./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:33:44,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:33:44,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:33:44,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:33:44,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:33:44,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:33:44,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:33:44,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:33:44,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:33:44,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:33:44,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:33:44,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:33:44,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:33:44,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:33:44,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:33:44,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:33:44,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:33:44,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:33:44,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:33:44,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:33:44,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:33:44,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:33:44,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:33:44,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:33:44,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:33:44,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:33:44,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:33:44,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:33:44,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:33:44,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:33:44,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:33:44,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:33:44,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:33:44,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:33:44,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:33:44,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:33:44,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:33:44,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:33:44,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:33:44,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:33:44,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:33:44,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 02:33:44,895 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:33:44,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:33:44,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:33:44,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:33:44,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:33:44,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:33:44,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:33:44,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:33:44,898 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:33:44,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:33:44,898 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:33:44,899 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:33:44,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:33:44,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:33:44,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:33:44,899 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:33:44,899 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:33:44,900 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:33:44,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:33:44,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:33:44,900 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:33:44,900 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:33:44,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:33:44,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:33:44,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:33:44,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:33:44,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:33:44,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:33:44,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 02:33:44,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 02:33:44,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:33:44,902 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:33:44,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:33:44,903 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:33:44,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:33:45,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:33:45,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:33:45,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:33:45,168 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:33:45,169 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:33:45,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-08-30 02:33:46,186 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:33:46,374 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:33:46,375 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-08-30 02:33:46,385 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50fde02e0/a1c3ed96ed88484c94cd9a49950cbc8a/FLAG832e9436c [2023-08-30 02:33:46,394 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50fde02e0/a1c3ed96ed88484c94cd9a49950cbc8a [2023-08-30 02:33:46,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:33:46,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:33:46,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:33:46,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:33:46,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:33:46,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34661ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46, skipping insertion in model container [2023-08-30 02:33:46,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:33:46,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:33:46,615 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-08-30 02:33:46,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:33:46,632 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:33:46,678 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-08-30 02:33:46,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:33:46,718 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:33:46,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46 WrapperNode [2023-08-30 02:33:46,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:33:46,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:33:46,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:33:46,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:33:46,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,760 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-08-30 02:33:46,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:33:46,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:33:46,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:33:46,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:33:46,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,792 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:33:46,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:33:46,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:33:46,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:33:46,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (1/1) ... [2023-08-30 02:33:46,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:33:46,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:33:46,821 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) [2023-08-30 02:33:46,828 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 [2023-08-30 02:33:46,846 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 02:33:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 02:33:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 02:33:46,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:33:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:33:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:33:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 02:33:46,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:33:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:33:46,849 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 02:33:46,973 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:33:46,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:33:47,116 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:33:47,120 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:33:47,120 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 02:33:47,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:33:47 BoogieIcfgContainer [2023-08-30 02:33:47,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:33:47,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:33:47,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:33:47,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:33:47,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:33:46" (1/3) ... [2023-08-30 02:33:47,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5094356e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:33:47, skipping insertion in model container [2023-08-30 02:33:47,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:46" (2/3) ... [2023-08-30 02:33:47,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5094356e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:33:47, skipping insertion in model container [2023-08-30 02:33:47,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:33:47" (3/3) ... [2023-08-30 02:33:47,126 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-08-30 02:33:47,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:33:47,137 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 02:33:47,137 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:33:47,196 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:33:47,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 73 transitions, 151 flow [2023-08-30 02:33:47,240 INFO L130 PetriNetUnfolder]: 10/88 cut-off events. [2023-08-30 02:33:47,240 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:47,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 88 events. 