./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 --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 20:52:03,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:52:03,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:52:04,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:52:04,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:52:04,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:52:04,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:52:04,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:52:04,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:52:04,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:52:04,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:52:04,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:52:04,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:52:04,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:52:04,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:52:04,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:52:04,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:52:04,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:52:04,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:52:04,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:52:04,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:52:04,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:52:04,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:52:04,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:52:04,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:52:04,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:52:04,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:52:04,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:52:04,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:52:04,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:52:04,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:52:04,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:52:04,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:52:04,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:52:04,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:52:04,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:52:04,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:52:04,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:52:04,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:52:04,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:52:04,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:52:04,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:52:04,073 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:52:04,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:52:04,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:52:04,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:52:04,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:52:04,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:52:04,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:52:04,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:52:04,076 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:52:04,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:52:04,078 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:52:04,078 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:52:04,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:52:04,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:52:04,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:52:04,079 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:52:04,079 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:52:04,080 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:52:04,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:52:04,080 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:52:04,080 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:52:04,080 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:52:04,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:52:04,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:52:04,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:52:04,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:04,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:52:04,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:52:04,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:52:04,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:52:04,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:52:04,083 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:52:04,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:52:04,083 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:52:04,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:52:04,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:52:04,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:52:04,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:52:04,398 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:52:04,398 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:52:04,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2023-08-29 20:52:05,519 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:52:05,804 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:52:05,804 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2023-08-29 20:52:05,822 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ff4b7c4/21d3352cae6640aba32d524af255104c/FLAGce5b83a02 [2023-08-29 20:52:05,840 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ff4b7c4/21d3352cae6640aba32d524af255104c [2023-08-29 20:52:05,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:52:05,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:52:05,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:05,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:52:05,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:52:05,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:05" (1/1) ... [2023-08-29 20:52:05,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3a9524 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 20:52:05,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:05" (1/1) ... [2023-08-29 20:52:05,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:52:05,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:06,473 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2023-08-29 20:52:06,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:06,521 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:52:06,587 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2023-08-29 20:52:06,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:06,689 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:06,690 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:06,696 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:52:06,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:06 WrapperNode [2023-08-29 20:52:06,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:06,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:06,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:52:06,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:52:06,703 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 20:52:06,725 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 20:52:06,748 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2023-08-29 20:52:06,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:06,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:52:06,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:52:06,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:52:06,757 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 20:52:06,757 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 20:52:06,761 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 20:52:06,762 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 20:52:06,772 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 20:52:06,774 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 20:52:06,778 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 20:52:06,779 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 20:52:06,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:52:06,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:52:06,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:52:06,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:52:06,786 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 20:52:06,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:52:06,834 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 20:52:06,860 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 20:52:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:52:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:52:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:52:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 20:52:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 20:52:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:52:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 20:52:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:52:06,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:52:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:52:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 20:52:06,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 20:52:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:52:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:52:06,878 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 20:52:07,189 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:52:07,193 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:52:07,381 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:52:07,406 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:52:07,406 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:52:07,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:07 BoogieIcfgContainer [2023-08-29 20:52:07,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:52:07,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:52:07,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:52:07,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:52:07,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:52:05" (1/3) ... [2023-08-29 20:52:07,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e19c1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:07, skipping insertion in model container [2023-08-29 20:52:07,416 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 20:52:07,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e19c1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:07, skipping