 23:45:57,564 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 42 flow [2023-08-31 23:45:57,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:57,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:45:57,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:45:57,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:45:57,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash 12690029, now seen corresponding path program 1 times [2023-08-31 23:45:57,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:57,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132810256] [2023-08-31 23:45:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:57,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:57,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:57,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132810256] [2023-08-31 23:45:57,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132810256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:57,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:57,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:45:57,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967092868] [2023-08-31 23:45:57,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:57,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:57,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:57,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:57,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:57,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 231 [2023-08-31 23:45:57,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:57,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 231 [2023-08-31 23:45:57,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:57,695 INFO L130 PetriNetUnfolder]: 5/31 cut-off events. [2023-08-31 23:45:57,695 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 23:45:57,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 31 events. 5/31 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 85 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 78. Up to 16 conditions per place. [2023-08-31 23:45:57,696 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 14 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2023-08-31 23:45:57,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 105 flow [2023-08-31 23:45:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:57,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-08-31 23:45:57,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2023-08-31 23:45:57,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-08-31 23:45:57,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-08-31 23:45:57,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:57,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-08-31 23:45:57,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,701 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 42 flow. Second operand 3 states and 286 transitions. [2023-08-31 23:45:57,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 105 flow [2023-08-31 23:45:57,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 20 transitions, 79 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-31 23:45:57,702 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 58 flow [2023-08-31 23:45:57,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-31 23:45:57,703 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-31 23:45:57,703 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 58 flow [2023-08-31 23:45:57,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:57,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:45:57,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:45:57,705 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:45:57,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:57,705 INFO L85 PathProgramCache]: Analyzing trace with hash 393396278, now seen corresponding path program 1 times [2023-08-31 23:45:57,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:57,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35013940] [2023-08-31 23:45:57,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:57,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:57,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:57,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35013940] [2023-08-31 23:45:57,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35013940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:57,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:57,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:45:57,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30219268] [2023-08-31 23:45:57,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:57,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:57,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:57,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 231 [2023-08-31 23:45:57,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:57,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 231 [2023-08-31 23:45:57,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:57,902 INFO L130 PetriNetUnfolder]: 4/27 cut-off events. [2023-08-31 23:45:57,902 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 23:45:57,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 27 events. 4/27 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 56 event pairs, 2 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 72. Up to 21 conditions per place. [2023-08-31 23:45:57,903 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-31 23:45:57,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 82 flow [2023-08-31 23:45:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-31 23:45:57,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40115440115440115 [2023-08-31 23:45:57,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-31 23:45:57,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-31 23:45:57,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:57,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-31 23:45:57,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,908 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 58 flow. Second operand 3 states and 278 transitions. [2023-08-31 23:45:57,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 82 flow [2023-08-31 23:45:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:45:57,909 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 54 flow [2023-08-31 23:45:57,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-08-31 23:45:57,910 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-31 23:45:57,910 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 54 flow [2023-08-31 23:45:57,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:57,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:45:57,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:45:57,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:45:57,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:57,912 INFO L85 PathProgramCache]: Analyzing trace with hash 393396844, now seen corresponding path program 1 times [2023-08-31 23:45:57,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:57,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095952078] [2023-08-31 23:45:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:57,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:45:57,930 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:45:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:45:57,960 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:45:57,961 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:45:57,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-31 23:45:57,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2023-08-31 23:45:57,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-31 23:45:57,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-31 23:45:57,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2023-08-31 23:45:57,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2023-08-31 23:45:57,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-31 23:45:57,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-31 23:45:57,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-31 23:45:57,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2023-08-31 23:45:57,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-08-31 23:45:57,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-31 23:45:57,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:45:57,967 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-31 23:45:57,971 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:45:57,971 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:45:57,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:45:57 BasicIcfg [2023-08-31 23:45:57,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:45:57,988 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:45:57,988 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:45:57,988 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:45:57,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:51" (3/4) ... [2023-08-31 23:45:57,991 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-31 23:45:57,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:45:57,992 INFO L158 Benchmark]: Toolchain (without parser) took 7638.57ms. Allocated memory was 62.9MB in the beginning and 117.4MB in the end (delta: 54.5MB). Free memory was 26.0MB in the beginning and 53.4MB in the end (delta: -27.4MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2023-08-31 23:45:57,992 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:45:57,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 832.86ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 25.8MB in the beginning and 45.2MB in the end (delta: -19.4MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2023-08-31 23:45:57,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.93ms. Allocated memory is still 79.7MB. Free memory was 45.2MB in the beginning and 41.9MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:45:57,994 INFO L158 Benchmark]: Boogie Preprocessor took 59.40ms. Allocated memory is still 79.7MB. Free memory was 41.9MB in the beginning and 39.