./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:45:38,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:45:38,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:45:38,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:45:38,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:45:38,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:45:38,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:45:38,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:45:38,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:45:38,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:45:38,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:45:38,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:45:38,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:45:38,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:45:38,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:45:38,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:45:38,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:45:38,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:45:38,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:45:38,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:45:38,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:45:38,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:45:38,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:45:38,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:45:38,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:45:38,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:45:38,502 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:45:38,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:45:38,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:45:38,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:45:38,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:45:38,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:45:38,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:45:38,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:45:38,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:45:38,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:45:38,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:45:38,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:45:38,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:45:38,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:45:38,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:45:38,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:45:38,563 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:45:38,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:45:38,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:45:38,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:45:38,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:45:38,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:45:38,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:45:38,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:45:38,567 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:45:38,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:45:38,568 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:45:38,568 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:45:38,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:45:38,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:45:38,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:45:38,569 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:45:38,569 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:45:38,569 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:45:38,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:45:38,569 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:45:38,569 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:45:38,570 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:45:38,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:45:38,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:45:38,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:45:38,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:45:38,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:45:38,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:45:38,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:45:38,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:45:38,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:45:38,571 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:45:38,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:45:38,572 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:45:38,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:45:38,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:45:38,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:45:38,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:45:38,912 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:45:38,912 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:45:38,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-31 23:45:40,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:45:40,343 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:45:40,343 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-31 23:45:40,356 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d646ad29/835e60348ce94661804ad3c9bf64d25e/FLAG663a9fa48 [2023-08-31 23:45:40,369 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d646ad29/835e60348ce94661804ad3c9bf64d25e [2023-08-31 23:45:40,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:45:40,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:45:40,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:40,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:45:40,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:45:40,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec4f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40, skipping insertion in model container [2023-08-31 23:45:40,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:45:40,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:45:40,634 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2023-08-31 23:45:40,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:45:40,664 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:45:40,717 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2023-08-31 23:45:40,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:45:40,762 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:45:40,763 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:45:40,769 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:45:40,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40 WrapperNode [2023-08-31 23:45:40,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:40,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:45:40,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:45:40,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:45:40,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,831 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 117 [2023-08-31 23:45:40,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:45:40,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:45:40,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:45:40,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:45:40,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,868 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:45:40,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:45:40,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:45:40,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:45:40,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (1/1) ... [2023-08-31 23:45:40,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:45:40,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:45:40,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:45:40,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:45:40,972 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-08-31 23:45:40,973 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-08-31 23:45:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:45:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:45:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:45:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:45:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:45:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:45:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:45:40,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:45:40,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:45:40,975 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:45:41,145 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:45:41,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:45:41,392 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:45:41,420 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:45:41,424 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:45:41,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:41 BoogieIcfgContainer [2023-08-31 23:45:41,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:45:41,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:45:41,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:45:41,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:45:41,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:45:40" (1/3) ... [2023-08-31 23:45:41,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e2d2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:45:41, skipping insertion in model container [2023-08-31 23:45:41,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:40" (2/3) ... [2023-08-31 23:45:41,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e2d2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:45:41, skipping insertion in model container [2023-08-31 23:45:41,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:41" (3/3) ... [2023-08-31 23:45:41,442 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-08-31 23:45:41,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:45:41,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-31 23:45:41,457 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:45:41,506 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:45:41,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 223 flow [2023-08-31 23:45:41,578 INFO L130 PetriNetUnfolder]: 6/108 cut-off events. [2023-08-31 23:45:41,578 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:41,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 108 events. 6/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-08-31 23:45:41,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 109 transitions, 223 flow [2023-08-31 23:45:41,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 108 transitions, 219 flow [2023-08-31 23:45:41,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:45:41,599 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 108 transitions, 219 flow [2023-08-31 23:45:41,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 108 transitions, 219 flow [2023-08-31 23:45:41,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 108 transitions, 219 flow [2023-08-31 23:45:41,625 INFO L130 PetriNetUnfolder]: 6/108 cut-off events. [2023-08-31 23:45:41,626 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:41,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 108 events. 