./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 AFTER --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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:51:59,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:51:59,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:51:59,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:51:59,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:51:59,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:51:59,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:51:59,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:51:59,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:51:59,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:51:59,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:51:59,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:51:59,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:51:59,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:52:00,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:52:00,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:52:00,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:52:00,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:52:00,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:52:00,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:52:00,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:52:00,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:52:00,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:52:00,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:52:00,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:52:00,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:52:00,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:52:00,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:52:00,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:52:00,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:52:00,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:52:00,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:52:00,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:52:00,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:52:00,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:52:00,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:52:00,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:52:00,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:52:00,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:52:00,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:52:00,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:52:00,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:52:00,067 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:52:00,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:52:00,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:52:00,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:52:00,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:52:00,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:52:00,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:52:00,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:52:00,069 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:52:00,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:52:00,070 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:52:00,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:52:00,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:52:00,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:52:00,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:52:00,071 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:52:00,071 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:52:00,071 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:52:00,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:52:00,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:52:00,071 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:52:00,072 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:52:00,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:52:00,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:52:00,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:52:00,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:00,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:52:00,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:52:00,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:52:00,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:52:00,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:52:00,073 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:52:00,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:52:00,073 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:52:00,073 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:52:00,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:52:00,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:52:00,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:52:00,337 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:52:00,337 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:52:00,338 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-29 20:52:01,222 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:52:01,519 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:52:01,519 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-29 20:52:01,534 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719f00aeb/cc973c144dd44509b183e8b22e6f1e12/FLAGfe5be9f0b [2023-08-29 20:52:01,550 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719f00aeb/cc973c144dd44509b183e8b22e6f1e12 [2023-08-29 20:52:01,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:52:01,553 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:52:01,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:01,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:52:01,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:52:01,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:01" (1/1) ... [2023-08-29 20:52:01,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9787bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:01, skipping insertion in model container [2023-08-29 20:52:01,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:01" (1/1) ... [2023-08-29 20:52:01,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:52:01,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:01,988 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] [2023-08-29 20:52:02,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:02,044 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:52:02,074 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] [2023-08-29 20:52:02,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:02,157 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:02,157 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:02,164 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:52:02,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02 WrapperNode [2023-08-29 20:52:02,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:02,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:02,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:52:02,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:52:02,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,219 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2023-08-29 20:52:02,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:02,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:52:02,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:52:02,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:52:02,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,273 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:52:02,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:52:02,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:52:02,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:52:02,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (1/1) ... [2023-08-29 20:52:02,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:02,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:52:02,336 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) [2023-08-29 20:52:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:52:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:52:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:52:02,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 20:52:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 20:52:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:52:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 20:52:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:52:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:52:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:52:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 20:52:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 20:52:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:52:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:52:02,382 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:52:02,370 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 [2023-08-29 20:52:02,670 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:52:02,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:52:02,801 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:52:02,825 