10/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 142 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-30 02:33:47,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 73 transitions, 151 flow [2023-08-30 02:33:47,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 73 transitions, 151 flow [2023-08-30 02:33:47,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:33:47,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 73 transitions, 151 flow [2023-08-30 02:33:47,256 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 73 transitions, 151 flow [2023-08-30 02:33:47,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 73 transitions, 151 flow [2023-08-30 02:33:47,270 INFO L130 PetriNetUnfolder]: 10/88 cut-off events. [2023-08-30 02:33:47,270 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:47,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 88 events. 10/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 142 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-30 02:33:47,272 INFO L119 LiptonReduction]: Number of co-enabled transitions 1548 [2023-08-30 02:33:48,740 INFO L134 LiptonReduction]: Checked pairs total: 1220 [2023-08-30 02:33:48,741 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-08-30 02:33:48,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:33:48,766 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;@5920d1d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:33:48,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 02:33:48,768 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:33:48,768 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:48,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:48,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:48,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:33:48,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash 10322, now seen corresponding path program 1 times [2023-08-30 02:33:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693880784] [2023-08-30 02:33:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:48,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:33:48,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:48,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693880784] [2023-08-30 02:33:48,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693880784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:48,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:48,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695894331] [2023-08-30 02:33:48,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:48,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:33:48,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:48,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:33:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:33:48,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 137 [2023-08-30 02:33:48,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 20 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:48,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:48,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 137 [2023-08-30 02:33:48,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:48,947 INFO L130 PetriNetUnfolder]: 40/81 cut-off events. [2023-08-30 02:33:48,947 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:48,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 81 events. 40/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 233 event pairs, 20 based on Foata normal form. 5/47 useless extension candidates. Maximal degree in co-relation 143. Up to 75 conditions per place. [2023-08-30 02:33:48,949 INFO L137 encePairwiseOnDemand]: 134/137 looper letters, 15 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-30 02:33:48,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 17 transitions, 69 flow [2023-08-30 02:33:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:33:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:33:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 148 transitions. [2023-08-30 02:33:48,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5401459854014599 [2023-08-30 02:33:48,960 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 148 transitions. [2023-08-30 02:33:48,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 148 transitions. [2023-08-30 02:33:48,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:48,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 148 transitions. [2023-08-30 02:33:48,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:48,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:48,974 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:48,975 INFO L175 Difference]: Start difference. First operand has 18 places, 20 transitions, 45 flow. Second operand 2 states and 148 transitions. [2023-08-30 02:33:48,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 17 transitions, 69 flow [2023-08-30 02:33:48,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:33:48,978 INFO L231 Difference]: Finished difference. Result has 17 places, 17 transitions, 39 flow [2023-08-30 02:33:48,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=39, PETRI_PLACES=17, PETRI_TRANSITIONS=17} [2023-08-30 02:33:48,982 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-08-30 02:33:48,982 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 17 transitions, 39 flow [2023-08-30 02:33:48,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:48,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:48,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:48,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 02:33:48,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:33:48,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:48,984 INFO L85 PathProgramCache]: Analyzing trace with hash 10336, now seen corresponding path program 1 times [2023-08-30 02:33:48,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:48,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694412885] [2023-08-30 02:33:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:33:49,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:49,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694412885] [2023-08-30 02:33:49,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694412885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:49,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:49,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518479426] [2023-08-30 02:33:49,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:49,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:49,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:49,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:49,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:49,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 137 [2023-08-30 02:33:49,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 17 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:49,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:49,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 137 [2023-08-30 02:33:49,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:49,097 INFO L130 PetriNetUnfolder]: 31/64 cut-off events. [2023-08-30 02:33:49,098 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:49,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 64 events. 