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:45:57,994 INFO L158 Benchmark]: RCFGBuilder took 620.02ms. Allocated memory is still 79.7MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 19.3kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-31 23:45:57,995 INFO L158 Benchmark]: TraceAbstraction took 6029.79ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 38.6MB in the beginning and 53.5MB in the end (delta: -14.9MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2023-08-31 23:45:57,995 INFO L158 Benchmark]: Witness Printer took 3.25ms. Allocated memory is still 117.4MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 73.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:45:57,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 832.86ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 25.8MB in the beginning and 45.2MB in the end (delta: -19.4MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.93ms. Allocated memory is still 79.7MB. Free memory was 45.2MB in the beginning and 41.9MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.40ms. Allocated memory is still 79.7MB. Free memory was 41.9MB in the beginning and 39.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 620.02ms. Allocated memory is still 79.7MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 19.3kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6029.79ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 38.6MB in the beginning and 53.5MB in the end (delta: -14.9MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * Witness Printer took 3.25ms. Allocated memory is still 117.4MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 73.8kB). 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: 4.5s, 99 PlacesBefore, 22 PlacesAfterwards, 100 TransitionsBefore, 20 TransitionsAfterwards, 266 CoEnabledTransitionPairs, 8 FixpointIterations, 88 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 126 TotalNumberOfCompositions, 381 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 299, independent: 256, independent conditional: 0, independent unconditional: 256, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 160, independent: 145, independent conditional: 0, independent unconditional: 145, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 299, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 160, unknown conditional: 0, unknown unconditional: 160] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1695. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: 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, 110 locations, 12 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: 5.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 169 IncrementalHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 18 mSDtfsCounter, 169 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, 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, 0.4s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 could not prove your program: unable to determine feasibility of some traces [2023-08-31 23:45:58,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --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 [2023-08-31 23:45:59,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:45:59,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:45:59,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:45:59,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:45:59,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:45:59,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:45:59,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:45:59,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:45:59,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:45:59,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:46:00,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:46:00,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:46:00,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:46:00,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:46:00,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:46:00,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:46:00,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:46:00,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:46:00,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:46:00,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:46:00,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:46:00,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:46:00,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:46:00,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:46:00,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:46:00,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:46:00,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:46:00,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:46:00,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:46:00,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:46:00,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:46:00,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:46:00,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:46:00,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:46:00,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:46:00,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:46:00,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:46:00,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:46:00,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:46:00,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:46:00,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-31 23:46:00,078 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:46:00,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:46:00,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:46:00,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:46:00,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:46:00,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:46:00,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:46:00,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:46:00,082 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:46:00,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:46:00,083 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:46:00,083 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:46:00,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:46:00,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:46:00,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:46:00,083 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:46:00,084 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:46:00,084 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:46:00,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:46:00,084 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:46:00,084 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-31 23:46:00,084 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-31 23:46:00,084 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:46:00,084 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:46:00,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:46:00,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:46:00,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:46:00,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:46:00,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:46:00,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:46:00,086 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-31 23:46:00,086 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-31 23:46:00,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:46:00,086 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:46:00,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:46:00,087 