./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 AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:51:54,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:51:54,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:51:54,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:51:54,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:51:54,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:51:54,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:51:54,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:51:54,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:51:54,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:51:54,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:51:54,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:51:54,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:51:54,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:51:54,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:51:54,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:51:54,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:51:54,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:51:54,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:51:54,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:51:54,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:51:54,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:51:54,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:51:54,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:51:54,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:51:54,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:51:54,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:51:54,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:51:54,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:51:54,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:51:54,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:51:54,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:51:54,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:51:54,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:51:54,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:51:54,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:51:54,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:51:54,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:51:54,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:51:54,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:51:54,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:51:54,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:51:54,908 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:51:54,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:51:54,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:51:54,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:51:54,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:51:54,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:51:54,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:51:54,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:51:54,912 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:51:54,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:51:54,913 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:51:54,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:51:54,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:51:54,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:51:54,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:51:54,914 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:51:54,914 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:51:54,915 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:51:54,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:51:54,915 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:51:54,915 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:51:54,915 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:51:54,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:51:54,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:51:54,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:51:54,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:51:54,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:51:54,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:51:54,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:51:54,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:51:54,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:51:54,918 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:51:54,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:51:54,918 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:51:54,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:51:55,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:51:55,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:51:55,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:51:55,298 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:51:55,299 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:51:55,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-29 20:51:56,411 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:51:56,665 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:51:56,666 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-29 20:51:56,683 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f87402d/efd33f2bf72a40b199d63d2c3f423e84/FLAG3751ee53c [2023-08-29 20:51:56,704 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f87402d/efd33f2bf72a40b199d63d2c3f423e84 [2023-08-29 20:51:56,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:51:56,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:51:56,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:51:56,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:51:56,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:51:56,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:51:56" (1/1) ... [2023-08-29 20:51:56,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d3df77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:56, skipping insertion in model container [2023-08-29 20:51:56,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:51:56" (1/1) ... [2023-08-29 20:51:56,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:51:56,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:51:57,085 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] [2023-08-29 20:51:57,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:51:57,112 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:51:57,152 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] [2023-08-29 20:51:57,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:51:57,220 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:51:57,221 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:51:57,226 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:51:57,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57 WrapperNode [2023-08-29 20:51:57,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:51:57,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:51:57,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:51:57,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:51:57,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,291 INFO L138 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 117 [2023-08-29 20:51:57,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:51:57,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:51:57,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:51:57,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:51:57,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,334 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:51:57,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:51:57,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:51:57,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:51:57,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (1/1) ... [2023-08-29 20:51:57,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:51:57,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:51:57,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:51:57,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:51:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-08-29 20:51:57,412 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-08-29 20:51:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:51:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:51:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:51:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:51:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:51:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:51:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:51:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:51:57,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:51:57,415 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:51:57,515 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:51:57,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:51:57,695 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:51:57,723 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:51:57,724 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:51:57,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:57 BoogieIcfgContainer [2023-08-29 20:51:57,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:51:57,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:51:57,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:51:57,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:51:57,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:51:56" (1/3) ... [2023-08-29 20:51:57,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9d842d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:51:57, skipping insertion in model container [2023-08-29 20:51:57,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:51:57" (2/3) ... [2023-08-29 20:51:57,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9d842d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:51:57, skipping insertion in model container [2023-08-29 20:51:57,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:57" (3/3) ... [2023-08-29 20:51:57,756 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-08-29 20:51:57,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:51:57,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 20:51:57,771 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:51:57,867 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:51:57,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 109 transitions, 223 flow [2023-08-29 20:51:57,994 INFO L130 PetriNetUnfolder]: 6/108 cut-off events. [2023-08-29 20:51:57,994 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:58,000 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. [2023-08-29 20:51:58,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 109 transitions, 223 flow [2023-08-29 20:51:58,006 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 