31/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 173 event pairs, 15 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 126. Up to 58 conditions per place. [2023-08-30 02:33:49,098 INFO L137 encePairwiseOnDemand]: 135/137 looper letters, 13 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 02:33:49,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 16 transitions, 65 flow [2023-08-30 02:33:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-08-30 02:33:49,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48175182481751827 [2023-08-30 02:33:49,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-08-30 02:33:49,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-08-30 02:33:49,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:49,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-08-30 02:33:49,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:49,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:49,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:49,104 INFO L175 Difference]: Start difference. First operand has 17 places, 17 transitions, 39 flow. Second operand 3 states and 198 transitions. [2023-08-30 02:33:49,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 16 transitions, 65 flow [2023-08-30 02:33:49,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 65 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:33:49,105 INFO L231 Difference]: Finished difference. Result has 18 places, 16 transitions, 39 flow [2023-08-30 02:33:49,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=18, PETRI_TRANSITIONS=16} [2023-08-30 02:33:49,106 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2023-08-30 02:33:49,106 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 16 transitions, 39 flow [2023-08-30 02:33:49,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:49,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:49,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:49,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 02:33:49,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:33:49,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:49,108 INFO L85 PathProgramCache]: Analyzing trace with hash 10335, now seen corresponding path program 1 times [2023-08-30 02:33:49,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:49,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436184485] [2023-08-30 02:33:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:49,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:33:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436184485] [2023-08-30 02:33:49,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436184485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:49,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:49,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553519076] [2023-08-30 02:33:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:49,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:49,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 137 [2023-08-30 02:33:49,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:49,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:49,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 137 [2023-08-30 02:33:49,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:49,204 INFO L130 PetriNetUnfolder]: 22/47 cut-off events. [2023-08-30 02:33:49,204 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:49,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 47 events. 22/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 112 event pairs, 10 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 94. Up to 42 conditions per place. [2023-08-30 02:33:49,205 INFO L137 encePairwiseOnDemand]: 135/137 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 02:33:49,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 63 flow [2023-08-30 02:33:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-08-30 02:33:49,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46472019464720193 [2023-08-30 02:33:49,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-08-30 02:33:49,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-08-30 02:33:49,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:49,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-08-30 02:33:49,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 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) [2023-08-30 02:33:49,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:49,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:49,212 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 39 flow. Second operand 3 states and 191 transitions. [2023-08-30 02:33:49,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 63 flow [2023-08-30 02:33:49,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:49,213 INFO L231 Difference]: Finished difference. Result has 18 places, 15 transitions, 38 flow [2023-08-30 02:33:49,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=18, PETRI_TRANSITIONS=15} [2023-08-30 02:33:49,214 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2023-08-30 02:33:49,216 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 15 transitions, 38 flow [2023-08-30 02:33:49,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:49,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:49,217 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 02:33:49,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 02:33:49,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:33:49,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:49,218 INFO L85 PathProgramCache]: Analyzing trace with hash 960901054, now seen corresponding path program 1 times [2023-08-30 02:33:49,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989464468] [2023-08-30 02:33:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:49,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:49,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:33:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:49,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:33:49,271 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:33:49,272 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-30 02:33:49,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2023-08-30 02:33:49,275 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-30 02:33:49,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-30 02:33:49,276 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-08-30 02:33:49,277 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-08-30 02:33:49,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 02:33:49,277 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 02:33:49,281 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:33:49,281 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 02:33:49,314 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:33:49,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 117 transitions, 246 flow [2023-08-30 02:33:49,338 INFO L130 PetriNetUnfolder]: 19/149 cut-off events. [2023-08-30 02:33:49,338 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:33:49,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 149 events. 19/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 344 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-30 02:33:49,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 117 transitions, 246 flow [2023-08-30 02:33:49,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 117 transitions, 246 flow [2023-08-30 02:33:49,340 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:33:49,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 117 transitions, 246 flow [2023-08-30 02:33:49,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 117 transitions, 246 flow [2023-08-30 02:33:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 117 transitions, 246 flow [2023-08-30 02:33:49,349 INFO L130 PetriNetUnfolder]: 19/149 cut-off events. [2023-08-30 02:33:49,349 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:33:49,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 149 events. 19/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 344 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-30 02:33:49,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 6880 [2023-08-30 02:33:51,196 INFO L134 LiptonReduction]: Checked pairs total: 5118 [2023-08-30 02:33:51,196 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-30 02:33:51,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:33:51,198 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;@5920d1d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:33:51,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 02:33:51,199 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:33:51,199 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:51,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:51,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:51,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:33:51,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:51,200 INFO L85 PathProgramCache]: Analyzing trace with hash 18698, now seen corresponding path program 1 times [2023-08-30 02:33:51,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:51,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437663426] [2023-08-30 02:33:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:51,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:33:51,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:51,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437663426] [2023-08-30 02:33:51,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437663426] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:51,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:51,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:51,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064738457] [2023-08-30 02:33:51,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:51,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:33:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:33:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:33:51,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 218 [2023-08-30 02:33:51,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 33 transitions, 78 flow. Second operand has 2 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) [2023-08-30 02:33:51,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:51,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 218 [2023-08-30 02:33:51,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:51,296 INFO L130 PetriNetUnfolder]: 433/653 cut-off events. [2023-08-30 02:33:51,297 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 02:33:51,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 653 events. 