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-31 23:46:00,087 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:46:00,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:46:00,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:46:00,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:46:00,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:46:00,409 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:46:00,409 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:46:00,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-31 23:46:01,571 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:46:01,889 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:46:01,890 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-31 23:46:01,912 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7dbf54c/e62592e65a9741b99f04d3e4ad560a83/FLAG6aa6ab006 [2023-08-31 23:46:01,930 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7dbf54c/e62592e65a9741b99f04d3e4ad560a83 [2023-08-31 23:46:01,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:46:01,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:46:01,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:46:01,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:46:01,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:46:01,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:46:01" (1/1) ... [2023-08-31 23:46:01,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fd3feb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:01, skipping insertion in model container [2023-08-31 23:46:01,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:46:01" (1/1) ... [2023-08-31 23:46:01,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:46:02,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:46:02,552 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2023-08-31 23:46:02,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:46:02,601 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:46:02,658 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i[76153,76166] [2023-08-31 23:46:02,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:46:02,787 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:46:02,788 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:46:02,793 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:46:02,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02 WrapperNode [2023-08-31 23:46:02,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:46:02,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:46:02,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:46:02,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:46:02,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,862 INFO L138 Inliner]: procedures = 486, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2023-08-31 23:46:02,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:46:02,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:46:02,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:46:02,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:46:02,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,937 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:46:02,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:46:02,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:46:02,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:46:02,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (1/1) ... [2023-08-31 23:46:02,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:46:02,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:46:02,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:46:02,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:46:03,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:46:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:46:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-31 23:46:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-31 23:46:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:46:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 23:46:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:46:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 23:46:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:46:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:46:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-31 23:46:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:46:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-31 23:46:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 23:46:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 23:46:03,007 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:46:03,321 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:46:03,322 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:46:03,562 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:46:03,596 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:46:03,596 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:46:03,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:46:03 BoogieIcfgContainer [2023-08-31 23:46:03,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:46:03,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:46:03,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:46:03,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:46:03,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:46:01" (1/3) ... [2023-08-31 23:46:03,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd03b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:46:03, skipping insertion in model container [2023-08-31 23:46:03,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:02" (2/3) ... [2023-08-31 23:46:03,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd03b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:46:03, skipping insertion in model container [2023-08-31 23:46:03,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:46:03" (3/3) ... [2023-08-31 23:46:03,607 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2023-08-31 23:46:03,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:46:03,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-31 23:46:03,619 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:46:03,672 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 23:46:03,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 216 flow [2023-08-31 23:46:03,748 INFO L130 PetriNetUnfolder]: 4/119 cut-off events. [2023-08-31 23:46:03,754 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 23:46:03,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 4/119 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2023-08-31 23:46:03,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 216 flow [2023-08-31 23:46:03,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 99 transitions, 204 flow [2023-08-31 23:46:03,767 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:46:03,787 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 99 transitions, 204 flow [2023-08-31 23:46:03,790 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 99 transitions, 204 flow [2023-08-31 23:46:03,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 99 transitions, 204 flow [2023-08-31 23:46:03,820 INFO L130 PetriNetUnfolder]: 4/111 cut-off events. [2023-08-31 23:46:03,821 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 23:46:03,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 111 events. 4/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2023-08-31 23:46:03,823 INFO L119 LiptonReduction]: Number of co-enabled transitions 252 [2023-08-31 23:46:13,980 INFO L134 LiptonReduction]: Checked pairs total: 355 [2023-08-31 23:46:13,981 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-31 23:46:13,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:46:14,000 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6b09e6ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:46:14,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-31 23:46:14,003 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:46:14,003 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:46:14,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:46:14,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:46:14,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:46:14,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:46:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash 413, now seen corresponding path program 1 times [2023-08-31 23:46:14,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:46:14,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775799373] [2023-08-31 23:46:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:46:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:14,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:46:14,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:46:14,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-31 23:46:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:46:14,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-31 