insertion in model container [2023-08-29 20:52:07,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:07" (3/3) ... [2023-08-29 20:52:07,418 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2023-08-29 20:52:07,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:52:07,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 20:52:07,434 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:52:07,478 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 20:52:07,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 105 transitions, 218 flow [2023-08-29 20:52:07,564 INFO L130 PetriNetUnfolder]: 4/124 cut-off events. [2023-08-29 20:52:07,564 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:07,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 4/124 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 237 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 74. Up to 3 conditions per place. [2023-08-29 20:52:07,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 105 transitions, 218 flow [2023-08-29 20:52:07,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 100 transitions, 206 flow [2023-08-29 20:52:07,577 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:52:07,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 100 transitions, 206 flow [2023-08-29 20:52:07,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 100 transitions, 206 flow [2023-08-29 20:52:07,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 206 flow [2023-08-29 20:52:07,607 INFO L130 PetriNetUnfolder]: 4/116 cut-off events. [2023-08-29 20:52:07,608 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:07,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 4/116 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 186 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2023-08-29 20:52:07,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 266 [2023-08-29 20:52:11,683 INFO L134 LiptonReduction]: Checked pairs total: 398 [2023-08-29 20:52:11,684 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-29 20:52:11,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:52:11,716 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;@7c29f7ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:52:11,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 20:52:11,720 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:52:11,720 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:11,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:11,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:52:11,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:11,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash 414, now seen corresponding path program 1 times [2023-08-29 20:52:11,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:11,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735738291] [2023-08-29 20:52:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:11,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:11,908 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 20:52:11,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:11,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735738291] [2023-08-29 20:52:11,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735738291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:11,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:11,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:52:11,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274839878] [2023-08-29 20:52:11,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:52:11,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:52:11,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:52:11,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 223 [2023-08-29 20:52:11,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:11,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:11,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 223 [2023-08-29 20:52:11,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:11,998 INFO L130 PetriNetUnfolder]: 8/35 cut-off events. [2023-08-29 20:52:11,999 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:11,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 35 events. 8/35 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 88 event pairs, 7 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 44. Up to 34 conditions per place. [2023-08-29 20:52:12,000 INFO L137 encePairwiseOnDemand]: 218/223 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-29 20:52:12,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 62 flow [2023-08-29 20:52:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:52:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:52:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2023-08-29 20:52:12,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663677130044843 [2023-08-29 20:52:12,016 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2023-08-29 20:52:12,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2023-08-29 20:52:12,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:12,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2023-08-29 20:52:12,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:12,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 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 20:52:12,032 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 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 20:52:12,033 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 208 transitions. [2023-08-29 20:52:12,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 62 flow [2023-08-29 20:52:12,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:12,037 INFO L231 Difference]: Finished difference. Result has 16 places, 15 transitions, 32 flow [2023-08-29 20:52:12,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=15} [2023-08-29 20:52:12,044 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -6 predicate places. [2023-08-29 20:52:12,045 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 15 transitions, 32 flow [2023-08-29 20:52:12,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:12,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:12,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 20:52:12,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:52:12,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:12,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash 13090, now seen corresponding path program 1 times [2023-08-29 20:52:12,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:12,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124178207] [2023-08-29 20:52:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:12,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:12,192 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 20:52:12,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:12,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124178207] [2023-08-29 20:52:12,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124178207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:12,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:12,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:12,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464404664] [2023-08-29 20:52:12,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:12,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:12,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:12,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:12,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:12,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 223 [2023-08-29 20:52:12,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 15 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:12,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:12,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 223 [2023-08-29 20:52:12,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:12,270 INFO L130 PetriNetUnfolder]: 6/31 cut-off events. [2023-08-29 20:52:12,270 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:12,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 31 events. 6/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 1 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 61. Up to 23 conditions per place. [2023-08-29 20:52:12,271 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-29 20:52:12,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 58 flow [2023-08-29 20:52:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-29 20:52:12,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200298953662182 [2023-08-29 20:52:12,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-29 20:52:12,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-29 20:52:12,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:12,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-29 20:52:12,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:12,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 20:52:12,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 20:52:12,283 INFO L175 Difference]: Start difference. First operand has 16 places, 15 transitions, 32 flow. Second operand 3 states and 281 transitions. [2023-08-29 20:52:12,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 58 flow [2023-08-29 20:52:12,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:52:12,284 INFO L231 Difference]: Finished difference. Result has 18 places, 14 transitions, 36 flow [2023-08-29 20:52:12,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=18, PETRI_TRANSITIONS=14} [2023-08-29 20:52:12,285 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -4 predicate places. [2023-08-29 20:52:12,285 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 14 transitions, 36 flow [2023-08-29 20:52:12,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:12,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:12,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 20:52:12,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:52:12,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:12,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:12,288 INFO L85 PathProgramCache]: Analyzing trace with hash 406197, now seen corresponding path program 1 times [2023-08-29 20:52:12,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:12,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930123292] [2023-08-29 20:52:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:12,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:12,408 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 20:52:12,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930123292] [2023-08-29 20:52:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930123292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:12,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:12,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:12,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339879915] [2023-08-29 20:52:12,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:12,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:12,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:12,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:12,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:12,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 223 [2023-08-29 20:52:12,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 20:52:12,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:12,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 223 [2023-08-29 20:52:12,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:12,459 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-08-29 20:52:12,459 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:12,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 26 events. 