6/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-08-31 23:45:41,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-08-31 23:45:44,182 INFO L134 LiptonReduction]: Checked pairs total: 3741 [2023-08-31 23:45:44,182 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-31 23:45:44,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:45:44,203 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;@1f9165e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:45:44,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-31 23:45:44,204 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:45:44,205 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:44,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:44,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:45:44,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:44,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:44,210 INFO L85 PathProgramCache]: Analyzing trace with hash 435, now seen corresponding path program 1 times [2023-08-31 23:45:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:44,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379903659] [2023-08-31 23:45:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:44,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:44,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379903659] [2023-08-31 23:45:44,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379903659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:44,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:44,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:45:44,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407031610] [2023-08-31 23:45:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:44,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:45:44,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:44,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:45:44,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:45:44,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 227 [2023-08-31 23:45:44,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:44,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 227 [2023-08-31 23:45:44,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:44,464 INFO L130 PetriNetUnfolder]: 61/118 cut-off events. [2023-08-31 23:45:44,465 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:44,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 118 events. 61/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 348 event pairs, 40 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 230. Up to 117 conditions per place. [2023-08-31 23:45:44,467 INFO L137 encePairwiseOnDemand]: 225/227 looper letters, 17 selfloop transitions, 0 changer transitions 1/19 dead transitions. [2023-08-31 23:45:44,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 77 flow [2023-08-31 23:45:44,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:45:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:45:44,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 226 transitions. [2023-08-31 23:45:44,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4977973568281938 [2023-08-31 23:45:44,484 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 226 transitions. [2023-08-31 23:45:44,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 226 transitions. [2023-08-31 23:45:44,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:44,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 226 transitions. [2023-08-31 23:45:44,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.0) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,500 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,502 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 45 flow. Second operand 2 states and 226 transitions. [2023-08-31 23:45:44,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 77 flow [2023-08-31 23:45:44,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:45:44,507 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 38 flow [2023-08-31 23:45:44,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-08-31 23:45:44,512 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-31 23:45:44,512 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 38 flow [2023-08-31 23:45:44,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:44,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:45:44,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:45:44,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:44,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash 13277525, now seen corresponding path program 1 times [2023-08-31 23:45:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:44,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951336266] [2023-08-31 23:45:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:44,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:44,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:44,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951336266] [2023-08-31 23:45:44,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951336266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:44,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:44,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:45:44,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577388634] [2023-08-31 23:45:44,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:44,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:44,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:44,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:44,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 227 [2023-08-31 23:45:44,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:44,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 227 [2023-08-31 23:45:44,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:44,791 INFO L130 PetriNetUnfolder]: 89/179 cut-off events. [2023-08-31 23:45:44,791 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:44,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 179 events. 89/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 627 event pairs, 24 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 354. Up to 89 conditions per place. [2023-08-31 23:45:44,793 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-31 23:45:44,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 31 transitions, 124 flow [2023-08-31 23:45:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-31 23:45:44,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48604992657856094 [2023-08-31 23:45:44,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-31 23:45:44,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-31 23:45:44,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:44,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-31 23:45:44,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,809 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 38 flow. Second operand 3 states and 331 transitions. [2023-08-31 23:45:44,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 31 transitions, 124 flow [2023-08-31 23:45:44,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:45:44,811 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 56 flow [2023-08-31 23:45:44,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-31 23:45:44,812 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-31 23:45:44,812 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 56 flow [2023-08-31 23:45:44,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:44,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:45:44,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:45:44,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:44,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:44,816 INFO L85 PathProgramCache]: Analyzing trace with hash 411563975, now seen corresponding path program 1 times [2023-08-31 23:45:44,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:44,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849744977] [2023-08-31 23:45:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:44,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:44,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:44,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849744977] [2023-08-31 23:45:44,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849744977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:44,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:44,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:45:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724736763] [2023-08-31 23:45:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:44,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:44,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 227 [2023-08-31 23:45:44,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:44,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:44,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 227 [2023-08-31 23:45:44,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:45,013 INFO L130 PetriNetUnfolder]: 116/240 cut-off events. [2023-08-31 23:45:45,013 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-31 23:45:45,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 240 events. 116/240 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 976 event pairs, 58 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 520. Up to 158 conditions per place. [2023-08-31 23:45:45,015 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 25 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-31 23:45:45,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 132 flow [2023-08-31 23:45:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-31 23:45:45,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47283406754772395 [2023-08-31 23:45:45,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-31 23:45:45,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-31 23:45:45,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:45,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-31 23:45:45,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,020 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 56 flow. Second operand 3 states and 322 transitions. [2023-08-31 23:45:45,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 132 flow [2023-08-31 23:45:45,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:45:45,021 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 66 flow [2023-08-31 23:45:45,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-08-31 23:45:45,022 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-08-31 23:45:45,022 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 66 flow [2023-08-31 23:45:45,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:45,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:45:45,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:45:45,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:45,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash -125583019, now seen corresponding path program 1 times [2023-08-31 23:45:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509513256] [2023-08-31 23:45:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:45,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:45,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509513256] [2023-08-31 23:45:45,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509513256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:45,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:45,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:45:45,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671853284] [2023-08-31 23:45:45,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:45,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:45,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:45,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 227 [2023-08-31 23:45:45,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:45,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 227 [2023-08-31 23:45:45,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:45,124 INFO L130 PetriNetUnfolder]: 103/227 cut-off events. [2023-08-31 23:45:45,124 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 23:45:45,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 227 events. 