23:46:14,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:46:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:46:14,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:46:14,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:46:14,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775799373] [2023-08-31 23:46:14,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775799373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:46:14,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:46:14,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:46:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688110342] [2023-08-31 23:46:14,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:46:14,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:46:14,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:46:14,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:46:14,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:46:14,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 226 [2023-08-31 23:46:14,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:46:14,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 226 [2023-08-31 23:46:14,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:46:14,252 INFO L130 PetriNetUnfolder]: 8/33 cut-off events. [2023-08-31 23:46:14,252 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 23:46:14,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 33 events. 8/33 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 7 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 44. Up to 32 conditions per place. [2023-08-31 23:46:14,253 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-31 23:46:14,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 62 flow [2023-08-31 23:46:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:46:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:46:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 206 transitions. [2023-08-31 23:46:14,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557522123893805 [2023-08-31 23:46:14,269 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 206 transitions. [2023-08-31 23:46:14,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 206 transitions. [2023-08-31 23:46:14,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:46:14,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 206 transitions. [2023-08-31 23:46:14,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 103.0) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,280 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,281 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 206 transitions. [2023-08-31 23:46:14,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 62 flow [2023-08-31 23:46:14,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:46:14,284 INFO L231 Difference]: Finished difference. Result has 16 places, 15 transitions, 32 flow [2023-08-31 23:46:14,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=15} [2023-08-31 23:46:14,291 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -6 predicate places. [2023-08-31 23:46:14,291 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 15 transitions, 32 flow [2023-08-31 23:46:14,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:46:14,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 23:46:14,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-31 23:46:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:14,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:46:14,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:46:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash 13334, now seen corresponding path program 1 times [2023-08-31 23:46:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:46:14,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447258319] [2023-08-31 23:46:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:46:14,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:14,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:46:14,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:46:14,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-31 23:46:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:46:14,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:46:14,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:46:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:46:14,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:46:14,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:46:14,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447258319] [2023-08-31 23:46:14,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447258319] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:46:14,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:46:14,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:46:14,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458681756] [2023-08-31 23:46:14,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:46:14,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:46:14,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:46:14,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:46:14,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:46:14,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-31 23:46:14,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 15 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:46:14,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-31 23:46:14,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:46:14,691 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-08-31 23:46:14,691 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:46:14,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 30 events. 8/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 56 event pairs, 7 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 59. Up to 28 conditions per place. [2023-08-31 23:46:14,692 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 12 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-08-31 23:46:14,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 16 transitions, 62 flow [2023-08-31 23:46:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:46:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:46:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-08-31 23:46:14,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41887905604719766 [2023-08-31 23:46:14,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-08-31 23:46:14,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-08-31 23:46:14,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:46:14,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-08-31 23:46:14,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,702 INFO L175 Difference]: Start difference. First operand has 16 places, 15 transitions, 32 flow. Second operand 3 states and 284 transitions. [2023-08-31 23:46:14,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 16 transitions, 62 flow [2023-08-31 23:46:14,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:46:14,703 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 48 flow [2023-08-31 23:46:14,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2023-08-31 23:46:14,704 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-31 23:46:14,704 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 48 flow [2023-08-31 23:46:14,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:14,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:46:14,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 23:46:14,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-08-31 23:46:14,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:14,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:46:14,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:46:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash 13324, now seen corresponding path program 1 times [2023-08-31 23:46:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:46:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778451906] [2023-08-31 23:46:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:46:14,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:14,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:46:14,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:46:14,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-31 23:46:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:46:15,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-31 23:46:15,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:46:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:46:15,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:46:15,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:46:15,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778451906] [2023-08-31 23:46:15,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778451906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:46:15,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:46:15,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:46:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592266517] [2023-08-31 23:46:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:46:15,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:46:15,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:46:15,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:46:15,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:46:15,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-31 23:46:15,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:46:15,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-31 23:46:15,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:46:15,147 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-08-31 23:46:15,147 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:46:15,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 26 events. 