6/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 44 event pairs, 6 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 55. Up to 24 conditions per place. [2023-08-29 20:52:12,461 INFO L137 encePairwiseOnDemand]: 221/223 looper letters, 11 selfloop transitions, 0 changer transitions 1/14 dead transitions. [2023-08-29 20:52:12,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 60 flow [2023-08-29 20:52:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-29 20:52:12,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42301943198804187 [2023-08-29 20:52:12,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-29 20:52:12,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-29 20:52:12,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:12,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-29 20:52:12,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:12,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 20:52:12,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 20:52:12,467 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 36 flow. Second operand 3 states and 283 transitions. [2023-08-29 20:52:12,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 60 flow [2023-08-29 20:52:12,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:12,468 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 30 flow [2023-08-29 20:52:12,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-08-29 20:52:12,470 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 20:52:12,470 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 30 flow [2023-08-29 20:52:12,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 20:52:12,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:12,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:12,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:52:12,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:12,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash 386935773, now seen corresponding path program 1 times [2023-08-29 20:52:12,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:12,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730547312] [2023-08-29 20:52:12,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:12,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:12,582 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 20:52:12,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:12,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730547312] [2023-08-29 20:52:12,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730547312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:12,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:12,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749035887] [2023-08-29 20:52:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:12,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:12,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:12,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:12,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 223 [2023-08-29 20:52:12,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:12,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:12,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 223 [2023-08-29 20:52:12,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:12,632 INFO L130 PetriNetUnfolder]: 5/30 cut-off events. [2023-08-29 20:52:12,632 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:12,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 30 events. 5/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 69 event pairs, 1 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 59. Up to 15 conditions per place. [2023-08-29 20:52:12,633 INFO L137 encePairwiseOnDemand]: 216/223 looper letters, 11 selfloop transitions, 6 changer transitions 0/19 dead transitions. [2023-08-29 20:52:12,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 77 flow [2023-08-29 20:52:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:12,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:12,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-08-29 20:52:12,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4260089686098655 [2023-08-29 20:52:12,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-08-29 20:52:12,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-08-29 20:52:12,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:12,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-08-29 20:52:12,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 20:52:12,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 20:52:12,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 20:52:12,638 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 30 flow. Second operand 3 states and 285 transitions. [2023-08-29 20:52:12,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 77 flow [2023-08-29 20:52:12,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 75 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 20:52:12,639 INFO L231 Difference]: Finished difference. Result has 21 places, 18 transitions, 74 flow [2023-08-29 20:52:12,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2023-08-29 20:52:12,641 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-08-29 20:52:12,641 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 74 flow [2023-08-29 20:52:12,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:12,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:12,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:12,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:52:12,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:12,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash 386935883, now seen corresponding path program 1 times [2023-08-29 20:52:12,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:12,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67871613] [2023-08-29 20:52:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:12,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:12,812 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 20:52:12,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:12,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67871613] [2023-08-29 20:52:12,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67871613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:12,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:12,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:12,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625117858] [2023-08-29 20:52:12,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:12,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:52:12,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:52:12,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:52:12,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 223 [2023-08-29 20:52:12,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 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 20:52:12,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:12,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 223 [2023-08-29 20:52:12,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:12,891 INFO L130 PetriNetUnfolder]: 4/26 cut-off events. [2023-08-29 20:52:12,891 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 20:52:12,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 26 events. 4/26 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 1 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 73. Up to 20 conditions per place. [2023-08-29 20:52:12,892 INFO L137 encePairwiseOnDemand]: 220/223 looper letters, 11 selfloop transitions, 3 changer transitions 0/16 dead transitions. [2023-08-29 20:52:12,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 92 flow [2023-08-29 20:52:12,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-29 20:52:12,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155455904334828 [2023-08-29 20:52:12,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-29 20:52:12,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-29 20:52:12,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:12,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-29 20:52:12,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:12,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 20:52:12,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 20:52:12,900 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 74 flow. Second operand 3 states and 278 transitions. [2023-08-29 20:52:12,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 92 flow [2023-08-29 20:52:12,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:12,902 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 60 flow [2023-08-29 20:52:12,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=18, 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=3, PETRI_FLOW=60, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-29 20:52:12,902 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 20:52:12,903 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 60 flow [2023-08-29 20:52:12,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 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 20:52:12,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:12,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 