103/227 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 952 event pairs, 59 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 525. Up to 185 conditions per place. [2023-08-31 23:45:45,126 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 25 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-08-31 23:45:45,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 29 transitions, 156 flow [2023-08-31 23:45:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-08-31 23:45:45,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787077826725404 [2023-08-31 23:45:45,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-08-31 23:45:45,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-08-31 23:45:45,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:45,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-08-31 23:45:45,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,131 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 66 flow. Second operand 3 states and 326 transitions. [2023-08-31 23:45:45,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 29 transitions, 156 flow [2023-08-31 23:45:45,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:45:45,134 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 84 flow [2023-08-31 23:45:45,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-31 23:45:45,134 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2023-08-31 23:45:45,135 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 84 flow [2023-08-31 23:45:45,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:45,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:45,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:45:45,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:45,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash 376011605, now seen corresponding path program 1 times [2023-08-31 23:45:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:45,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977063510] [2023-08-31 23:45:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:45,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:45,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977063510] [2023-08-31 23:45:45,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977063510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:45,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:45,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:45:45,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339765562] [2023-08-31 23:45:45,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:45,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:45,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:45,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 227 [2023-08-31 23:45:45,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:45,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 227 [2023-08-31 23:45:45,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:45,310 INFO L130 PetriNetUnfolder]: 81/181 cut-off events. [2023-08-31 23:45:45,311 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-08-31 23:45:45,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 181 events. 81/181 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 718 event pairs, 58 based on Foata normal form. 24/188 useless extension candidates. Maximal degree in co-relation 480. Up to 178 conditions per place. [2023-08-31 23:45:45,312 INFO L137 encePairwiseOnDemand]: 225/227 looper letters, 11 selfloop transitions, 1 changer transitions 7/20 dead transitions. [2023-08-31 23:45:45,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 120 flow [2023-08-31 23:45:45,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-31 23:45:45,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461086637298091 [2023-08-31 23:45:45,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-31 23:45:45,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-31 23:45:45,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:45,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-31 23:45:45,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,321 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 84 flow. Second operand 3 states and 314 transitions. [2023-08-31 23:45:45,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 120 flow [2023-08-31 23:45:45,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:45:45,324 INFO L231 Difference]: Finished difference. Result has 27 places, 13 transitions, 46 flow [2023-08-31 23:45:45,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=27, PETRI_TRANSITIONS=13} [2023-08-31 23:45:45,327 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 5 predicate places. [2023-08-31 23:45:45,327 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 13 transitions, 46 flow [2023-08-31 23:45:45,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:45,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:45,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:45:45,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:45,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:45,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1560128552, now seen corresponding path program 1 times [2023-08-31 23:45:45,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:45,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476615877] [2023-08-31 23:45:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:45,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:45,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:45,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476615877] [2023-08-31 23:45:45,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476615877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:45,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:45,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:45:45,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362462875] [2023-08-31 23:45:45,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:45,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:45:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:45:45,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:45:45,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 227 [2023-08-31 23:45:45,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 13 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:45,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 227 [2023-08-31 23:45:45,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:45,451 INFO L130 PetriNetUnfolder]: 16/55 cut-off events. [2023-08-31 23:45:45,451 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 23:45:45,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 55 events. 16/55 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 190 event pairs, 4 based on Foata normal form. 5/54 useless extension candidates. Maximal degree in co-relation 131. Up to 27 conditions per place. [2023-08-31 23:45:45,452 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 11 selfloop transitions, 2 changer transitions 3/17 dead transitions. [2023-08-31 23:45:45,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 90 flow [2023-08-31 23:45:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:45:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:45:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2023-08-31 23:45:45,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44933920704845814 [2023-08-31 23:45:45,455 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 408 transitions. [2023-08-31 23:45:45,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 408 transitions. [2023-08-31 23:45:45,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:45,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 408 transitions. [2023-08-31 23:45:45,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,459 INFO L175 Difference]: Start difference. First operand has 27 places, 13 transitions, 46 flow. Second operand 4 states and 408 transitions. [2023-08-31 23:45:45,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 90 flow [2023-08-31 23:45:45,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 85 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-31 23:45:45,461 INFO L231 Difference]: Finished difference. Result has 23 places, 12 transitions, 45 flow [2023-08-31 23:45:45,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2023-08-31 23:45:45,463 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-31 23:45:45,463 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 45 flow [2023-08-31 23:45:45,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:45,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:45,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:45:45,468 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:45,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:45,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1121497519, now seen corresponding path program 1 times [2023-08-31 23:45:45,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:45,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375376834] [2023-08-31 23:45:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:45,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:45,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:45,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375376834] [2023-08-31 23:45:45,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375376834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:45,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:45,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:45:45,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671036982] [2023-08-31 23:45:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:45,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:45:45,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:45,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:45:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:45:45,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 227 [2023-08-31 23:45:45,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 45 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:45,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 227 [2023-08-31 23:45:45,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:45,686 INFO L130 PetriNetUnfolder]: 24/86 cut-off events. [2023-08-31 23:45:45,686 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 23:45:45,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 86 events. 