6/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 43 event pairs, 3 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 58. Up to 13 conditions per place. [2023-08-31 23:46:15,147 INFO L137 encePairwiseOnDemand]: 220/226 looper letters, 8 selfloop transitions, 4 changer transitions 1/15 dead transitions. [2023-08-31 23:46:15,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 67 flow [2023-08-31 23:46:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:46:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:46:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-31 23:46:15,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41002949852507375 [2023-08-31 23:46:15,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-31 23:46:15,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-31 23:46:15,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:46:15,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-31 23:46:15,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,155 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 48 flow. Second operand 3 states and 278 transitions. [2023-08-31 23:46:15,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 67 flow [2023-08-31 23:46:15,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:46:15,156 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 42 flow [2023-08-31 23:46:15,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-31 23:46:15,162 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-31 23:46:15,162 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 42 flow [2023-08-31 23:46:15,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:46:15,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:46:15,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-31 23:46:15,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:15,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:46:15,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:46:15,365 INFO L85 PathProgramCache]: Analyzing trace with hash 12538810, now seen corresponding path program 1 times [2023-08-31 23:46:15,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:46:15,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061055869] [2023-08-31 23:46:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:46:15,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:15,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:46:15,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:46:15,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-31 23:46:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:46:15,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 23:46:15,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:46:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:46:15,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:46:15,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:46:15,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061055869] [2023-08-31 23:46:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061055869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:46:15,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:46:15,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:46:15,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914275581] [2023-08-31 23:46:15,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:46:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:46:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:46:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:46:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:46:15,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-31 23:46:15,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:46:15,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-31 23:46:15,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:46:15,544 INFO L130 PetriNetUnfolder]: 5/31 cut-off events. [2023-08-31 23:46:15,544 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 23:46:15,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 31 events. 5/31 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 89 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 78. Up to 16 conditions per place. [2023-08-31 23:46:15,545 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 14 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2023-08-31 23:46:15,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 105 flow [2023-08-31 23:46:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:46:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:46:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-31 23:46:15,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174041297935103 [2023-08-31 23:46:15,548 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-31 23:46:15,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-31 23:46:15,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:46:15,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-31 23:46:15,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,552 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 42 flow. Second operand 3 states and 283 transitions. [2023-08-31 23:46:15,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 105 flow [2023-08-31 23:46:15,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 20 transitions, 79 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-31 23:46:15,553 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 58 flow [2023-08-31 23:46:15,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-31 23:46:15,554 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-31 23:46:15,554 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 58 flow [2023-08-31 23:46:15,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:46:15,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:46:15,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-31 23:46:15,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:15,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:46:15,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:46:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash 388707919, now seen corresponding path program 1 times [2023-08-31 23:46:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:46:15,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816716847] [2023-08-31 23:46:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:46:15,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:15,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:46:15,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:46:15,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-31 23:46:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:46:15,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 23:46:15,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:46:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:46:15,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:46:15,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:46:15,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816716847] [2023-08-31 23:46:15,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816716847] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:46:15,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:46:15,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:46:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238089382] [2023-08-31 23:46:15,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:46:15,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:46:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:46:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:46:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:46:15,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 226 [2023-08-31 23:46:15,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:15,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:46:15,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 226 [2023-08-31 23:46:15,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:46:16,041 INFO L130 PetriNetUnfolder]: 4/27 cut-off events. [2023-08-31 23:46:16,041 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 23:46:16,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 27 events. 