20:52:12,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:52:12,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:12,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:12,904 INFO L85 PathProgramCache]: Analyzing trace with hash -889887168, now seen corresponding path program 1 times [2023-08-29 20:52:12,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:12,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612420244] [2023-08-29 20:52:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:12,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:13,037 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 20:52:13,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:52:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612420244] [2023-08-29 20:52:13,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612420244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:13,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:13,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813886132] [2023-08-29 20:52:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:13,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:52:13,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:52:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:52:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:52:13,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 223 [2023-08-29 20:52:13,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 20:52:13,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:13,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 223 [2023-08-29 20:52:13,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:13,115 INFO L130 PetriNetUnfolder]: 3/22 cut-off events. [2023-08-29 20:52:13,115 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 20:52:13,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 22 events. 3/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 1 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 56. Up to 16 conditions per place. [2023-08-29 20:52:13,115 INFO L137 encePairwiseOnDemand]: 220/223 looper letters, 9 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2023-08-29 20:52:13,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 76 flow [2023-08-29 20:52:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:52:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:52:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2023-08-29 20:52:13,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968609865470852 [2023-08-29 20:52:13,117 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2023-08-29 20:52:13,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2023-08-29 20:52:13,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:13,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2023-08-29 20:52:13,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 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 20:52:13,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 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 20:52:13,121 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 223.0) internal successors, (1115), 5 states have internal predecessors, (1115), 0 states have call successors, (0), 0 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 20:52:13,121 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 60 flow. Second operand 4 states and 354 transitions. [2023-08-29 20:52:13,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 76 flow [2023-08-29 20:52:13,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:13,122 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 52 flow [2023-08-29 20:52:13,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 20:52:13,123 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 20:52:13,123 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 52 flow [2023-08-29 20:52:13,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 20:52:13,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:13,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 20:52:13,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:52:13,124 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:13,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash -889887279, now seen corresponding path program 1 times [2023-08-29 20:52:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:52:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938826691] [2023-08-29 20:52:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:52:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:13,160 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 20:52:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:13,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 20:52:13,190 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 20:52:13,191 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-29 20:52:13,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2023-08-29 20:52:13,192 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-29 20:52:13,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-29 20:52:13,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2023-08-29 20:52:13,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2023-08-29 20:52:13,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-29 20:52:13,193 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-29 20:52:13,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-29 20:52:13,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2023-08-29 20:52:13,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-08-29 20:52:13,194 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-29 20:52:13,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:52:13,195 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:52:13,199 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:52:13,199 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:52:13,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:52:13 BasicIcfg [2023-08-29 20:52:13,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:52:13,219 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:52:13,219 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:52:13,220 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:52:13,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:07" (3/4) ... [2023-08-29 20:52:13,223 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 20:52:13,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:52:13,223 INFO L158 Benchmark]: Toolchain (without parser) took 7380.27ms. Allocated memory was 73.4MB in the beginning and 130.0MB in the end (delta: 56.6MB). Free memory was 48.0MB in the beginning and 91.8MB in the end (delta: -43.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 20:52:13,224 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 73.4MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:13,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 852.75ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 47.8MB in the beginning and 46.6MB in the end (delta: 1.2MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:13,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.57ms. Allocated memory is still 102.8MB. Free memory was 46.6MB in the beginning and 43.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:13,225 INFO L158 Benchmark]: Boogie Preprocessor took 34.99ms. Allocated memory is still 102.8MB. Free memory was 43.5MB in the beginning and 41.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:13,225 INFO L158 Benchmark]: RCFGBuilder took 623.52ms. Allocated memory is still 102.8MB. Free memory was 41.0MB in the beginning and 60.9MB in the end (delta: -19.8MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2023-08-29 20:52:13,225 INFO L158 Benchmark]: TraceAbstraction took 5808.74ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 60.2MB in the beginning and 91.8MB in the end (delta: -31.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:13,226 INFO L158 Benchmark]: Witness Printer took 3.52ms. Allocated memory is still 130.0MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:13,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 73.4MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 852.75ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 47.8MB in the beginning and 46.6MB in the end (delta: 1.2MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.57ms. Allocated memory is still 102.8MB. Free memory was 46.6MB in the beginning and 43.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.99ms. Allocated memory is still 102.8MB. Free memory was 43.5MB in the beginning and 41.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.52ms. Allocated memory is still 102.8MB. Free memory was 41.0MB in the beginning and 60.9MB in the end (delta: -19.8MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5808.74ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 60.2MB in the beginning and 91.8MB in the end (delta: -31.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.52ms. Allocated memory is still 130.0MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 99 PlacesBefore, 22 PlacesAfterwards, 100 TransitionsBefore, 20 TransitionsAfterwards, 266 CoEnabledTransitionPairs, 6 FixpointIterations, 79 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 118 TotalNumberOfCompositions, 398 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 330, independent: 268, independent conditional: 0, independent unconditional: 268, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 175, independent: 153, independent conditional: 0, independent unconditional: 153, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 330, independent: 115, independent conditional: 0, independent unconditional: 115, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 175, unknown conditional: 0, unknown unconditional: 175] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1695. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL, EXPR 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1713] 0 return 0; [L1734] RET, EXPR 0 module_init() [L1734] COND FALSE 0 !(module_init()!=0) [L1735] CALL 0 module_exit() [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={4:0}, pdev=4, status={5:0}, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1726] CALL 0 ldv_assert(pdev==4) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 110 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 225 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 259 IncrementalHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 2 mSDtfsCounter, 259 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=4, InterpolantAutomatonStates: 18, 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, 0.