24/86 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 327 event pairs, 12 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 224. Up to 47 conditions per place. [2023-08-31 23:45:45,687 INFO L137 encePairwiseOnDemand]: 222/227 looper letters, 19 selfloop transitions, 5 changer transitions 3/27 dead transitions. [2023-08-31 23:45:45,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 147 flow [2023-08-31 23:45:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:45:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:45:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 685 transitions. [2023-08-31 23:45:45,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43108873505349277 [2023-08-31 23:45:45,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 685 transitions. [2023-08-31 23:45:45,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 685 transitions. [2023-08-31 23:45:45,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:45,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 685 transitions. [2023-08-31 23:45:45,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,695 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,696 INFO L175 Difference]: Start difference. First operand has 23 places, 12 transitions, 45 flow. Second operand 7 states and 685 transitions. [2023-08-31 23:45:45,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 147 flow [2023-08-31 23:45:45,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 133 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-31 23:45:45,697 INFO L231 Difference]: Finished difference. Result has 29 places, 15 transitions, 70 flow [2023-08-31 23:45:45,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=15} [2023-08-31 23:45:45,698 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2023-08-31 23:45:45,698 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 15 transitions, 70 flow [2023-08-31 23:45:45,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:45,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:45,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:45,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:45:45,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:45,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash -964034981, now seen corresponding path program 2 times [2023-08-31 23:45:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:45,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162619646] [2023-08-31 23:45:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:45:45,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:45:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:45:45,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 23:45:45,734 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:45:45,735 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-08-31 23:45:45,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-31 23:45:45,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-08-31 23:45:45,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-08-31 23:45:45,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-31 23:45:45,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:45:45,738 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:45,742 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:45:45,742 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:45:45,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:45:45 BasicIcfg [2023-08-31 23:45:45,765 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:45:45,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:45:45,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:45:45,766 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:45:45,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:41" (3/4) ... [2023-08-31 23:45:45,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-31 23:45:45,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:45:45,770 INFO L158 Benchmark]: Toolchain (without parser) took 5397.60ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 37.4MB in the beginning and 34.9MB in the end (delta: 2.5MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2023-08-31 23:45:45,771 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 32.7MB in the beginning and 32.7MB in the end (delta: 36.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:45:45,771 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.91ms. Allocated memory is still 67.1MB. Free memory was 37.2MB in the beginning and 32.8MB in the end (delta: 4.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-08-31 23:45:45,771 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.26ms. Allocated memory is still 67.1MB. Free memory was 32.8MB in the beginning and 30.8MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:45:45,772 INFO L158 Benchmark]: Boogie Preprocessor took 46.70ms. Allocated memory is still 67.1MB. Free memory was 30.8MB in the beginning and 29.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:45:45,772 INFO L158 Benchmark]: RCFGBuilder took 548.41ms. Allocated memory is still 67.1MB. Free memory was 29.1MB in the beginning and 32.2MB in the end (delta: -3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:45:45,772 INFO L158 Benchmark]: TraceAbstraction took 4334.93ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 31.3MB in the beginning and 34.9MB in the end (delta: -3.6MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2023-08-31 23:45:45,773 INFO L158 Benchmark]: Witness Printer took 3.47ms. Allocated memory is still 98.6MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:45:45,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory was 32.7MB in the beginning and 32.7MB in the end (delta: 36.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.91ms. Allocated memory is still 67.1MB. Free memory was 37.2MB in the beginning and 32.8MB in the end (delta: 4.3MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.26ms. Allocated memory is still 67.1MB. Free memory was 32.8MB in the beginning and 30.8MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.70ms. Allocated memory is still 67.1MB. Free memory was 30.8MB in the beginning and 29.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 548.41ms. Allocated memory is still 67.1MB. Free memory was 29.1MB in the beginning and 32.2MB in the end (delta: -3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4334.93ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 31.3MB in the beginning and 34.9MB in the end (delta: -3.6MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. * Witness Printer took 3.47ms. Allocated memory is still 98.6MB. Free memory is still 34.9MB. 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: 2.6s, 106 PlacesBefore, 22 PlacesAfterwards, 108 TransitionsBefore, 21 TransitionsAfterwards, 3024 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 3 ChoiceCompositions, 118 TotalNumberOfCompositions, 3741 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2893, independent: 2788, independent conditional: 0, independent unconditional: 2788, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1840, independent: 1811, independent conditional: 0, independent unconditional: 1811, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2893, independent: 977, independent conditional: 0, independent unconditional: 977, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 1840, unknown conditional: 0, unknown unconditional: 1840] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 690]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 690. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=0, lsf=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; [L751] CALL 1 assume_abort_if_not(lse) [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 [L753] 1 return 0; [L736] COND TRUE 0 status == 0 [L737] 0 int local_assertion = !stopped; [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - 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: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: 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, 131 locations, 5 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: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 323 IncrementalHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 23 mSDtfsCounter, 323 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=4, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-31 23:45:45,790 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/pthread-lit/qw2004-2b.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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:45:47,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:45:47,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:45:47,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:45:47,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:45:47,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:45:47,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:45:47,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:45:47,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:45:47,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:45:47,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:45:47,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:45:47,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:45:47,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:45:47,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:45:47,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:45:47,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:45:47,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:45:47,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:45:47,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:45:47,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:45:47,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:45:47,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:45:47,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:45:47,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:45:47,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:45:47,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:45:47,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:45:47,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:45:47,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:45:47,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:45:47,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:45:47,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:45:47,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:45:47,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:45:47,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:45:47,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:45:47,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:45:47,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:45:47,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:45:47,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:45:47,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-31 23:45:47,877 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:45:47,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:45:47,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:45:47,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:45:47,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:45:47,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:45:47,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:45:47,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:45:47,879 