108 transitions, 219 flow [2023-08-29 20:51:58,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:51:58,024 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 108 transitions, 219 flow [2023-08-29 20:51:58,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 108 transitions, 219 flow [2023-08-29 20:51:58,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 108 transitions, 219 flow [2023-08-29 20:51:58,066 INFO L130 PetriNetUnfolder]: 6/108 cut-off events. [2023-08-29 20:51:58,069 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:51:58,071 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. [2023-08-29 20:51:58,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 3024 [2023-08-29 20:52:00,624 INFO L134 LiptonReduction]: Checked pairs total: 3741 [2023-08-29 20:52:00,624 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-29 20:52:00,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:52:00,649 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;@225860d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:52:00,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-29 20:52:00,651 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:52:00,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:00,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:00,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:52:00,653 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)] === [2023-08-29 20:52:00,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash 435, now seen corresponding path program 1 times [2023-08-29 20:52:00,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585517745] [2023-08-29 20:52:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:00,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:00,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585517745] [2023-08-29 20:52:00,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585517745] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:00,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:00,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:52:00,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699749525] [2023-08-29 20:52:00,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:00,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:52:00,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:00,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:52:00,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:52:00,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 227 [2023-08-29 20:52:00,791 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) [2023-08-29 20:52:00,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:00,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 227 [2023-08-29 20:52:00,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:00,842 INFO L130 PetriNetUnfolder]: 61/118 cut-off events. [2023-08-29 20:52:00,842 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:00,843 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. [2023-08-29 20:52:00,849 INFO L137 encePairwiseOnDemand]: 225/227 looper letters, 17 selfloop transitions, 0 changer transitions 1/19 dead transitions. [2023-08-29 20:52:00,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 77 flow [2023-08-29 20:52:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:52:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:52:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 226 transitions. [2023-08-29 20:52:00,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4977973568281938 [2023-08-29 20:52:00,869 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 226 transitions. [2023-08-29 20:52:00,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 226 transitions. [2023-08-29 20:52:00,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:00,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 226 transitions. [2023-08-29 20:52:00,875 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) [2023-08-29 20:52:00,880 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) [2023-08-29 20:52:00,880 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) [2023-08-29 20:52:00,898 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 45 flow. Second operand 2 states and 226 transitions. [2023-08-29 20:52:00,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 77 flow [2023-08-29 20:52:00,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:52:00,902 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 38 flow [2023-08-29 20:52:00,904 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} [2023-08-29 20:52:00,907 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 20:52:00,907 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 38 flow [2023-08-29 20:52:00,907 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) [2023-08-29 20:52:00,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:00,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 20:52:00,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:52:00,908 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)] === [2023-08-29 20:52:00,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:00,909 INFO L85 PathProgramCache]: Analyzing trace with hash 13277525, now seen corresponding path program 1 times [2023-08-29 20:52:00,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823952313] [2023-08-29 20:52:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:00,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:01,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823952313] [2023-08-29 20:52:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823952313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:01,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:01,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:01,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729653650] [2023-08-29 20:52:01,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:01,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:01,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:01,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:01,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:01,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 227 [2023-08-29 20:52:01,060 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) [2023-08-29 20:52:01,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:01,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 227 [2023-08-29 20:52:01,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:01,110 INFO L130 PetriNetUnfolder]: 89/179 cut-off events. [2023-08-29 20:52:01,110 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:01,111 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. [2023-08-29 20:52:01,112 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-29 20:52:01,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 31 transitions, 124 flow [2023-08-29 20:52:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:01,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-29 20:52:01,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48604992657856094 [2023-08-29 20:52:01,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-29 20:52:01,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-29 20:52:01,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:01,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-29 20:52:01,119 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) [2023-08-29 20:52:01,121 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) [2023-08-29 20:52:01,121 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) [2023-08-29 20:52:01,121 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 38 flow. Second operand 3 states and 331 transitions. [2023-08-29 20:52:01,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 31 transitions, 124 flow [2023-08-29 20:52:01,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:52:01,123 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 56 flow [2023-08-29 20:52:01,123 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} [2023-08-29 20:52:01,124 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-29 20:52:01,124 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 56 flow [2023-08-29 20:52:01,124 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) [2023-08-29 20:52:01,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:01,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:01,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:52:01,125 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)] === [2023-08-29 20:52:01,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:01,125 INFO L85 PathProgramCache]: Analyzing trace with hash 411563975, now seen corresponding path program 1 times [2023-08-29 20:52:01,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:01,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238630449] [2023-08-29 20:52:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:01,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:01,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:01,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238630449] [2023-08-29 20:52:01,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238630449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:01,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:01,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:01,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327096627] [2023-08-29 20:52:01,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:01,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:01,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:01,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:01,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 227 [2023-08-29 20:52:01,236 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) [2023-08-29 20:52:01,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:01,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 227 [2023-08-29 20:52:01,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:01,300 INFO L130 PetriNetUnfolder]: 116/240 cut-off events. [2023-08-29 20:52:01,301 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-29 20:52:01,301 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. [2023-08-29 20:52:01,303 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 25 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-29 20:52:01,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 132 flow [2023-08-29 20:52:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:01,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-29 20:52:01,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47283406754772395 [2023-08-29 20:52:01,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-29 20:52:01,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-29 20:52:01,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:01,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-29 20:52:01,307 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) [2023-08-29 