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 136 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 20:52:13,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 --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 20:52:15,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:52:15,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:52:15,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:52:15,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:52:15,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:52:15,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:52:15,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:52:15,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:52:15,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:52:15,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:52:15,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:52:15,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:52:15,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:52:15,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:52:15,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:52:15,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:52:15,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:52:15,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:52:15,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:52:15,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:52:15,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:52:15,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:52:15,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:52:15,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:52:15,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:52:15,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:52:15,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:52:15,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:52:15,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:52:15,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:52:15,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:52:15,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:52:15,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:52:15,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:52:15,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:52:15,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:52:15,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:52:15,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:52:15,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:52:15,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:52:15,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 20:52:15,165 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:52:15,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:52:15,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:52:15,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:52:15,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:52:15,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:52:15,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:52:15,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:52:15,168 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:52:15,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:52:15,169 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:52:15,169 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:52:15,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:52:15,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:52:15,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:52:15,170 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:52:15,170 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:52:15,171 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:52:15,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:52:15,171 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:52:15,171 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 20:52:15,171 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 20:52:15,172 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:52:15,172 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:52:15,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:52:15,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:52:15,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:52:15,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:15,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:52:15,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:52:15,173 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 20:52:15,173 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 20:52:15,174 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:52:15,174 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:52:15,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:52:15,174 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 20:52:15,174 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:52:15,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c7f2059024755e8d2127555397365a96bb56530f6a4795548fd916204307c42 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:52:15,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:52:15,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:52:15,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:52:15,501 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:52:15,501 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:52:15,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_3-join.i [2023-08-29 20:52:16,665 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:52:16,978 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:52:16,979 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i [2023-08-29 20:52:17,005 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d112f56/e88e5a3662e74c0999719f69f3d06cdf/FLAG562ed2e4a [2023-08-29 20:52:17,022 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17d112f56/e88e5a3662e74c0999719f69f3d06cdf [2023-08-29 20:52:17,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:52:17,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:52:17,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:17,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:52:17,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:52:17,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735edfda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17, skipping insertion in model container [2023-08-29 20:52:17,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:52:17,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:17,547 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2023-08-29 20:52:17,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:17,592 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:52:17,658 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_3-join.i[76153,76166] [2023-08-29 20:52:17,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:17,797 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:17,798 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:17,803 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:52:17,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17 WrapperNode [2023-08-29 20:52:17,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:17,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:17,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:52:17,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:52:17,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,887 INFO L138 Inliner]: procedures = 486, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2023-08-29 20:52:17,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:17,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:52:17,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:52:17,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:52:17,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:52:17,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:52:17,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:52:17,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:52:17,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (1/1) ... [2023-08-29 20:52:17,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:17,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:52:17,986 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 20:52:17,988 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 20:52:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:52:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:52:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 20:52:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 20:52:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:52:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 20:52:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:52:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 20:52:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:52:18,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:52:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 20:52:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:52:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 20:52:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 20:52:18,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 20:52:18,017 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 20:52:18,358 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:52:18,360 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:52:18,595 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:52:18,636 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:52:18,636 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:52:18,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:18 BoogieIcfgContainer [2023-08-29 20:52:18,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:52:18,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:52:18,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:52:18,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:52:18,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:52:17" (1/3) ... [2023-08-29 20:52:18,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4628e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:18, skipping insertion in model container [2023-08-29 20:52:18,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:17" (2/3) ... [2023-08-29 20:52:18,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4628e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:18, skipping insertion in model container [2023-08-29 20:52:18,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:18" (3/3) ... [2023-08-29 20:52:18,647 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_3-join.i [2023-08-29 20:52:18,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:52:18,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 20:52:18,668 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:52:18,717 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 20:52:18,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 216 flow [2023-08-29 20:52:18,802 INFO L130 PetriNetUnfolder]: 4/122 cut-off events. [2023-08-29 20:52:18,803 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:18,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 122 events. 