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:45:47,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:45:47,885 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:45:47,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:45:47,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:45:47,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:45:47,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:45:47,886 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:45:47,886 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:45:47,887 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:45:47,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:45:47,887 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:45:47,887 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-31 23:45:47,887 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-31 23:45:47,888 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:45:47,888 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:45:47,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:45:47,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:45:47,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:45:47,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:45:47,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:45:47,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:45:47,889 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-31 23:45:47,889 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-31 23:45:47,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:45:47,890 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:45:47,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:45:47,890 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-31 23:45:47,890 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:45:47,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:45:48,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:45:48,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:45:48,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:45:48,191 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:45:48,192 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:45:48,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-31 23:45:49,423 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:45:49,651 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:45:49,652 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-31 23:45:49,666 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/208541b3c/c027aaa9037f4855821c30e5b0966ae3/FLAG33c4ca98a [2023-08-31 23:45:49,679 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/208541b3c/c027aaa9037f4855821c30e5b0966ae3 [2023-08-31 23:45:49,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:45:49,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:45:49,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:49,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:45:49,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:45:49,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:49" (1/1) ... [2023-08-31 23:45:49,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e03bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:49, skipping insertion in model container [2023-08-31 23:45:49,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:49" (1/1) ... [2023-08-31 23:45:49,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:45:49,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:45:50,015 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2023-08-31 23:45:50,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:45:50,054 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:45:50,096 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i[30003,30016] [2023-08-31 23:45:50,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:45:50,156 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:45:50,157 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:45:50,162 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:45:50,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50 WrapperNode [2023-08-31 23:45:50,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:50,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:45:50,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:45:50,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:45:50,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,230 INFO L138 Inliner]: procedures = 178, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 115 [2023-08-31 23:45:50,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:45:50,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:45:50,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:45:50,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:45:50,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,282 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:45:50,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:45:50,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:45:50,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:45:50,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (1/1) ... [2023-08-31 23:45:50,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:45:50,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:45:50,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:45:50,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:45:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-08-31 23:45:50,370 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-08-31 23:45:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:45:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:45:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:45:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:45:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-31 23:45:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-31 23:45:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:45:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:45:50,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:45:50,373 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:45:50,480 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:45:50,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:45:50,775 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:45:50,799 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:45:50,799 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:45:50,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:50 BoogieIcfgContainer [2023-08-31 23:45:50,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:45:50,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:45:50,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:45:50,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:45:50,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:45:49" (1/3) ... [2023-08-31 23:45:50,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d4fed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:45:50, skipping insertion in model container [2023-08-31 23:45:50,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:50" (2/3) ... [2023-08-31 23:45:50,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d4fed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:45:50, skipping insertion in model container [2023-08-31 23:45:50,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:50" (3/3) ... [2023-08-31 23:45:50,820 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-08-31 23:45:50,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:45:50,836 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-31 23:45:50,836 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:45:50,902 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:45:50,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 219 flow [2023-08-31 23:45:50,981 INFO L130 PetriNetUnfolder]: 6/106 cut-off events. [2023-08-31 23:45:50,982 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:50,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 6/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-08-31 23:45:50,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 219 flow [2023-08-31 23:45:50,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 106 transitions, 215 flow [2023-08-31 23:45:50,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:45:51,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 106 transitions, 215 flow [2023-08-31 23:45:51,015 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 106 transitions, 215 flow [2023-08-31 23:45:51,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 215 flow [2023-08-31 23:45:51,054 INFO L130 PetriNetUnfolder]: 6/106 cut-off events. [2023-08-31 23:45:51,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:51,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 6/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-08-31 23:45:51,059 INFO L119 LiptonReduction]: Number of co-enabled transitions 2808 [2023-08-31 23:45:54,796 INFO L134 LiptonReduction]: Checked pairs total: 3457 [2023-08-31 23:45:54,797 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-31 23:45:54,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:45:54,814 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;@268bf306, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:45:54,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-31 23:45:54,816 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:45:54,816 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:54,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:54,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:45:54,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:54,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:54,821 INFO L85 PathProgramCache]: Analyzing trace with hash 425, now seen corresponding path program 1 times [2023-08-31 23:45:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:45:54,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544147368] [2023-08-31 23:45:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:54,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:54,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:45:54,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:45:54,872 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 (2)] Waiting until timeout for monitored process [2023-08-31 23:45:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:54,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-31 23:45:54,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:45:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:54,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:45:54,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:45:54,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544147368] [2023-08-31 23:45:54,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544147368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:54,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:54,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:45:54,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509226683] [2023-08-31 23:45:54,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:54,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:45:54,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:45:54,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:45:54,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:45:54,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 220 [2023-08-31 23:45:54,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:54,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:54,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 220 [2023-08-31 23:45:54,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:55,041 INFO L130 PetriNetUnfolder]: 61/118 cut-off events. [2023-08-31 23:45:55,056 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:55,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 118 events. 