4/27 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 59 event pairs, 2 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 72. Up to 21 conditions per place. [2023-08-31 23:46:16,042 INFO L137 encePairwiseOnDemand]: 223/226 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-31 23:46:16,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 82 flow [2023-08-31 23:46:16,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:46:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:46:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-08-31 23:46:16,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41887905604719766 [2023-08-31 23:46:16,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-08-31 23:46:16,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-08-31 23:46:16,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:46:16,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-08-31 23:46:16,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:16,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:16,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:16,049 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 58 flow. Second operand 3 states and 284 transitions. [2023-08-31 23:46:16,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 82 flow [2023-08-31 23:46:16,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:46:16,050 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 54 flow [2023-08-31 23:46:16,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-08-31 23:46:16,051 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-31 23:46:16,051 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 54 flow [2023-08-31 23:46:16,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:46:16,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:46:16,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:46:16,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-31 23:46:16,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:16,265 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-31 23:46:16,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:46:16,265 INFO L85 PathProgramCache]: Analyzing trace with hash 388708961, now seen corresponding path program 1 times [2023-08-31 23:46:16,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:46:16,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973529143] [2023-08-31 23:46:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:46:16,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:16,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:46:16,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:46:16,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-31 23:46:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:46:16,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:46:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:46:16,442 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-31 23:46:16,442 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:46:16,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-31 23:46:16,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2023-08-31 23:46:16,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-31 23:46:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-31 23:46:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2023-08-31 23:46:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2023-08-31 23:46:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-31 23:46:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-31 23:46:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-31 23:46:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2023-08-31 23:46:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-08-31 23:46:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-31 23:46:16,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-08-31 23:46:16,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:46:16,647 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-31 23:46:16,650 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:46:16,650 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:46:16,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:46:16 BasicIcfg [2023-08-31 23:46:16,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:46:16,668 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:46:16,668 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:46:16,668 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:46:16,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:46:03" (3/4) ... [2023-08-31 23:46:16,670 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-31 23:46:16,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:46:16,671 INFO L158 Benchmark]: Toolchain (without parser) took 14737.86ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 47.9MB in the beginning and 31.4MB in the end (delta: 16.6MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2023-08-31 23:46:16,671 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:46:16,672 INFO L158 Benchmark]: CACSL2BoogieTranslator took 860.30ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 47.8MB in the beginning and 56.1MB in the end (delta: -8.3MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2023-08-31 23:46:16,672 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.65ms. Allocated memory is still 88.1MB. Free memory was 56.1MB in the beginning and 52.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:46:16,672 INFO L158 Benchmark]: Boogie Preprocessor took 84.31ms. Allocated memory is still 88.1MB. Free memory was 52.7MB in the beginning and 49.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:46:16,673 INFO L158 Benchmark]: RCFGBuilder took 650.87ms. Allocated memory is still 88.1MB. Free memory was 49.8MB in the beginning and 44.2MB in the end (delta: 5.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:46:16,673 INFO L158 Benchmark]: TraceAbstraction took 13065.98ms. Allocated memory is still 88.1MB. Free memory was 43.7MB in the beginning and 32.0MB in the end (delta: 11.7MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2023-08-31 23:46:16,673 INFO L158 Benchmark]: Witness Printer took 2.99ms. Allocated memory is still 88.1MB. Free memory was 32.0MB in the beginning and 31.4MB in the end (delta: 637.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:46:16,675 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 34.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 860.30ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 47.8MB in the beginning and 56.1MB in the end (delta: -8.3MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.65ms. Allocated memory is still 88.1MB. Free memory was 56.1MB in the beginning and 52.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.31ms. Allocated memory is still 88.1MB. Free memory was 52.7MB in the beginning and 49.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 650.87ms. Allocated memory is still 88.1MB. Free memory was 49.8MB in the beginning and 44.2MB in the end (delta: 5.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 13065.98ms. Allocated memory is still 88.1MB. Free memory was 43.7MB in the beginning and 32.0MB in the end (delta: 11.7MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Witness Printer took 2.99ms. Allocated memory is still 88.1MB. Free memory was 32.0MB in the beginning and 31.4MB in the end (delta: 637.9kB). 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: 10.2s, 98 PlacesBefore, 22 PlacesAfterwards, 99 TransitionsBefore, 20 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 8 FixpointIterations, 89 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 122 TotalNumberOfCompositions, 355 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 278, independent: 235, independent conditional: 0, independent unconditional: 235, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 147, independent: 132, independent conditional: 0, independent unconditional: 132, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 278, independent: 103, independent conditional: 0, independent unconditional: 103, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 147, unknown conditional: 0, unknown unconditional: 147] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1695. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: 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, 109 locations, 12 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: 13.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 177 IncrementalHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 22 mSDtfsCounter, 177 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 1 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 could not prove your program: unable to determine feasibility of some traces [2023-08-31 23:46:16,706 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 Result: UNKNOWN: Overapproximated counterexample