4/122 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 234 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 73. Up to 3 conditions per place. [2023-08-29 20:52:18,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 216 flow [2023-08-29 20:52:18,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 99 transitions, 204 flow [2023-08-29 20:52:18,813 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:52:18,821 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 99 transitions, 204 flow [2023-08-29 20:52:18,824 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 99 transitions, 204 flow [2023-08-29 20:52:18,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 99 transitions, 204 flow [2023-08-29 20:52:18,844 INFO L130 PetriNetUnfolder]: 4/114 cut-off events. [2023-08-29 20:52:18,844 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:18,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 114 events. 4/114 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 183 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2023-08-29 20:52:18,845 INFO L119 LiptonReduction]: Number of co-enabled transitions 252 [2023-08-29 20:52:27,105 INFO L134 LiptonReduction]: Checked pairs total: 369 [2023-08-29 20:52:27,105 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-29 20:52:27,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:52:27,122 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;@43a1b060, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:52:27,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 20:52:27,124 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:52:27,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:27,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:27,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:52:27,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:27,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:27,129 INFO L85 PathProgramCache]: Analyzing trace with hash 411, now seen corresponding path program 1 times [2023-08-29 20:52:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:27,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511591137] [2023-08-29 20:52:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:27,141 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 20:52:27,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:27,147 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 20:52:27,148 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 20:52:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:27,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 20:52:27,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:27,258 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 20:52:27,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:27,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:27,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511591137] [2023-08-29 20:52:27,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511591137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:27,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:27,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:52:27,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004449440] [2023-08-29 20:52:27,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:27,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:52:27,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:52:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:52:27,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 220 [2023-08-29 20:52:27,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:27,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:27,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 220 [2023-08-29 20:52:27,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:27,384 INFO L130 PetriNetUnfolder]: 8/35 cut-off events. [2023-08-29 20:52:27,385 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 20:52:27,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 35 events. 8/35 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 93 event pairs, 7 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 44. Up to 34 conditions per place. [2023-08-29 20:52:27,386 INFO L137 encePairwiseOnDemand]: 215/220 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2023-08-29 20:52:27,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 62 flow [2023-08-29 20:52:27,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:52:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:52:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 206 transitions. [2023-08-29 20:52:27,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2023-08-29 20:52:27,409 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 206 transitions. [2023-08-29 20:52:27,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 206 transitions. [2023-08-29 20:52:27,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:27,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 206 transitions. [2023-08-29 20:52:27,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 103.0) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:27,434 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 20:52:27,435 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 20:52:27,437 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 206 transitions. [2023-08-29 20:52:27,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 62 flow [2023-08-29 20:52:27,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:27,440 INFO L231 Difference]: Finished difference. Result has 16 places, 15 transitions, 32 flow [2023-08-29 20:52:27,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=15} [2023-08-29 20:52:27,445 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -6 predicate places. [2023-08-29 20:52:27,445 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 15 transitions, 32 flow [2023-08-29 20:52:27,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:27,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:27,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 20:52:27,459 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 20:52:27,656 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 20:52:27,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:27,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash 13021, now seen corresponding path program 1 times [2023-08-29 20:52:27,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:27,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137121052] [2023-08-29 20:52:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:27,658 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 20:52:27,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:27,660 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 20:52:27,691 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 20:52:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:27,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 20:52:27,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:27,761 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 20:52:27,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:27,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:27,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137121052] [2023-08-29 20:52:27,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137121052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:27,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:27,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:52:27,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371075168] [2023-08-29 20:52:27,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:27,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:27,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:27,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 220 [2023-08-29 20:52:27,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 15 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:27,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:27,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 220 [2023-08-29 20:52:27,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:27,880 INFO L130 PetriNetUnfolder]: 6/31 cut-off events. [2023-08-29 20:52:27,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:27,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 31 events. 