61/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 350 event pairs, 40 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 230. Up to 117 conditions per place. [2023-08-31 23:45:55,059 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 17 selfloop transitions, 0 changer transitions 1/19 dead transitions. [2023-08-31 23:45:55,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 77 flow [2023-08-31 23:45:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:45:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:45:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 222 transitions. [2023-08-31 23:45:55,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2023-08-31 23:45:55,083 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 222 transitions. [2023-08-31 23:45:55,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 222 transitions. [2023-08-31 23:45:55,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:55,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 222 transitions. [2023-08-31 23:45:55,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,111 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,112 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 45 flow. Second operand 2 states and 222 transitions. [2023-08-31 23:45:55,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 77 flow [2023-08-31 23:45:55,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:45:55,122 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 38 flow [2023-08-31 23:45:55,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-08-31 23:45:55,135 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-31 23:45:55,135 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 38 flow [2023-08-31 23:45:55,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:55,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:45:55,159 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 (2)] Ended with exit code 0 [2023-08-31 23:45:55,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:55,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:55,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash 12974476, now seen corresponding path program 1 times [2023-08-31 23:45:55,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:45:55,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103836454] [2023-08-31 23:45:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:55,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:55,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:45:55,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:45:55,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-31 23:45:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:55,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:45:55,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:45:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:55,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:45:55,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:45:55,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103836454] [2023-08-31 23:45:55,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103836454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:55,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:55,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:45:55,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370911531] [2023-08-31 23:45:55,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:55,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:55,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:45:55,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:55,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:55,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 220 [2023-08-31 23:45:55,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:55,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 220 [2023-08-31 23:45:55,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:55,570 INFO L130 PetriNetUnfolder]: 89/179 cut-off events. [2023-08-31 23:45:55,571 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:55,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 179 events. 89/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 627 event pairs, 24 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 354. Up to 89 conditions per place. [2023-08-31 23:45:55,577 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-31 23:45:55,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 31 transitions, 124 flow [2023-08-31 23:45:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-08-31 23:45:55,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2023-08-31 23:45:55,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-08-31 23:45:55,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-08-31 23:45:55,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:55,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-08-31 23:45:55,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,591 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 38 flow. Second operand 3 states and 325 transitions. [2023-08-31 23:45:55,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 31 transitions, 124 flow [2023-08-31 23:45:55,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:45:55,592 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 56 flow [2023-08-31 23:45:55,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-31 23:45:55,598 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-31 23:45:55,598 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 56 flow [2023-08-31 23:45:55,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:55,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:45:55,607 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 [2023-08-31 23:45:55,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:55,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:55,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:55,806 INFO L85 PathProgramCache]: Analyzing trace with hash 402172749, now seen corresponding path program 1 times [2023-08-31 23:45:55,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:45:55,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321225107] [2023-08-31 23:45:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:55,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:55,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:45:55,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:45:55,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-31 23:45:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:55,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 23:45:55,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:45:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:55,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:45:55,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:45:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321225107] [2023-08-31 23:45:55,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321225107] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:55,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:45:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081038171] [2023-08-31 23:45:55,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:55,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:45:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:55,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 220 [2023-08-31 23:45:55,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:55,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 220 [2023-08-31 23:45:55,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:55,961 INFO L130 PetriNetUnfolder]: 78/155 cut-off events. [2023-08-31 23:45:55,961 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-31 23:45:55,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 155 events. 78/155 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 524 event pairs, 33 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 342. Up to 124 conditions per place. [2023-08-31 23:45:55,963 INFO L137 encePairwiseOnDemand]: 217/220 looper letters, 24 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-31 23:45:55,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 130 flow [2023-08-31 23:45:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:55,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-08-31 23:45:55,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-08-31 23:45:55,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-08-31 23:45:55,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-08-31 23:45:55,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:55,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-08-31 23:45:55,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,969 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 56 flow. Second operand 3 states and 320 transitions. [2023-08-31 23:45:55,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 130 flow [2023-08-31 23:45:55,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 27 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:45:55,971 INFO L231 Difference]: Finished difference. Result has 24 places, 19 transitions, 58 flow [2023-08-31 23:45:55,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=24, PETRI_TRANSITIONS=19} [2023-08-31 23:45:55,972 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-08-31 23:45:55,972 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 58 flow [2023-08-31 23:45:55,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:55,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:55,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:55,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-31 23:45:56,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:56,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:56,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:56,183 INFO L85 PathProgramCache]: Analyzing trace with hash -59038542, now seen corresponding path program 1 times [2023-08-31 23:45:56,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:45:56,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452893641] [2023-08-31 23:45:56,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:56,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:56,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:45:56,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:45:56,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-31 23:45:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:56,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 23:45:56,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:45:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:56,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:45:56,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:45:56,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452893641] [2023-08-31 23:45:56,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452893641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:56,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:56,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:45:56,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496914189] [2023-08-31 23:45:56,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:56,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:56,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:45:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:56,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 220 [2023-08-31 23:45:56,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:56,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 220 [2023-08-31 23:45:56,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:56,466 INFO L130 PetriNetUnfolder]: 67/134 cut-off events. [2023-08-31 23:45:56,466 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-31 23:45:56,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 134 events. 