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:52:02,825 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:52:02,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:02 BoogieIcfgContainer [2023-08-29 20:52:02,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:52:02,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:52:02,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:52:02,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:52:02,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:52:01" (1/3) ... [2023-08-29 20:52:02,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230d163d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:02, skipping insertion in model container [2023-08-29 20:52:02,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:02" (2/3) ... [2023-08-29 20:52:02,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230d163d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:02, skipping insertion in model container [2023-08-29 20:52:02,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:02" (3/3) ... [2023-08-29 20:52:02,833 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2023-08-29 20:52:02,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:52:02,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 20:52:02,845 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:52:02,874 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 20:52:02,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 105 transitions, 218 flow [2023-08-29 20:52:02,926 INFO L130 PetriNetUnfolder]: 4/121 cut-off events. [2023-08-29 20:52:02,926 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:02,929 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. [2023-08-29 20:52:02,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 105 transitions, 218 flow [2023-08-29 20:52:02,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 100 transitions, 206 flow [2023-08-29 20:52:02,934 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:52:02,948 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 100 transitions, 206 flow [2023-08-29 20:52:02,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 100 transitions, 206 flow [2023-08-29 20:52:02,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 206 flow [2023-08-29 20:52:02,984 INFO L130 PetriNetUnfolder]: 4/113 cut-off events. [2023-08-29 20:52:02,985 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:02,985 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. [2023-08-29 20:52:02,986 INFO L119 LiptonReduction]: Number of co-enabled transitions 266 [2023-08-29 20:52:06,735 INFO L134 LiptonReduction]: Checked pairs total: 381 [2023-08-29 20:52:06,735 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-29 20:52:06,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:52:06,749 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;@76d2b0a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:52:06,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 20:52:06,751 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:52:06,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:06,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:06,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:52:06,752 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)] === [2023-08-29 20:52:06,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:06,755 INFO L85 PathProgramCache]: Analyzing trace with hash 419, now seen corresponding path program 1 times [2023-08-29 20:52:06,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:06,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491276905] [2023-08-29 20:52:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:06,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:06,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:06,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491276905] [2023-08-29 20:52:06,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491276905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:06,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:06,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:52:06,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650581176] [2023-08-29 20:52:06,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:06,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:52:06,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:06,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:52:06,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:52:06,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 231 [2023-08-29 20:52:06,931 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) [2023-08-29 20:52:06,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:06,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 231 [2023-08-29 20:52:06,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:06,965 INFO L130 PetriNetUnfolder]: 8/33 cut-off events. [2023-08-29 20:52:06,965 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:06,965 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. [2023-08-29 20:52:06,966 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-29 20:52:06,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 62 flow [2023-08-29 20:52:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:52:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:52:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2023-08-29 20:52:06,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45021645021645024 [2023-08-29 20:52:06,977 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2023-08-29 20:52:06,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2023-08-29 20:52:06,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:06,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2023-08-29 20:52:06,985 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) [2023-08-29 20:52:06,988 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) [2023-08-29 20:52:06,988 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) [2023-08-29 20:52:06,990 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 208 transitions. [2023-08-29 20:52:06,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 62 flow [2023-08-29 20:52:06,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:06,992 INFO L231 Difference]: Finished difference. Result has 16 places, 15 transitions, 32 flow [2023-08-29 20:52:06,993 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} [2023-08-29 20:52:06,997 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -6 predicate places. [2023-08-29 20:52:06,997 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 15 transitions, 32 flow [2023-08-29 20:52:06,997 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) [2023-08-29 20:52:06,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:06,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 20:52:06,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:52:06,998 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)] === [2023-08-29 20:52:07,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash 13532, now seen corresponding path program 1 times [2023-08-29 20:52:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:07,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539036321] [2023-08-29 20:52:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:07,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:07,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539036321] [2023-08-29 20:52:07,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539036321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:07,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:07,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233465055] [2023-08-29 20:52:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:07,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:07,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:07,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 231 [2023-08-29 20:52:07,158 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) [2023-08-29 20:52:07,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:07,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 231 [2023-08-29 20:52:07,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:07,192 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-08-29 20:52:07,193 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:07,193 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. [2023-08-29 20:52:07,193 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 12 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-08-29 20:52:07,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 16 transitions, 62 flow [2023-08-29 20:52:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-29 20:52:07,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2023-08-29 20:52:07,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-29 20:52:07,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-29 20:52:07,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:07,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-29 20:52:07,200 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) [2023-08-29 20:52:07,202 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) [2023-08-29 20:52:07,202 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) [2023-08-29 