6/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 77 event pairs, 1 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 61. Up to 23 conditions per place. [2023-08-29 20:52:27,881 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-29 20:52:27,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 58 flow [2023-08-29 20:52:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-29 20:52:27,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2023-08-29 20:52:27,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-29 20:52:27,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-29 20:52:27,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:27,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-29 20:52:27,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:27,890 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 20:52:27,891 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 20:52:27,891 INFO L175 Difference]: Start difference. First operand has 16 places, 15 transitions, 32 flow. Second operand 3 states and 278 transitions. [2023-08-29 20:52:27,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 58 flow [2023-08-29 20:52:27,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:52:27,892 INFO L231 Difference]: Finished difference. Result has 18 places, 14 transitions, 36 flow [2023-08-29 20:52:27,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=18, PETRI_TRANSITIONS=14} [2023-08-29 20:52:27,893 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -4 predicate places. [2023-08-29 20:52:27,893 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 14 transitions, 36 flow [2023-08-29 20:52:27,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:27,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:27,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 20:52:27,907 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 20:52:28,104 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 20:52:28,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:28,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash 403778, now seen corresponding path program 1 times [2023-08-29 20:52:28,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:28,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131658794] [2023-08-29 20:52:28,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:28,107 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 20:52:28,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:28,108 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 20:52:28,111 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 20:52:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:28,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 20:52:28,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:28,217 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 20:52:28,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:28,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131658794] [2023-08-29 20:52:28,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131658794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:28,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:28,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:28,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303358710] [2023-08-29 20:52:28,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:28,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:28,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:28,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:28,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:28,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 220 [2023-08-29 20:52:28,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 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 20:52:28,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:28,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 220 [2023-08-29 20:52:28,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:28,297 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-08-29 20:52:28,297 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:28,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 26 events. 6/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 46 event pairs, 6 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 55. Up to 24 conditions per place. [2023-08-29 20:52:28,298 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 11 selfloop transitions, 0 changer transitions 1/14 dead transitions. [2023-08-29 20:52:28,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 60 flow [2023-08-29 20:52:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:28,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-29 20:52:28,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2023-08-29 20:52:28,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-29 20:52:28,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-29 20:52:28,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:28,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-29 20:52:28,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 20:52:28,309 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 20:52:28,309 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 20:52:28,310 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 36 flow. Second operand 3 states and 280 transitions. [2023-08-29 20:52:28,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 60 flow [2023-08-29 20:52:28,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:28,311 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 30 flow [2023-08-29 20:52:28,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2023-08-29 20:52:28,312 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-29 20:52:28,313 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 30 flow [2023-08-29 20:52:28,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 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 20:52:28,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:28,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:28,324 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 20:52:28,524 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 20:52:28,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:28,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash 388719853, now seen corresponding path program 1 times [2023-08-29 20:52:28,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:28,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819909994] [2023-08-29 20:52:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:28,526 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 20:52:28,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:28,528 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 20:52:28,537 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 20:52:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:28,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 20:52:28,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:28,643 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 20:52:28,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:28,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:28,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819909994] [2023-08-29 20:52:28,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819909994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:28,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:28,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113401929] [2023-08-29 20:52:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:28,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:52:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:52:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:52:28,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 220 [2023-08-29 20:52:28,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:28,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:28,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 220 [2023-08-29 20:52:28,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:28,718 INFO L130 PetriNetUnfolder]: 5/30 cut-off events. [2023-08-29 20:52:28,718 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:52:28,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 30 events. 5/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 71 event pairs, 1 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 59. Up to 15 conditions per place. [2023-08-29 20:52:28,718 INFO L137 encePairwiseOnDemand]: 213/220 looper letters, 11 selfloop transitions, 6 changer transitions 0/19 dead transitions. [2023-08-29 20:52:28,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 77 flow [2023-08-29 20:52:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:52:28,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:52:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-08-29 20:52:28,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2023-08-29 20:52:28,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-08-29 20:52:28,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-08-29 20:52:28,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:28,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-08-29 20:52:28,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 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 20:52:28,725 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 20:52:28,725 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 20:52:28,725 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 30 flow. Second operand 3 states and 282 transitions. [2023-08-29 20:52:28,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 77 flow [2023-08-29 20:52:28,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 75 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 20:52:28,726 INFO L231 Difference]: Finished difference. Result has 21 places, 18 transitions, 74 flow [2023-08-29 20:52:28,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2023-08-29 20:52:28,727 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-08-29 20:52:28,727 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 74 flow [2023-08-29 20:52:28,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:52:28,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:28,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:52:28,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-08-29 20:52:28,941 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 20:52:28,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:28,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:28,941 INFO L85 PathProgramCache]: Analyzing trace with hash 388719960, now seen corresponding path program 1 times [2023-08-29 20:52:28,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:28,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524153835] [2023-08-29 20:52:28,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:28,942 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 20:52:28,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:28,944 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 20:52:28,964 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 20:52:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:52:29,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 20:52:29,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:52:29,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 20:52:29,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 20:52:29,227 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 20:52:29,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:52:29,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:52:29,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524153835] [2023-08-29 20:52:29,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524153835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:52:29,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:52:29,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:52:29,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958223944] [2023-08-29 20:52:29,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:52:29,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:52:29,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:52:29,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:52:29,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:52:29,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 220 [2023-08-29 20:52:29,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 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 20:52:29,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:52:29,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 220 [2023-08-29 20:52:29,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:52:29,424 INFO L130 PetriNetUnfolder]: 3/22 cut-off events. [2023-08-29 20:52:29,424 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 20:52:29,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 22 events. 