20:52:01,308 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) [2023-08-29 20:52:01,309 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) [2023-08-29 20:52:01,309 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 56 flow. Second operand 3 states and 322 transitions. [2023-08-29 20:52:01,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 132 flow [2023-08-29 20:52:01,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:01,310 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 66 flow [2023-08-29 20:52:01,310 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} [2023-08-29 20:52:01,311 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-08-29 20:52:01,311 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 66 flow [2023-08-29 20:52:01,312 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) [2023-08-29 20:52:01,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:01,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 20:52:01,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:52:01,312 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)] === [2023-08-29 20:52:01,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:01,313 INFO L85 PathProgramCache]: Analyzing trace with hash -125583019, now seen corresponding path program 1 times [2023-08-29 20:52:01,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:01,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825056522] [2023-08-29 20:52:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:01,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:01,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825056522] [2023-08-29 20:52:01,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825056522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:01,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:01,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:01,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223871504] [2023-08-29 20:52:01,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:01,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:01,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:01,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:01,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:01,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 227 [2023-08-29 20:52:01,403 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) [2023-08-29 20:52:01,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:01,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 227 [2023-08-29 20:52:01,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:01,447 INFO L130 PetriNetUnfolder]: 103/227 cut-off events. [2023-08-29 20:52:01,448 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-29 20:52:01,450 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. [2023-08-29 20:52:01,451 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 25 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-08-29 20:52:01,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 29 transitions, 156 flow [2023-08-29 20:52:01,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-08-29 20:52:01,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787077826725404 [2023-08-29 20:52:01,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-08-29 20:52:01,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-08-29 20:52:01,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:01,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-08-29 20:52:01,458 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) [2023-08-29 20:52:01,464 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) [2023-08-29 20:52:01,465 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) [2023-08-29 20:52:01,465 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 66 flow. Second operand 3 states and 326 transitions. [2023-08-29 20:52:01,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 29 transitions, 156 flow [2023-08-29 20:52:01,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:52:01,469 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 84 flow [2023-08-29 20:52:01,469 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} [2023-08-29 20:52:01,470 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2023-08-29 20:52:01,471 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 84 flow [2023-08-29 20:52:01,471 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) [2023-08-29 20:52:01,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:01,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:01,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:52:01,472 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)] === [2023-08-29 20:52:01,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:01,473 INFO L85 PathProgramCache]: Analyzing trace with hash 376011605, now seen corresponding path program 1 times [2023-08-29 20:52:01,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:01,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420943877] [2023-08-29 20:52:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:01,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:01,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:01,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420943877] [2023-08-29 20:52:01,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420943877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:01,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:01,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:01,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012826676] [2023-08-29 20:52:01,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:01,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:01,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:01,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:01,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 227 [2023-08-29 20:52:01,623 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) [2023-08-29 20:52:01,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:01,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 227 [2023-08-29 20:52:01,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:01,659 INFO L130 PetriNetUnfolder]: 81/181 cut-off events. [2023-08-29 20:52:01,659 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-08-29 20:52:01,660 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. [2023-08-29 20:52:01,660 INFO L137 encePairwiseOnDemand]: 225/227 looper letters, 11 selfloop transitions, 1 changer transitions 7/20 dead transitions. [2023-08-29 20:52:01,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 120 flow [2023-08-29 20:52:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-29 20:52:01,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461086637298091 [2023-08-29 20:52:01,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-29 20:52:01,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-29 20:52:01,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:01,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-29 20:52:01,664 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) [2023-08-29 20:52:01,665 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) [2023-08-29 20:52:01,665 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) [2023-08-29 20:52:01,666 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 84 flow. Second operand 3 states and 314 transitions. [2023-08-29 20:52:01,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 120 flow [2023-08-29 20:52:01,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:01,682 INFO L231 Difference]: Finished difference. Result has 27 places, 13 transitions, 46 flow [2023-08-29 20:52:01,682 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} [2023-08-29 20:52:01,683 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 5 predicate places. [2023-08-29 20:52:01,683 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 13 transitions, 46 flow [2023-08-29 20:52:01,683 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) [2023-08-29 20:52:01,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:01,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:01,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:52:01,684 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)] === [2023-08-29 20:52:01,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:01,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1560128552, now seen corresponding path program 1 times [2023-08-29 20:52:01,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:01,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158441197] [2023-08-29 20:52:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:01,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:01,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:01,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158441197] [2023-08-29 20:52:01,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158441197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:01,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:01,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:52:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666672603] [2023-08-29 20:52:01,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:01,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:52:01,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:01,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:52:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:52:01,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 227 [2023-08-29 20:52:01,755 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) [2023-08-29 20:52:01,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:01,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 227 [2023-08-29 20:52:01,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:01,785 INFO L130 PetriNetUnfolder]: 16/55 cut-off events. [2023-08-29 20:52:01,785 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 20:52:01,786 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. [2023-08-29 20:52:01,786 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 11 selfloop transitions, 2 changer transitions 3/17 dead transitions. [2023-08-29 20:52:01,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 90 flow [2023-08-29 20:52:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:52:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:52:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2023-08-29 20:52:01,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44933920704845814 [2023-08-29 20:52:01,788 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 408 transitions. [2023-08-29 20:52:01,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 408 transitions. [2023-08-29 20:52:01,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:01,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 408 transitions. [2023-08-29 20:52:01,790 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) [2023-08-29 