20:52:07,202 INFO L175 Difference]: Start difference. First operand has 16 places, 15 transitions, 32 flow. Second operand 3 states and 287 transitions. [2023-08-29 20:52:07,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 16 transitions, 62 flow [2023-08-29 20:52:07,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:52:07,203 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 48 flow [2023-08-29 20:52:07,203 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} [2023-08-29 20:52:07,204 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 20:52:07,204 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 48 flow [2023-08-29 20:52:07,204 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) [2023-08-29 20:52:07,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:07,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 20:52:07,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:52:07,205 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)] === [2023-08-29 20:52:07,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:07,207 INFO L85 PathProgramCache]: Analyzing trace with hash 13524, now seen corresponding path program 1 times [2023-08-29 20:52:07,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:07,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226351924] [2023-08-29 20:52:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:07,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:07,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:07,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226351924] [2023-08-29 20:52:07,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226351924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:07,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:07,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:07,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039578992] [2023-08-29 20:52:07,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:07,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:07,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:07,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:07,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:07,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 231 [2023-08-29 20:52:07,267 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) [2023-08-29 20:52:07,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:07,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 231 [2023-08-29 20:52:07,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:07,289 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-08-29 20:52:07,290 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:07,290 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. [2023-08-29 20:52:07,290 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 8 selfloop transitions, 4 changer transitions 1/15 dead transitions. [2023-08-29 20:52:07,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 67 flow [2023-08-29 20:52:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-29 20:52:07,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054834054834055 [2023-08-29 20:52:07,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-29 20:52:07,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-29 20:52:07,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:07,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-29 20:52:07,292 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) [2023-08-29 20:52:07,293 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) [2023-08-29 20:52:07,294 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) [2023-08-29 20:52:07,294 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 48 flow. Second operand 3 states and 281 transitions. [2023-08-29 20:52:07,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 67 flow [2023-08-29 20:52:07,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:52:07,295 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 42 flow [2023-08-29 20:52:07,295 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} [2023-08-29 20:52:07,295 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 20:52:07,296 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 42 flow [2023-08-29 20:52:07,296 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) [2023-08-29 20:52:07,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:07,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 20:52:07,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:52:07,296 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)] === [2023-08-29 20:52:07,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash 12690029, now seen corresponding path program 1 times [2023-08-29 20:52:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:07,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912893588] [2023-08-29 20:52:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:07,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:07,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:07,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912893588] [2023-08-29 20:52:07,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912893588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:07,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:07,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:07,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302368910] [2023-08-29 20:52:07,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:07,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:07,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:07,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 231 [2023-08-29 20:52:07,355 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) [2023-08-29 20:52:07,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:07,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 231 [2023-08-29 20:52:07,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:07,378 INFO L130 PetriNetUnfolder]: 5/31 cut-off events. [2023-08-29 20:52:07,378 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 20:52:07,379 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. [2023-08-29 20:52:07,379 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 14 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2023-08-29 20:52:07,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 105 flow [2023-08-29 20:52:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:07,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-08-29 20:52:07,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2023-08-29 20:52:07,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-08-29 20:52:07,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-08-29 20:52:07,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:07,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-08-29 20:52:07,381 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) [2023-08-29 20:52:07,382 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) [2023-08-29 20:52:07,383 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) [2023-08-29 20:52:07,383 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 42 flow. Second operand 3 states and 286 transitions. [2023-08-29 20:52:07,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 105 flow [2023-08-29 20:52:07,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 20 transitions, 79 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-29 20:52:07,383 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 58 flow [2023-08-29 20:52:07,384 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} [2023-08-29 20:52:07,384 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 20:52:07,384 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 58 flow [2023-08-29 20:52:07,384 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) [2023-08-29 20:52:07,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:07,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:52:07,385 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)] === [2023-08-29 20:52:07,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:07,385 INFO L85 PathProgramCache]: Analyzing trace with hash 393396278, now seen corresponding path program 1 times [2023-08-29 20:52:07,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:07,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227171789] [2023-08-29 20:52:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:07,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:07,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:07,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227171789] [2023-08-29 20:52:07,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227171789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:07,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:07,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550683359] [2023-08-29 20:52:07,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:07,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:07,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:07,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:07,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 231 [2023-08-29 20:52:07,491 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) [2023-08-29 