67/134 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 420 event pairs, 36 based on Foata normal form. 11/117 useless extension candidates. Maximal degree in co-relation 310. Up to 131 conditions per place. [2023-08-31 23:45:56,467 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 12 selfloop transitions, 1 changer transitions 4/18 dead transitions. [2023-08-31 23:45:56,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 90 flow [2023-08-31 23:45:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-08-31 23:45:56,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-31 23:45:56,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-08-31 23:45:56,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-08-31 23:45:56,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:56,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-08-31 23:45:56,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,475 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 58 flow. Second operand 3 states and 308 transitions. [2023-08-31 23:45:56,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 90 flow [2023-08-31 23:45:56,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:45:56,476 INFO L231 Difference]: Finished difference. Result has 23 places, 14 transitions, 46 flow [2023-08-31 23:45:56,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=14} [2023-08-31 23:45:56,478 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-31 23:45:56,478 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 46 flow [2023-08-31 23:45:56,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:56,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:56,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-31 23:45:56,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:56,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:56,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:56,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1868682403, now seen corresponding path program 1 times [2023-08-31 23:45:56,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:45:56,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117047236] [2023-08-31 23:45:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:56,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:56,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:45:56,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:45:56,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-31 23:45:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:56,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 23:45:56,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:45:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:56,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:45:56,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:45:56,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117047236] [2023-08-31 23:45:56,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117047236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:56,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:56,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:45:56,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111539824] [2023-08-31 23:45:56,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:56,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:45:56,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:45:56,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:45:56,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:45:56,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 220 [2023-08-31 23:45:56,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:56,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 220 [2023-08-31 23:45:56,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:56,864 INFO L130 PetriNetUnfolder]: 18/60 cut-off events. [2023-08-31 23:45:56,864 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 23:45:56,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 60 events. 18/60 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 184 event pairs, 3 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 147. Up to 39 conditions per place. [2023-08-31 23:45:56,864 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 17 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2023-08-31 23:45:56,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 22 transitions, 113 flow [2023-08-31 23:45:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:45:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:45:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2023-08-31 23:45:56,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2023-08-31 23:45:56,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2023-08-31 23:45:56,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2023-08-31 23:45:56,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:56,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2023-08-31 23:45:56,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,870 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,870 INFO L175 Difference]: Start difference. First operand has 23 places, 14 transitions, 46 flow. Second operand 4 states and 405 transitions. [2023-08-31 23:45:56,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 22 transitions, 113 flow [2023-08-31 23:45:56,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:45:56,871 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 75 flow [2023-08-31 23:45:56,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-31 23:45:56,872 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-08-31 23:45:56,872 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 75 flow [2023-08-31 23:45:56,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:56,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:56,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:56,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-31 23:45:57,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:57,074 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:57,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash -931385726, now seen corresponding path program 1 times [2023-08-31 23:45:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:45:57,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509513256] [2023-08-31 23:45:57,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:57,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:57,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:45:57,076 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:45:57,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-31 23:45:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:57,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 23:45:57,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:45:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:57,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:45:57,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:45:57,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509513256] [2023-08-31 23:45:57,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509513256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:57,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:57,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:45:57,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608450757] [2023-08-31 23:45:57,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:57,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:57,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:45:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:57,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:57,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 220 [2023-08-31 23:45:57,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:57,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 220 [2023-08-31 23:45:57,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:57,201 INFO L130 PetriNetUnfolder]: 17/64 cut-off events. [2023-08-31 23:45:57,201 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-31 23:45:57,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 64 events. 17/64 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 233 event pairs, 11 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 193. Up to 53 conditions per place. [2023-08-31 23:45:57,202 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 15 selfloop transitions, 0 changer transitions 5/21 dead transitions. [2023-08-31 23:45:57,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 130 flow [2023-08-31 23:45:57,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-08-31 23:45:57,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-31 23:45:57,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-08-31 23:45:57,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-08-31 23:45:57,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:57,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-08-31 23:45:57,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,207 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 75 flow. Second operand 3 states and 308 transitions. [2023-08-31 23:45:57,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 130 flow [2023-08-31 23:45:57,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:45:57,208 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 73 flow [2023-08-31 23:45:57,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-08-31 23:45:57,209 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2023-08-31 23:45:57,209 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 73 flow [2023-08-31 23:45:57,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:57,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:57,219 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 [2023-08-31 23:45:57,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:57,420 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:57,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:57,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1799700272, now seen corresponding path program 1 times [2023-08-31 23:45:57,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:45:57,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070070563] [2023-08-31 