3/22 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 1 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 59. Up to 16 conditions per place. [2023-08-29 20:52:29,424 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 9 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2023-08-29 20:52:29,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 78 flow [2023-08-29 20:52:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:52:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:52:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2023-08-29 20:52:29,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2023-08-29 20:52:29,427 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2023-08-29 20:52:29,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2023-08-29 20:52:29,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:52:29,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2023-08-29 20:52:29,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 20:52:29,431 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 20:52:29,431 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 20:52:29,431 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 74 flow. Second operand 4 states and 355 transitions. [2023-08-29 20:52:29,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 78 flow [2023-08-29 20:52:29,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:52:29,433 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 52 flow [2023-08-29 20:52:29,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 20:52:29,433 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-08-29 20:52:29,434 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 52 flow [2023-08-29 20:52:29,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 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 20:52:29,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:52:29,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 20:52:29,445 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 20:52:29,645 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 20:52:29,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:52:29,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:52:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash -834580676, now seen corresponding path program 1 times [2023-08-29 20:52:29,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:52:29,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904260776] [2023-08-29 20:52:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:52:29,646 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 20:52:29,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:52:29,647 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 20:52:29,650 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 20:52:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:29,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 20:52:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 20:52:29,792 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-29 20:52:29,793 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 20:52:29,794 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-29 20:52:29,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2023-08-29 20:52:29,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-29 20:52:29,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-29 20:52:29,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2023-08-29 20:52:29,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2023-08-29 20:52:29,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-29 20:52:29,796 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-29 20:52:29,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-29 20:52:29,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2023-08-29 20:52:29,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-08-29 20:52:29,797 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-29 20:52:29,821 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 20:52:29,998 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 20:52:29,998 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-29 20:52:30,002 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:52:30,002 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:52:30,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:52:30 BasicIcfg [2023-08-29 20:52:30,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:52:30,024 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:52:30,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:52:30,024 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:52:30,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:18" (3/4) ... [2023-08-29 20:52:30,027 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 20:52:30,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:52:30,027 INFO L158 Benchmark]: Toolchain (without parser) took 13001.78ms. Allocated memory was 65.0MB in the beginning and 98.6MB in the end (delta: 33.6MB). Free memory was 29.6MB in the beginning and 35.3MB in the end (delta: -5.6MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-08-29 20:52:30,028 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 65.0MB. Free memory was 43.3MB in the beginning and 43.3MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:30,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 775.87ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 29.5MB in the beginning and 44.4MB in the end (delta: -15.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-08-29 20:52:30,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.11ms. Allocated memory is still 81.8MB. Free memory was 44.4MB in the beginning and 41.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:52:30,029 INFO L158 Benchmark]: Boogie Preprocessor took 64.06ms. Allocated memory is still 81.8MB. Free memory was 41.0MB in the beginning and 38.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:30,029 INFO L158 Benchmark]: RCFGBuilder took 684.86ms. Allocated memory is still 81.8MB. Free memory was 38.2MB in the beginning and 33.6MB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-29 20:52:30,030 INFO L158 Benchmark]: TraceAbstraction took 11382.88ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 32.8MB in the beginning and 36.1MB in the end (delta: -3.3MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2023-08-29 20:52:30,030 INFO L158 Benchmark]: Witness Printer took 3.03ms. Allocated memory is still 98.6MB. Free memory was 36.1MB in the beginning and 35.3MB in the end (delta: 843.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:52:30,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 65.0MB. Free memory was 43.3MB in the beginning and 43.3MB in the end (delta: 42.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 775.87ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 29.5MB in the beginning and 44.4MB in the end (delta: -15.0MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.11ms. Allocated memory is still 81.8MB. Free memory was 44.4MB in the beginning and 41.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.06ms. Allocated memory is still 81.8MB. Free memory was 41.0MB in the beginning and 38.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 684.86ms. Allocated memory is still 81.8MB. Free memory was 38.2MB in the beginning and 33.6MB in the end (delta: 4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 11382.88ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 32.8MB in the beginning and 36.1MB in the end (delta: -3.3MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * Witness Printer took 3.03ms. Allocated memory is still 98.6MB. Free memory was 36.1MB in the beginning and 35.3MB in the end (delta: 843.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3s, 98 PlacesBefore, 22 PlacesAfterwards, 99 TransitionsBefore, 20 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 6 FixpointIterations, 81 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 116 TotalNumberOfCompositions, 369 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 327, independent: 271, independent conditional: 0, independent unconditional: 271, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 162, independent: 143, independent conditional: 0, independent unconditional: 143, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 327, independent: 128, independent conditional: 0, independent unconditional: 128, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 162, unknown conditional: 0, unknown unconditional: 162] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1695. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL, EXPR 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=0, t1={3:0}] [L1713] 0 return 0; [L1734] RET, EXPR 0 module_init() [L1734] COND FALSE 0 !(module_init()!=0) [L1735] CALL 0 module_exit() [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, mutex={4:0}, pdev=4, status={7:0}, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1726] CALL 0 ldv_assert(pdev==4) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 109 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 193 IncrementalHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 38 mSDtfsCounter, 193 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=4, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 2 NumberOfNonLiveVariables, 221 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-29 20:52:30,063 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