20:52:07,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:07,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 231 [2023-08-29 20:52:07,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:07,505 INFO L130 PetriNetUnfolder]: 4/27 cut-off events. [2023-08-29 20:52:07,505 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 20:52:07,506 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. [2023-08-29 20:52:07,506 INFO L137 encePairwiseOnDemand]: 228/231 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-29 20:52:07,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 82 flow [2023-08-29 20:52:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-29 20:52:07,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40115440115440115 [2023-08-29 20:52:07,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-29 20:52:07,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-29 20:52:07,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:07,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-29 20:52:07,508 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) [2023-08-29 20:52:07,509 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) [2023-08-29 20:52:07,509 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) [2023-08-29 20:52:07,509 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 58 flow. Second operand 3 states and 278 transitions. [2023-08-29 20:52:07,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 82 flow [2023-08-29 20:52:07,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:07,510 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 54 flow [2023-08-29 20:52:07,511 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} [2023-08-29 20:52:07,511 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 20:52:07,511 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 54 flow [2023-08-29 20:52:07,511 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) [2023-08-29 20:52:07,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:07,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:07,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:52:07,512 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)] === [2023-08-29 20:52:07,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:07,512 INFO L85 PathProgramCache]: Analyzing trace with hash 393396844, now seen corresponding path program 1 times [2023-08-29 20:52:07,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:07,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592481202] [2023-08-29 20:52:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:07,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:07,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 20:52:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:07,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 20:52:07,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 20:52:07,545 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-29 20:52:07,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2023-08-29 20:52:07,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-29 20:52:07,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-29 20:52:07,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2023-08-29 20:52:07,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2023-08-29 20:52:07,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-29 20:52:07,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-29 20:52:07,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-29 20:52:07,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2023-08-29 20:52:07,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-08-29 20:52:07,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-29 20:52:07,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:52:07,549 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-29 20:52:07,551 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:52:07,551 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:52:07,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:52:07 BasicIcfg [2023-08-29 20:52:07,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:52:07,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:52:07,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:52:07,564 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:52:07,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:02" (3/4) ... [2023-08-29 20:52:07,565 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 20:52:07,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:52:07,566 INFO L158 Benchmark]: Toolchain (without parser) took 6013.22ms. Allocated memory was 77.6MB in the beginning and 157.3MB in the end (delta: 79.7MB). Free memory was 53.3MB in the beginning and 89.0MB in the end (delta: -35.7MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2023-08-29 20:52:07,566 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 77.6MB. Free memory was 55.4MB in the beginning and 55.2MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:07,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.08ms. Allocated memory was 77.6MB in the beginning and 107.0MB in the end (delta: 29.4MB). Free memory was 53.0MB in the beginning and 65.4MB in the end (delta: -12.4MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2023-08-29 20:52:07,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.56ms. Allocated memory is still 107.0MB. Free memory was 65.4MB in the beginning and 61.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:52:07,567 INFO L158 Benchmark]: Boogie Preprocessor took 60.40ms. Allocated memory is still 107.0MB. Free memory was 61.3MB in the beginning and 59.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:07,568 INFO L158 Benchmark]: RCFGBuilder took 543.73ms. Allocated memory is still 107.0MB. Free memory was 59.0MB in the beginning and 67.0MB in the end (delta: -7.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 20:52:07,568 INFO L158 Benchmark]: TraceAbstraction took 4734.74ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 66.4MB in the beginning and 89.0MB in the end (delta: -22.6MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2023-08-29 20:52:07,568 INFO L158 Benchmark]: Witness Printer took 2.30ms. Allocated memory is still 157.3MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:07,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 77.6MB. Free memory was 55.4MB in the beginning and 55.2MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.08ms. Allocated memory was 77.6MB in the beginning and 107.0MB in the end (delta: 29.4MB). Free memory was 53.0MB in the beginning and 65.4MB in the end (delta: -12.4MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.56ms. Allocated memory is still 107.0MB. Free memory was 65.4MB in the beginning and 61.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.40ms. Allocated memory is still 107.0MB. Free memory was 61.3MB in the beginning and 59.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 543.73ms. Allocated memory is still 107.0MB. Free memory was 59.0MB in the beginning and 67.0MB in the end (delta: -7.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4734.74ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 66.4MB in the beginning and 89.0MB in the end (delta: -22.6MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Witness Printer took 2.30ms. Allocated memory is still 157.3MB. Free memory is still 89.0MB. 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: 3.8s, 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: 4.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.1s 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, 0.0s SatisfiabilityAnalysisTime, 0.2s 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 [2023-08-29 20:52:07,597 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 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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:52:09,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:52:09,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:52:09,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:52:09,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:52:09,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:52:09,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:52:09,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:52:09,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:52:09,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:52:09,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:52:09,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:52:09,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:52:09,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:52:09,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:52:09,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:52:09,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:52:09,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:52:09,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:52:09,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:52:09,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:52:09,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:52:09,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:52:09,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:52:09,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:52:09,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:52:09,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:52:09,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:52:09,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:52:09,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:52:09,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:52:09,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:52:09,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:52:09,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:52:09,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:52:09,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:52:09,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:52:09,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:52:09,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:52:09,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:52:09,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:52:09,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 