20:52:01,791 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) [2023-08-29 20:52:01,792 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) [2023-08-29 20:52:01,792 INFO L175 Difference]: Start difference. First operand has 27 places, 13 transitions, 46 flow. Second operand 4 states and 408 transitions. [2023-08-29 20:52:01,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 90 flow [2023-08-29 20:52:01,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 85 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-29 20:52:01,793 INFO L231 Difference]: Finished difference. Result has 23 places, 12 transitions, 45 flow [2023-08-29 20:52:01,793 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} [2023-08-29 20:52:01,794 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-29 20:52:01,794 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 45 flow [2023-08-29 20:52:01,795 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) [2023-08-29 20:52:01,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:01,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:01,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:52:01,795 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)] === [2023-08-29 20:52:01,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1121497519, now seen corresponding path program 1 times [2023-08-29 20:52:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:01,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659282756] [2023-08-29 20:52:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:01,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:01,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659282756] [2023-08-29 20:52:01,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659282756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:01,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:01,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:52:01,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194489768] [2023-08-29 20:52:01,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:01,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:52:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:52:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:52:01,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 227 [2023-08-29 20:52:01,875 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) [2023-08-29 20:52:01,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:01,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 227 [2023-08-29 20:52:01,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:01,939 INFO L130 PetriNetUnfolder]: 24/86 cut-off events. [2023-08-29 20:52:01,939 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 20:52:01,940 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. [2023-08-29 20:52:01,940 INFO L137 encePairwiseOnDemand]: 222/227 looper letters, 19 selfloop transitions, 5 changer transitions 3/27 dead transitions. [2023-08-29 20:52:01,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 147 flow [2023-08-29 20:52:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:52:01,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:52:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 685 transitions. [2023-08-29 20:52:01,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43108873505349277 [2023-08-29 20:52:01,943 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 685 transitions. [2023-08-29 20:52:01,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 685 transitions. [2023-08-29 20:52:01,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:01,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 685 transitions. [2023-08-29 20:52:01,945 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) [2023-08-29 20:52:01,948 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) [2023-08-29 20:52:01,948 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) [2023-08-29 20:52:01,948 INFO L175 Difference]: Start difference. First operand has 23 places, 12 transitions, 45 flow. Second operand 7 states and 685 transitions. [2023-08-29 20:52:01,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 147 flow [2023-08-29 20:52:01,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 133 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-29 20:52:01,950 INFO L231 Difference]: Finished difference. Result has 29 places, 15 transitions, 70 flow [2023-08-29 20:52:01,950 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} [2023-08-29 20:52:01,950 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2023-08-29 20:52:01,951 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 15 transitions, 70 flow [2023-08-29 20:52:01,951 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) [2023-08-29 20:52:01,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:01,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:01,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:52:01,952 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)] === [2023-08-29 20:52:01,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:01,952 INFO L85 PathProgramCache]: Analyzing trace with hash -964034981, now seen corresponding path program 2 times [2023-08-29 20:52:01,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:01,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766774593] [2023-08-29 20:52:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:01,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:01,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 20:52:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:01,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 20:52:01,983 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 20:52:01,984 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-08-29 20:52:01,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-29 20:52:01,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-08-29 20:52:01,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-08-29 20:52:01,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-29 20:52:01,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:52:01,997 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:02,000 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:52:02,001 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:52:02,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:52:02 BasicIcfg [2023-08-29 20:52:02,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:52:02,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:52:02,023 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:52:02,023 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:52:02,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:51:57" (3/4) ... [2023-08-29 20:52:02,026 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 20:52:02,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:52:02,027 INFO L158 Benchmark]: Toolchain (without parser) took 5318.37ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 59.9MB in the beginning and 75.9MB in the end (delta: -16.0MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2023-08-29 20:52:02,027 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:02,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 516.68ms. Allocated memory is still 81.8MB. Free memory was 59.9MB in the beginning and 60.2MB in the end (delta: -271.7kB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-08-29 20:52:02,028 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.08ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 57.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:02,028 INFO L158 Benchmark]: Boogie Preprocessor took 52.23ms. Allocated memory is still 81.8MB. Free memory was 57.8MB in the beginning and 56.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:02,028 INFO L158 Benchmark]: RCFGBuilder took 384.73ms. Allocated memory is still 81.8MB. Free memory was 56.5MB in the beginning and 41.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 20:52:02,029 INFO L158 Benchmark]: TraceAbstraction took 4290.57ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 40.6MB in the beginning and 75.9MB in the end (delta: -35.3MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2023-08-29 20:52:02,029 INFO L158 Benchmark]: Witness Printer took 2.99ms. Allocated memory is still 102.8MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:02,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 516.68ms. Allocated memory is still 81.8MB. Free memory was 59.9MB in the beginning and 60.2MB in the end (delta: -271.7kB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.08ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 57.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.23ms. Allocated memory is still 81.8MB. Free memory was 57.8MB in the beginning and 56.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 384.73ms. Allocated memory is still 81.8MB. Free memory was 56.5MB in the beginning and 41.4MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4290.57ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 40.6MB in the beginning and 75.9MB in the end (delta: -35.3MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. * Witness Printer took 2.99ms. Allocated memory is still 102.8MB. Free memory is still 75.9MB. 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: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.2s 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 [2023-08-29 20:52:02,053 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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:52:03,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:52:03,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:52:03,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:52:03,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:52:03,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:52:03,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:52:03,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:52:03,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:52:03,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:52:03,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:52:03,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:52:03,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:52:03,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:52:03,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:52:03,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:52:03,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:52:03,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:52:03,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:52:03,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:52:03,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:52:03,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:52:03,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:52:03,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:52:03,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:52:03,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:52:03,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:52:03,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:52:03,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:52:03,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:52:03,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:52:03,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:52:03,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:52:03,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:52:03,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:52:03,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:52:03,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:52:03,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:52:03,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:52:03,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:52:03,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:52:03,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 