23:45:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:57,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:57,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:45:57,422 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:45:57,425 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 (8)] Waiting until timeout for monitored process [2023-08-31 23:45:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:57,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 23:45:57,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:45:57,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:57,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:45:57,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:45:57,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070070563] [2023-08-31 23:45:57,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070070563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:57,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:57,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:45:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622893243] [2023-08-31 23:45:57,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:57,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:45:57,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:45:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:45:57,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:45:57,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 220 [2023-08-31 23:45:57,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:57,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 220 [2023-08-31 23:45:57,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:57,568 INFO L130 PetriNetUnfolder]: 13/51 cut-off events. [2023-08-31 23:45:57,568 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-31 23:45:57,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 51 events. 13/51 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 164 event pairs, 2 based on Foata normal form. 2/52 useless extension candidates. Maximal degree in co-relation 156. Up to 29 conditions per place. [2023-08-31 23:45:57,570 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 13 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2023-08-31 23:45:57,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 115 flow [2023-08-31 23:45:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:45:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:45:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-08-31 23:45:57,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2023-08-31 23:45:57,572 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-08-31 23:45:57,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-08-31 23:45:57,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:57,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-08-31 23:45:57,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,576 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,576 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 73 flow. Second operand 4 states and 398 transitions. [2023-08-31 23:45:57,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 115 flow [2023-08-31 23:45:57,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 113 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 23:45:57,578 INFO L231 Difference]: Finished difference. Result has 30 places, 15 transitions, 75 flow [2023-08-31 23:45:57,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=30, PETRI_TRANSITIONS=15} [2023-08-31 23:45:57,578 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 8 predicate places. [2023-08-31 23:45:57,578 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 15 transitions, 75 flow [2023-08-31 23:45:57,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:57,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:57,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:57,591 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 (8)] Forceful destruction successful, exit code 0 [2023-08-31 23:45:57,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:57,788 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-31 23:45:57,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash -529588829, now seen corresponding path program 1 times [2023-08-31 23:45:57,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:45:57,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579568078] [2023-08-31 23:45:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:57,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:57,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:45:57,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-31 23:45:57,822 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 (9)] Waiting until timeout for monitored process [2023-08-31 23:45:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:45:57,851 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 23:45:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 23:45:57,927 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-31 23:45:57,927 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 23:45:57,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-08-31 23:45:57,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-31 23:45:57,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-08-31 23:45:57,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-08-31 23:45:57,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-31 23:45:57,953 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 (9)] Forceful destruction successful, exit code 0 [2023-08-31 23:45:58,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-31 23:45:58,131 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:58,135 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:45:58,135 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:45:58,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:45:58 BasicIcfg [2023-08-31 23:45:58,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:45:58,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:45:58,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:45:58,162 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:45:58,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:50" (3/4) ... [2023-08-31 23:45:58,164 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-31 23:45:58,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:45:58,165 INFO L158 Benchmark]: Toolchain (without parser) took 8482.63ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 39.6MB in the beginning and 60.1MB in the end (delta: -20.5MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2023-08-31 23:45:58,165 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:45:58,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.88ms. Allocated memory is still 69.2MB. Free memory was 39.4MB in the beginning and 34.2MB in the end (delta: 5.2MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2023-08-31 23:45:58,166 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.29ms. Allocated memory is still 69.2MB. Free memory was 34.0MB in the beginning and 31.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:45:58,166 INFO L158 Benchmark]: Boogie Preprocessor took 58.24ms. Allocated memory is still 69.2MB. Free memory was 31.9MB in the beginning and 48.2MB in the end (delta: -16.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:45:58,167 INFO L158 Benchmark]: RCFGBuilder took 510.35ms. Allocated memory is still 69.2MB. Free memory was 48.2MB in the beginning and 30.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-31 23:45:58,167 INFO L158 Benchmark]: TraceAbstraction took 7358.47ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 30.3MB in the beginning and 60.1MB in the end (delta: -29.8MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. [2023-08-31 23:45:58,167 INFO L158 Benchmark]: Witness Printer took 2.39ms. Allocated memory is still 100.7MB. Free memory is still 60.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:45:58,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 479.88ms. Allocated memory is still 69.2MB. Free memory was 39.4MB in the beginning and 34.2MB in the end (delta: 5.2MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.29ms. Allocated memory is still 69.2MB. Free memory was 34.0MB in the beginning and 31.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.24ms. Allocated memory is still 69.2MB. Free memory was 31.9MB in the beginning and 48.2MB in the end (delta: -16.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 510.35ms. Allocated memory is still 69.2MB. Free memory was 48.2MB in the beginning and 30.9MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7358.47ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 30.3MB in the beginning and 60.1MB in the end (delta: -29.8MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. * Witness Printer took 2.39ms. Allocated memory is still 100.7MB. Free memory is still 60.1MB. 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, 104 PlacesBefore, 22 PlacesAfterwards, 106 TransitionsBefore, 21 TransitionsAfterwards, 2808 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 113 TotalNumberOfCompositions, 3457 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2816, independent: 2719, independent conditional: 0, independent unconditional: 2719, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1682, independent: 1654, independent conditional: 0, independent unconditional: 1654, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2816, independent: 1065, independent conditional: 0, independent unconditional: 1065, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 1682, unknown conditional: 0, unknown unconditional: 1682] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 690]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 690. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; VAL [\result=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1, tmp=0] [L709] 0 int lp = pendingIo; VAL [lp=0, lsf=0, pendingIo=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L712] 0 pendingIo = lp + 1 [L715] 0 return 0; [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() VAL [BCSP_IoIncrement()=0, arg={0:0}, arg={0:0}, pendingIo=1, status=0, stopped=0, stoppingEvent=0, stoppingFlag=1] [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=1, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 [L753] 1 return 0; [L736] COND TRUE 0 status == 0 [L737] 0 int local_assertion = !stopped; [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] 0 reach_error() VAL [\old(cond)=0, cond=0, pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - 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: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: 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, 128 locations, 5 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: 7.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 257 IncrementalHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 8 mSDtfsCounter, 257 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=5, InterpolantAutomatonStates: 22, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 37 ConstructedInterpolants, 6 QuantifiedInterpolants, 167 SizeOfPredicates, 6 NumberOfNonLiveVariables, 356 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-31 23:45:58,192 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