20:52:09,692 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:52:09,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:52:09,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:52:09,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:52:09,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:52:09,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:52:09,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:52:09,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:52:09,695 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:52:09,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:52:09,696 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:52:09,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:52:09,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:52:09,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:52:09,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:52:09,696 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:52:09,697 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:52:09,697 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:52:09,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:52:09,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:52:09,697 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 20:52:09,697 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 20:52:09,697 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:52:09,697 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:52:09,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:52:09,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:52:09,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:52:09,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:09,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:52:09,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:52:09,698 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 20:52:09,699 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 20:52:09,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:52:09,699 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:52:09,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:52:09,699 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 20:52:09,699 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:52:09,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:52:09,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:52:09,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:52:09,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:52:09,953 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:52:09,953 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:52:09,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-29 20:52:10,931 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:52:11,214 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:52:11,215 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_2-join.i [2023-08-29 20:52:11,228 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2999dc03/db7c51a8ff1f450cbadf54c5c2f3d3c8/FLAGdd63a88ca [2023-08-29 20:52:11,240 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2999dc03/db7c51a8ff1f450cbadf54c5c2f3d3c8 [2023-08-29 20:52:11,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:52:11,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:52:11,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:11,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:52:11,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:52:11,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea4a661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11, skipping insertion in model container [2023-08-29 20:52:11,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:52:11,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:11,626 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] [2023-08-29 20:52:11,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:11,655 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:52:11,697 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] [2023-08-29 20:52:11,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:11,791 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:11,792 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:11,796 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:52:11,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11 WrapperNode [2023-08-29 20:52:11,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:11,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:11,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:52:11,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:52:11,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,838 INFO L138 Inliner]: procedures = 486, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2023-08-29 20:52:11,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:11,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:52:11,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:52:11,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:52:11,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:52:11,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:52:11,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:52:11,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:52:11,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (1/1) ... [2023-08-29 20:52:11,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:11,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:52:11,914 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) [2023-08-29 20:52:11,919 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 [2023-08-29 20:52:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:52:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:52:11,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 20:52:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 20:52:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:52:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 20:52:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:52:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 20:52:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:52:11,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:52:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 20:52:11,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:52:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 20:52:11,952 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 20:52:11,952 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 20:52:11,953 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:52:12,272 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:52:12,273 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:52:12,451 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:52:12,476 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:52:12,477 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:52:12,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:12 BoogieIcfgContainer [2023-08-29 20:52:12,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:52:12,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:52:12,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:52:12,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:52:12,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:52:11" (1/3) ... [2023-08-29 20:52:12,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500511df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:12, skipping insertion in model container [2023-08-29 20:52:12,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:11" (2/3) ... [2023-08-29 20:52:12,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500511df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:12, skipping insertion in model container [2023-08-29 20:52:12,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:12" (3/3) ... [2023-08-29 20:52:12,511 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2023-08-29 20:52:12,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:52:12,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 20:52:12,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:52:12,561 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 20:52:12,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 216 flow [2023-08-29 20:52:12,639 INFO L130 PetriNetUnfolder]: 4/119 cut-off events. [2023-08-29 20:52:12,639 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:12,641 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. [2023-08-29 20:52:12,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 216 flow [2023-08-29 20:52:12,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 99 transitions, 204 flow [2023-08-29 20:52:12,647 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:52:12,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 99 transitions, 204 flow [2023-08-29 20:52:12,659 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 99 transitions, 204 flow [2023-08-29 20:52:12,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 99 transitions, 204 flow [2023-08-29 20:52:12,686 INFO L130 PetriNetUnfolder]: 4/111 cut-off events. [2023-08-29 20:52:12,686 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:12,686 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. [2023-08-29 20:52:12,687 INFO L119 LiptonReduction]: Number of co-enabled transitions 252 [2023-08-29 20:52:21,346 INFO L134 LiptonReduction]: Checked pairs total: 355 [2023-08-29 20:52:21,346 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-29 20:52:21,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:52:21,359 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;@2c9d0e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:52:21,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 20:52:21,360 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:52:21,360 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:21,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:21,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:52:21,361 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)] === [2023-08-29 20:52:21,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash 413, now seen corresponding path program 1 times [2023-08-29 20:52:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:21,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750675248] [2023-08-29 20:52:21,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:21,372 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 [2023-08-29 20:52:21,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:21,374 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) [2023-08-29 20:52:21,381 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 [2023-08-29 20:52:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:21,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 20:52:21,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:21,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:21,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:21,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750675248] [2023-08-29 20:52:21,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750675248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:21,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:52:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268200451] [2023-08-29 20:52:21,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:21,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:52:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:21,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:52:21,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:52:21,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 226 [2023-08-29 20:52:21,487 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) [2023-08-29 20:52:21,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:21,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 226 [2023-08-29 20:52:21,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:21,523 INFO L130 PetriNetUnfolder]: 8/33 cut-off events. [2023-08-29 20:52:21,524 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:21,524 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. [2023-08-29 20:52:21,525 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-29 20:52:21,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 62 flow [2023-08-29 20:52:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:52:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:52:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 206 transitions. [2023-08-29 20:52:21,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557522123893805 [2023-08-29 20:52:21,534 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 206 transitions. [2023-08-29 20:52:21,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 206 transitions. [2023-08-29 20:52:21,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:21,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 206 transitions. [2023-08-29 20:52:21,538 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) [2023-08-29 20:52:21,542 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) [2023-08-29 20:52:21,542 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) [2023-08-29 20:52:21,543 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 206 transitions. [2023-08-29 20:52:21,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 62 flow [2023-08-29 20:52:21,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:21,546 INFO L231 Difference]: Finished difference. Result has 16 places, 15 transitions, 32 flow [2023-08-29 20:52:21,547 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} [2023-08-29 20:52:21,549 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -6 predicate places. [2023-08-29 20:52:21,549 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 15 transitions, 32 flow [2023-08-29 20:52:21,549 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) [2023-08-29 20:52:21,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:21,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 20:52:21,571 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 [2023-08-29 20:52:21,757 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 [2023-08-29 20:52:21,758 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)] === [2023-08-29 20:52:21,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:21,758 INFO L85 PathProgramCache]: Analyzing trace with hash 13334, now seen corresponding path program 1 times [2023-08-29 20:52:21,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:21,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256437148] [2023-08-29 20:52:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:21,759 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 [2023-08-29 20:52:21,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:21,760 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) [2023-08-29 20:52:21,762 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 [2023-08-29 20:52:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:21,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 20:52:21,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:21,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:21,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:21,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256437148] [2023-08-29 20:52:21,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256437148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:21,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:21,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:21,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300527021] [2023-08-29 20:52:21,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:21,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:21,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:21,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:21,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-29 20:52:21,889 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) [2023-08-29 20:52:21,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:21,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-29 20:52:21,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:21,933 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2023-08-29 20:52:21,933 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:21,934 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. [2023-08-29 20:52:21,934 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 12 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-08-29 20:52:21,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 16 transitions, 62 flow [2023-08-29 20:52:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-08-29 20:52:21,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41887905604719766 [2023-08-29 20:52:21,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-08-29 20:52:21,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-08-29 20:52:21,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:21,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-08-29 20:52:21,939 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) [2023-08-29 20:52:21,940 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) [2023-08-29 20:52:21,941 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) [2023-08-29 20:52:21,941 INFO L175 Difference]: Start difference. First operand has 16 places, 15 transitions, 32 flow. Second operand 3 states and 284 transitions. [2023-08-29 20:52:21,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 16 transitions, 62 flow [2023-08-29 