20:52:03,999 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:52:03,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:52:04,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:52:04,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:52:04,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:52:04,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:52:04,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:52:04,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:52:04,002 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:52:04,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:52:04,003 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:52:04,004 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:52:04,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:52:04,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:52:04,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:52:04,004 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:52:04,004 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:52:04,005 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:52:04,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:52:04,005 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:52:04,005 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 20:52:04,005 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 20:52:04,005 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:52:04,006 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:52:04,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:52:04,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:52:04,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:52:04,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:04,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:52:04,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:52:04,007 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 20:52:04,007 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 20:52:04,008 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:52:04,008 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:52:04,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:52:04,008 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 20:52:04,008 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:52:04,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:52:04,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:52:04,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:52:04,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:52:04,330 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:52:04,330 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:52:04,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-29 20:52:05,471 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:52:05,744 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:52:05,744 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/qw2004-2b.i [2023-08-29 20:52:05,759 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e27db57d/916aff87e6514ecf99362944a15cf66f/FLAG32bcca4fe [2023-08-29 20:52:05,778 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e27db57d/916aff87e6514ecf99362944a15cf66f [2023-08-29 20:52:05,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:52:05,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:52:05,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:05,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:52:05,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:52:05,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:05" (1/1) ... [2023-08-29 20:52:05,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee1e88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:05, skipping insertion in model container [2023-08-29 20:52:05,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:05" (1/1) ... [2023-08-29 20:52:05,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:52:05,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:06,154 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] [2023-08-29 20:52:06,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:06,188 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:52:06,251 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] [2023-08-29 20:52:06,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:06,298 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:06,299 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:06,305 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:52:06,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06 WrapperNode [2023-08-29 20:52:06,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:06,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:06,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:52:06,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:52:06,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,347 INFO L138 Inliner]: procedures = 178, calls = 36, calls flagged for inlining = 9, calls inlined = 10, statements flattened = 115 [2023-08-29 20:52:06,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:06,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:52:06,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:52:06,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:52:06,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,369 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:52:06,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:52:06,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:52:06,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:52:06,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (1/1) ... [2023-08-29 20:52:06,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:06,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:52:06,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:52:06,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:52:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-08-29 20:52:06,453 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-08-29 20:52:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:52:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:52:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:52:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:52:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 20:52:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 20:52:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:52:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:52:06,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:52:06,455 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:52:06,637 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:52:06,638 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:52:06,860 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:52:06,916 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:52:06,916 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:52:06,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:06 BoogieIcfgContainer [2023-08-29 20:52:06,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:52:06,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:52:06,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:52:06,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:52:06,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:52:05" (1/3) ... [2023-08-29 20:52:06,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efeb189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:06, skipping insertion in model container [2023-08-29 20:52:06,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06" (2/3) ... [2023-08-29 20:52:06,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efeb189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:06, skipping insertion in model container [2023-08-29 20:52:06,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:06" (3/3) ... [2023-08-29 20:52:06,929 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-08-29 20:52:06,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:52:06,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 20:52:06,945 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:52:07,024 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:52:07,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 219 flow [2023-08-29 20:52:07,112 INFO L130 PetriNetUnfolder]: 6/106 cut-off events. [2023-08-29 20:52:07,113 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:07,120 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. [2023-08-29 20:52:07,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 219 flow [2023-08-29 20:52:07,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 106 transitions, 215 flow [2023-08-29 20:52:07,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:52:07,136 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 106 transitions, 215 flow [2023-08-29 20:52:07,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 106 transitions, 215 flow [2023-08-29 20:52:07,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 215 flow [2023-08-29 20:52:07,159 INFO L130 PetriNetUnfolder]: 6/106 cut-off events. [2023-08-29 20:52:07,160 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:07,161 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. [2023-08-29 20:52:07,163 INFO L119 LiptonReduction]: Number of co-enabled transitions 2808 [2023-08-29 20:52:10,916 INFO L134 LiptonReduction]: Checked pairs total: 3457 [2023-08-29 20:52:10,917 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-29 20:52:10,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:52:10,932 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;@6c372f45, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:52:10,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-29 20:52:10,935 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 20:52:10,935 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:10,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:10,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:52:10,936 