20:52:21,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:52:21,942 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 48 flow [2023-08-29 20:52:21,942 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} [2023-08-29 20:52:21,942 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 20:52:21,943 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 48 flow [2023-08-29 20:52:21,943 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) [2023-08-29 20:52:21,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:21,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 20:52:21,951 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 (3)] Forceful destruction successful, exit code 0 [2023-08-29 20:52:22,151 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 [2023-08-29 20:52:22,151 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)] === [2023-08-29 20:52:22,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 13324, now seen corresponding path program 1 times [2023-08-29 20:52:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:22,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855878785] [2023-08-29 20:52:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:22,153 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 [2023-08-29 20:52:22,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:22,154 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) [2023-08-29 20:52:22,156 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 [2023-08-29 20:52:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:22,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 20:52:22,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:22,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:22,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:22,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855878785] [2023-08-29 20:52:22,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855878785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:22,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:22,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:22,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058071088] [2023-08-29 20:52:22,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:22,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:22,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:22,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:22,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-29 20:52:22,257 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) [2023-08-29 20:52:22,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:22,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-29 20:52:22,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:22,290 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-08-29 20:52:22,290 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:22,290 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. [2023-08-29 20:52:22,290 INFO L137 encePairwiseOnDemand]: 220/226 looper letters, 8 selfloop transitions, 4 changer transitions 1/15 dead transitions. [2023-08-29 20:52:22,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 67 flow [2023-08-29 20:52:22,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-29 20:52:22,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41002949852507375 [2023-08-29 20:52:22,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-29 20:52:22,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-29 20:52:22,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:22,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-29 20:52:22,294 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) [2023-08-29 20:52:22,295 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) [2023-08-29 20:52:22,295 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) [2023-08-29 20:52:22,295 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 48 flow. Second operand 3 states and 278 transitions. [2023-08-29 20:52:22,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 67 flow [2023-08-29 20:52:22,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:52:22,296 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 42 flow [2023-08-29 20:52:22,296 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} [2023-08-29 20:52:22,296 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 20:52:22,296 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 42 flow [2023-08-29 20:52:22,297 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) [2023-08-29 20:52:22,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:22,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 20:52:22,305 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 (4)] Forceful destruction successful, exit code 0 [2023-08-29 20:52:22,505 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 [2023-08-29 20:52:22,505 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)] === [2023-08-29 20:52:22,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash 12538810, now seen corresponding path program 1 times [2023-08-29 20:52:22,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:22,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395054761] [2023-08-29 20:52:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:22,507 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 [2023-08-29 20:52:22,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:22,508 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) [2023-08-29 20:52:22,510 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 [2023-08-29 20:52:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:22,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 20:52:22,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:22,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:22,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395054761] [2023-08-29 20:52:22,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395054761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:22,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192943223] [2023-08-29 20:52:22,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:22,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-29 20:52:22,594 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) [2023-08-29 20:52:22,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:22,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-29 20:52:22,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:22,635 INFO L130 PetriNetUnfolder]: 5/31 cut-off events. [2023-08-29 20:52:22,635 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 20:52:22,635 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. [2023-08-29 20:52:22,636 INFO L137 encePairwiseOnDemand]: 221/226 looper letters, 14 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2023-08-29 20:52:22,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 105 flow [2023-08-29 20:52:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:22,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-29 20:52:22,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174041297935103 [2023-08-29 20:52:22,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-29 20:52:22,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-29 20:52:22,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:22,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-29 20:52:22,639 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) [2023-08-29 20:52:22,640 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) [2023-08-29 20:52:22,640 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) [2023-08-29 20:52:22,640 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 42 flow. Second operand 3 states and 283 transitions. [2023-08-29 20:52:22,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 105 flow [2023-08-29 20:52:22,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 20 transitions, 79 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-29 20:52:22,641 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 58 flow [2023-08-29 20:52:22,641 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} [2023-08-29 20:52:22,642 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 20:52:22,642 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 58 flow [2023-08-29 20:52:22,642 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) [2023-08-29 20:52:22,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:22,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:22,653 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 [2023-08-29 20:52:22,850 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 [2023-08-29 20:52:22,851 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)] === [2023-08-29 20:52:22,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 388707919, now seen corresponding path program 1 times [2023-08-29 20:52:22,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:22,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286012161] [2023-08-29 20:52:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:22,852 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 [2023-08-29 20:52:22,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:22,853 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) [2023-08-29 20:52:22,872 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 [2023-08-29 20:52:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:22,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 20:52:22,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:22,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:22,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:22,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286012161] [2023-08-29 20:52:22,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286012161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:22,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:22,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:22,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868189180] [2023-08-29 20:52:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:22,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:22,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:22,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:23,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 226 [2023-08-29 20:52:23,051 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) [2023-08-29 20:52:23,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:23,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 226 [2023-08-29 20:52:23,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:23,092 INFO L130 PetriNetUnfolder]: 4/27 cut-off events. [2023-08-29 20:52:23,092 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 20:52:23,092 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. [2023-08-29 20:52:23,093 INFO L137 encePairwiseOnDemand]: 223/226 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-29 20:52:23,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 82 flow [2023-08-29 20:52:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:23,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-08-29 20:52:23,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41887905604719766 [2023-08-29 20:52:23,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-08-29 20:52:23,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-08-29 20:52:23,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:23,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-08-29 20:52:23,108 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) [2023-08-29 20:52:23,109 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) [2023-08-29 20:52:23,109 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) [2023-08-29 20:52:23,109 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 58 flow. Second operand 3 states and 284 transitions. [2023-08-29 20:52:23,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 82 flow [2023-08-29 20:52:23,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:23,111 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 54 flow [2023-08-29 20:52:23,111 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} [2023-08-29 20:52:23,113 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 20:52:23,113 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 54 flow [2023-08-29 20:52:23,113 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) [2023-08-29 20:52:23,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:23,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:23,138 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 (6)] Ended with exit code 0 [2023-08-29 20:52:23,322 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 [2023-08-29 20:52:23,322 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)] === [2023-08-29 20:52:23,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash 388708961, now seen corresponding path program 1 times [2023-08-29 20:52:23,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:23,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047895436] [2023-08-29 20:52:23,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:23,323 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 [2023-08-29 20:52:23,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:23,338 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) [2023-08-29 20:52:23,375 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 [2023-08-29 20:52:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:23,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 20:52:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:23,504 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-29 20:52:23,505 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 20:52:23,505 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-29 20:52:23,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2023-08-29 20:52:23,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-29 20:52:23,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-29 20:52:23,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2023-08-29 20:52:23,507 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2023-08-29 20:52:23,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-29 20:52:23,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-29 20:52:23,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-29 20:52:23,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2023-08-29 20:52:23,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-08-29 20:52:23,508 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-29 20:52:23,539 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 (7)] Forceful destruction successful, exit code 0 [2023-08-29 20:52:23,709 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 [2023-08-29 20:52:23,709 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-29 20:52:23,713 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:52:23,713 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:52:23,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:52:23 BasicIcfg [2023-08-29 20:52:23,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:52:23,726 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:52:23,726 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:52:23,726 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:52:23,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:12" (3/4) ... [2023-08-29 20:52:23,728 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 20:52:23,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:52:23,729 INFO L158 Benchmark]: Toolchain (without parser) took 12486.07ms. Allocated memory was 58.7MB in the beginning and 125.8MB in the end (delta: 67.1MB). Free memory was 33.7MB in the beginning and 80.3MB in the end (delta: -46.6MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2023-08-29 20:52:23,729 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 26.4MB in the beginning and 26.4MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:23,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.75ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 33.5MB in the beginning and 45.4MB in the end (delta: -11.9MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-08-29 20:52:23,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.65ms. Allocated memory is still 73.4MB. Free memory was 45.4MB in the beginning and 42.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:23,730 INFO L158 Benchmark]: Boogie Preprocessor took 43.70ms. Allocated memory is still 73.4MB. Free memory was 42.2MB in the beginning and 38.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:52:23,730 INFO L158 Benchmark]: RCFGBuilder took 595.24ms. Allocated memory is still 73.4MB. Free memory was 38.8MB in the beginning and 29.3MB in the end (delta: 9.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 20:52:23,730 INFO L158 Benchmark]: TraceAbstraction took 11218.25ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 65.6MB in the beginning and 80.3MB in the end (delta: -14.7MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2023-08-29 20:52:23,730 INFO L158 Benchmark]: Witness Printer took 2.32ms. Allocated memory is still 125.8MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:23,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 26.4MB in the beginning and 26.4MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.75ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 33.5MB in the beginning and 45.4MB in the end (delta: -11.9MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.65ms. Allocated memory is still 73.4MB. Free memory was 45.4MB in the beginning and 42.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.70ms. Allocated memory is still 73.4MB. Free memory was 42.2MB in the beginning and 38.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 595.24ms. Allocated memory is still 73.4MB. Free memory was 38.8MB in the beginning and 29.3MB in the end (delta: 9.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11218.25ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 65.6MB in the beginning and 80.3MB in the end (delta: -14.7MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Witness Printer took 2.32ms. Allocated memory is still 125.8MB. Free memory is still 80.3MB. 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: 8.7s, 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: 11.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.2s 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, 0.1s 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 [2023-08-29 20:52:23,769 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