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)] === [2023-08-29 20:52:10,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash 425, now seen corresponding path program 1 times [2023-08-29 20:52:10,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:10,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812053937] [2023-08-29 20:52:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:10,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:10,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:10,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 20:52:10,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 20:52:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:11,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 20:52:11,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:11,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:11,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:11,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812053937] [2023-08-29 20:52:11,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812053937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:11,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:11,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:52:11,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597558963] [2023-08-29 20:52:11,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:11,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:52:11,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:52:11,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:52:11,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 220 [2023-08-29 20:52:11,047 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) [2023-08-29 20:52:11,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:11,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 220 [2023-08-29 20:52:11,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:11,127 INFO L130 PetriNetUnfolder]: 61/118 cut-off events. [2023-08-29 20:52:11,127 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:11,128 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. [2023-08-29 20:52:11,129 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 17 selfloop transitions, 0 changer transitions 1/19 dead transitions. [2023-08-29 20:52:11,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 77 flow [2023-08-29 20:52:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:52:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:52:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 222 transitions. [2023-08-29 20:52:11,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2023-08-29 20:52:11,156 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 222 transitions. [2023-08-29 20:52:11,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 222 transitions. [2023-08-29 20:52:11,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:11,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 222 transitions. [2023-08-29 20:52:11,161 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) [2023-08-29 20:52:11,165 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) [2023-08-29 20:52:11,166 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) [2023-08-29 20:52:11,168 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 45 flow. Second operand 2 states and 222 transitions. [2023-08-29 20:52:11,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 77 flow [2023-08-29 20:52:11,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:52:11,171 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 38 flow [2023-08-29 20:52:11,182 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} [2023-08-29 20:52:11,187 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 20:52:11,187 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 38 flow [2023-08-29 20:52:11,188 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) [2023-08-29 20:52:11,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:11,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 20:52:11,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 20:52:11,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:11,403 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)] === [2023-08-29 20:52:11,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash 12974476, now seen corresponding path program 1 times [2023-08-29 20:52:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909828453] [2023-08-29 20:52:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:11,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:11,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 20:52:11,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 20:52:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:11,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 20:52:11,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:11,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:11,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909828453] [2023-08-29 20:52:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909828453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:11,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:11,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:11,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536439063] [2023-08-29 20:52:11,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:11,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:11,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:11,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:11,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 220 [2023-08-29 20:52:11,502 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) [2023-08-29 20:52:11,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:11,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 220 [2023-08-29 20:52:11,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:11,609 INFO L130 PetriNetUnfolder]: 89/179 cut-off events. [2023-08-29 20:52:11,609 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:11,612 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. [2023-08-29 20:52:11,615 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-29 20:52:11,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 31 transitions, 124 flow [2023-08-29 20:52:11,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-08-29 20:52:11,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2023-08-29 20:52:11,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-08-29 20:52:11,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-08-29 20:52:11,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:11,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-08-29 20:52:11,630 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) [2023-08-29 20:52:11,633 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) [2023-08-29 20:52:11,634 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) [2023-08-29 20:52:11,634 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 38 flow. Second operand 3 states and 325 transitions. [2023-08-29 20:52:11,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 31 transitions, 124 flow [2023-08-29 20:52:11,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:52:11,635 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 56 flow [2023-08-29 20:52:11,636 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} [2023-08-29 20:52:11,636 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-29 20:52:11,637 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 56 flow [2023-08-29 20:52:11,637 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) [2023-08-29 20:52:11,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:11,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:11,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 20:52:11,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:11,847 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)] === [2023-08-29 20:52:11,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash 402172749, now seen corresponding path program 1 times [2023-08-29 20:52:11,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:11,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407337473] [2023-08-29 20:52:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:11,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:11,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:11,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 20:52:11,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 20:52:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:11,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 20:52:11,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:11,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:11,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407337473] [2023-08-29 20:52:11,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407337473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:11,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:11,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23713331] [2023-08-29 20:52:11,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:11,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:11,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:11,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 220 [2023-08-29 20:52:11,931 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) [2023-08-29 20:52:11,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:11,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 220 [2023-08-29 20:52:11,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:11,999 INFO L130 PetriNetUnfolder]: 78/155 cut-off events. [2023-08-29 20:52:11,999 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-29 20:52:12,000 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. [2023-08-29 20:52:12,001 INFO L137 encePairwiseOnDemand]: 217/220 looper letters, 24 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-29 20:52:12,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 130 flow [2023-08-29 20:52:12,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-08-29 20:52:12,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-08-29 20:52:12,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-08-29 20:52:12,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-08-29 20:52:12,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:12,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-08-29 20:52:12,006 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) [2023-08-29 20:52:12,007 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) [2023-08-29 20:52:12,008 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) [2023-08-29 20:52:12,008 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 56 flow. Second operand 3 states and 320 transitions. [2023-08-29 20:52:12,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 130 flow [2023-08-29 20:52:12,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 27 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:12,010 INFO L231 Difference]: Finished difference. Result has 24 places, 19 transitions, 58 flow [2023-08-29 20:52:12,010 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} [2023-08-29 20:52:12,010 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-08-29 20:52:12,011 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 58 flow [2023-08-29 20:52:12,011 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) [2023-08-29 20:52:12,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:12,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:12,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-29 20:52:12,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:12,221 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)] === [2023-08-29 20:52:12,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:12,221 INFO L85 PathProgramCache]: Analyzing trace with hash -59038542, now seen corresponding path program 1 times [2023-08-29 20:52:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864209204] [2023-08-29 20:52:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:12,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:12,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:12,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 20:52:12,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 20:52:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 20:52:12,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:12,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:12,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:12,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864209204] [2023-08-29 20:52:12,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864209204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:12,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:12,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733542545] [2023-08-29 20:52:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:12,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:12,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:12,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 220 [2023-08-29 20:52:12,451 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) [2023-08-29 20:52:12,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:12,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 220 [2023-08-29 20:52:12,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:12,497 INFO L130 PetriNetUnfolder]: 67/134 cut-off events. [2023-08-29 20:52:12,498 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-29 20:52:12,498 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. [2023-08-29 20:52:12,498 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 12 selfloop transitions, 1 changer transitions 4/18 dead transitions. [2023-08-29 20:52:12,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 90 flow [2023-08-29 20:52:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-08-29 20:52:12,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-29 20:52:12,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-08-29 20:52:12,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-08-29 20:52:12,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:12,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-08-29 20:52:12,503 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) [2023-08-29 20:52:12,505 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) [2023-08-29 20:52:12,505 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) [2023-08-29 20:52:12,505 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 58 flow. Second operand 3 states and 308 transitions. [2023-08-29 20:52:12,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 90 flow [2023-08-29 20:52:12,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:12,507 INFO L231 Difference]: Finished difference. Result has 23 places, 14 transitions, 46 flow [2023-08-29 20:52:12,507 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} [2023-08-29 20:52:12,509 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-08-29 20:52:12,509 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 46 flow [2023-08-29 20:52:12,509 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) [2023-08-29 20:52:12,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:12,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:12,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 20:52:12,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:12,719 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)] === [2023-08-29 20:52:12,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1868682403, now seen corresponding path program 1 times [2023-08-29 20:52:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729287475] [2023-08-29 20:52:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:12,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:12,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:12,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 20:52:12,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 20:52:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:12,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 20:52:12,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:12,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:12,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729287475] [2023-08-29 20:52:12,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729287475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:12,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:12,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:52:12,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635026875] [2023-08-29 20:52:12,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:12,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:52:12,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:12,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:52:12,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:52:12,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 220 [2023-08-29 20:52:12,840 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) [2023-08-29 20:52:12,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:12,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 220 [2023-08-29 20:52:12,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:12,898 INFO L130 PetriNetUnfolder]: 18/60 cut-off events. [2023-08-29 20:52:12,898 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 20:52:12,899 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. [2023-08-29 20:52:12,899 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 17 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2023-08-29 20:52:12,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 22 transitions, 113 flow [2023-08-29 20:52:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:52:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:52:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2023-08-29 20:52:12,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2023-08-29 20:52:12,901 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2023-08-29 20:52:12,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2023-08-29 20:52:12,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:12,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2023-08-29 20:52:12,903 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) [2023-08-29 20:52:12,905 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) [2023-08-29 20:52:12,905 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) [2023-08-29 20:52:12,906 INFO L175 Difference]: Start difference. First operand has 23 places, 14 transitions, 46 flow. Second operand 4 states and 405 transitions. [2023-08-29 20:52:12,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 22 transitions, 113 flow [2023-08-29 20:52:12,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:52:12,908 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 75 flow [2023-08-29 20:52:12,908 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} [2023-08-29 20:52:12,910 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-08-29 20:52:12,910 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 75 flow [2023-08-29 20:52:12,913 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) [2023-08-29 20:52:12,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:12,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:12,927 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 [2023-08-29 20:52:13,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:13,122 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)] === [2023-08-29 20:52:13,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash -931385726, now seen corresponding path program 1 times [2023-08-29 20:52:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279218609] [2023-08-29 20:52:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:13,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:13,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:13,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 20:52:13,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-29 20:52:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:13,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 20:52:13,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:13,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:13,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:13,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279218609] [2023-08-29 20:52:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279218609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:13,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:13,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384822488] [2023-08-29 20:52:13,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:13,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:13,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:13,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:13,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:13,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 220 [2023-08-29 20:52:13,210 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) [2023-08-29 20:52:13,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:13,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 220 [2023-08-29 20:52:13,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:13,251 INFO L130 PetriNetUnfolder]: 17/64 cut-off events. [2023-08-29 20:52:13,251 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-29 20:52:13,251 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. [2023-08-29 20:52:13,252 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 15 selfloop transitions, 0 changer transitions 5/21 dead transitions. [2023-08-29 20:52:13,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 130 flow [2023-08-29 20:52:13,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-08-29 20:52:13,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-29 20:52:13,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-08-29 20:52:13,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-08-29 20:52:13,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:13,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-08-29 20:52:13,254 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) [2023-08-29 20:52:13,256 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) [2023-08-29 20:52:13,256 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) [2023-08-29 20:52:13,256 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 75 flow. Second operand 3 states and 308 transitions. [2023-08-29 20:52:13,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 130 flow [2023-08-29 20:52:13,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:52:13,257 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 73 flow [2023-08-29 20:52:13,257 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} [2023-08-29 20:52:13,258 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 6 predicate places. [2023-08-29 20:52:13,258 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 73 flow [2023-08-29 20:52:13,258 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) [2023-08-29 20:52:13,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:13,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:13,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-29 20:52:13,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:13,468 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)] === [2023-08-29 20:52:13,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1799700272, now seen corresponding path program 1 times [2023-08-29 20:52:13,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:13,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415694929] [2023-08-29 20:52:13,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:13,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:13,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:13,473 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) [2023-08-29 20:52:13,477 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 [2023-08-29 20:52:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:13,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 20:52:13,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:52:13,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:13,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:13,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415694929] [2023-08-29 20:52:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415694929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:13,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:52:13,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278660869] [2023-08-29 20:52:13,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:13,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:52:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:13,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:52:13,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:52:13,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 220 [2023-08-29 20:52:13,564 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) [2023-08-29 20:52:13,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:13,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 220 [2023-08-29 20:52:13,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:13,610 INFO L130 PetriNetUnfolder]: 13/51 cut-off events. [2023-08-29 20:52:13,610 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-29 20:52:13,611 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. [2023-08-29 20:52:13,611 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 13 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2023-08-29 20:52:13,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 115 flow [2023-08-29 20:52:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:52:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:52:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-08-29 20:52:13,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2023-08-29 20:52:13,617 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-08-29 20:52:13,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-08-29 20:52:13,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:13,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-08-29 20:52:13,619 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) [2023-08-29 20:52:13,621 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) [2023-08-29 20:52:13,621 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) [2023-08-29 20:52:13,621 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 73 flow. Second operand 4 states and 398 transitions. [2023-08-29 20:52:13,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 115 flow [2023-08-29 20:52:13,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 113 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 20:52:13,623 INFO L231 Difference]: Finished difference. Result has 30 places, 15 transitions, 75 flow [2023-08-29 20:52:13,623 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} [2023-08-29 20:52:13,624 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 8 predicate places. [2023-08-29 20:52:13,624 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 15 transitions, 75 flow [2023-08-29 20:52:13,624 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) [2023-08-29 20:52:13,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:13,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:13,636 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 [2023-08-29 20:52:13,833 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 [2023-08-29 20:52:13,833 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)] === [2023-08-29 20:52:13,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash -529588829, now seen corresponding path program 1 times [2023-08-29 20:52:13,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:13,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230200766] [2023-08-29 20:52:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:13,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:52:13,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:13,836 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) [2023-08-29 20:52:13,838 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 [2023-08-29 20:52:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:13,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 20:52:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:13,954 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-29 20:52:13,955 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 20:52:13,955 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-08-29 20:52:13,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-29 20:52:13,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-08-29 20:52:13,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-08-29 20:52:13,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-29 20:52:13,983 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 [2023-08-29 20:52:14,158 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 [2023-08-29 20:52:14,159 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:14,162 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:52:14,162 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:52:14,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:52:14 BasicIcfg [2023-08-29 20:52:14,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:52:14,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:52:14,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:52:14,187 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:52:14,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:06" (3/4) ... [2023-08-29 20:52:14,189 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 20:52:14,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:52:14,190 INFO L158 Benchmark]: Toolchain (without parser) took 8408.44ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 46.9MB in the beginning and 66.5MB in the end (delta: -19.6MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2023-08-29 20:52:14,190 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 71.3MB. Free memory was 48.5MB in the beginning and 48.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:14,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.46ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 46.7MB in the beginning and 58.8MB in the end (delta: -12.1MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-08-29 20:52:14,191 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.46ms. Allocated memory is still 86.0MB. Free memory was 58.8MB in the beginning and 56.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:14,191 INFO L158 Benchmark]: Boogie Preprocessor took 26.03ms. Allocated memory is still 86.0MB. Free memory was 56.5MB in the beginning and 54.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:14,192 INFO L158 Benchmark]: RCFGBuilder took 547.29ms. Allocated memory is still 86.0MB. Free memory was 54.7MB in the beginning and 61.7MB in the end (delta: -7.0MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2023-08-29 20:52:14,192 INFO L158 Benchmark]: TraceAbstraction took 7261.49ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 60.8MB in the beginning and 66.5MB in the end (delta: -5.7MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2023-08-29 20:52:14,192 INFO L158 Benchmark]: Witness Printer took 3.00ms. Allocated memory is still 104.9MB. Free memory is still 66.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:14,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 71.3MB. Free memory was 48.5MB in the beginning and 48.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.46ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 46.7MB in the beginning and 58.8MB in the end (delta: -12.1MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.46ms. Allocated memory is still 86.0MB. Free memory was 58.8MB in the beginning and 56.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.03ms. Allocated memory is still 86.0MB. Free memory was 56.5MB in the beginning and 54.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 547.29ms. Allocated memory is still 86.0MB. Free memory was 54.7MB in the beginning and 61.7MB in the end (delta: -7.0MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7261.49ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 60.8MB in the beginning and 66.5MB in the end (delta: -5.7MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Witness Printer took 3.00ms. Allocated memory is still 104.9MB. Free memory is still 66.5MB. 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: 7.1s, 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 [2023-08-29 20:52:14,212 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