433/653 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 2789 event pairs, 225 based on Foata normal form. 52/349 useless extension candidates. Maximal degree in co-relation 258. Up to 606 conditions per place. [2023-08-30 02:33:51,301 INFO L137 encePairwiseOnDemand]: 214/218 looper letters, 24 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-30 02:33:51,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 29 transitions, 118 flow [2023-08-30 02:33:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:33:51,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:33:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 234 transitions. [2023-08-30 02:33:51,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536697247706422 [2023-08-30 02:33:51,302 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 234 transitions. [2023-08-30 02:33:51,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 234 transitions. [2023-08-30 02:33:51,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:51,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 234 transitions. [2023-08-30 02:33:51,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,304 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,304 INFO L175 Difference]: Start difference. First operand has 28 places, 33 transitions, 78 flow. Second operand 2 states and 234 transitions. [2023-08-30 02:33:51,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 29 transitions, 118 flow [2023-08-30 02:33:51,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 116 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 02:33:51,305 INFO L231 Difference]: Finished difference. Result has 27 places, 29 transitions, 68 flow [2023-08-30 02:33:51,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2023-08-30 02:33:51,306 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-30 02:33:51,307 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 68 flow [2023-08-30 02:33:51,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2023-08-30 02:33:51,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:51,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:51,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 02:33:51,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:33:51,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash 18720, now seen corresponding path program 1 times [2023-08-30 02:33:51,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:51,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104449478] [2023-08-30 02:33:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:51,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:33:51,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104449478] [2023-08-30 02:33:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104449478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:51,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:51,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:51,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737665391] [2023-08-30 02:33:51,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:51,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:51,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:51,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:51,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:51,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 218 [2023-08-30 02:33:51,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:51,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 218 [2023-08-30 02:33:51,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:51,421 INFO L130 PetriNetUnfolder]: 316/486 cut-off events. [2023-08-30 02:33:51,422 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:33:51,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 486 events. 316/486 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1935 event pairs, 160 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 957. Up to 445 conditions per place. [2023-08-30 02:33:51,423 INFO L137 encePairwiseOnDemand]: 216/218 looper letters, 22 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 02:33:51,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 112 flow [2023-08-30 02:33:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-08-30 02:33:51,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908256880733945 [2023-08-30 02:33:51,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-08-30 02:33:51,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-08-30 02:33:51,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:51,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-08-30 02:33:51,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,429 INFO L175 Difference]: Start difference. First operand has 27 places, 29 transitions, 68 flow. Second operand 3 states and 321 transitions. [2023-08-30 02:33:51,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 112 flow [2023-08-30 02:33:51,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 112 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:33:51,430 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 68 flow [2023-08-30 02:33:51,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-08-30 02:33:51,433 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-08-30 02:33:51,433 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 68 flow [2023-08-30 02:33:51,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:51,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:51,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 02:33:51,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:33:51,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:51,434 INFO L85 PathProgramCache]: Analyzing trace with hash 18719, now seen corresponding path program 1 times [2023-08-30 02:33:51,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:51,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140748293] [2023-08-30 02:33:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:51,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:33:51,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:33:51,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140748293] [2023-08-30 02:33:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140748293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:51,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:51,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10797255] [2023-08-30 02:33:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:33:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:51,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 218 [2023-08-30 02:33:51,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:51,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 218 [2023-08-30 02:33:51,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:51,521 INFO L130 PetriNetUnfolder]: 199/319 cut-off events. [2023-08-30 02:33:51,521 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:33:51,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 319 events. 199/319 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1156 event pairs, 95 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 631. Up to 285 conditions per place. [2023-08-30 02:33:51,523 INFO L137 encePairwiseOnDemand]: 216/218 looper letters, 21 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 02:33:51,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 110 flow [2023-08-30 02:33:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:51,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-30 02:33:51,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801223241590214 [2023-08-30 02:33:51,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-30 02:33:51,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-30 02:33:51,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:51,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-30 02:33:51,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,527 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 68 flow. Second operand 3 states and 314 transitions. [2023-08-30 02:33:51,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 110 flow [2023-08-30 02:33:51,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 109 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:51,528 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 67 flow [2023-08-30 02:33:51,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-30 02:33:51,529 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-08-30 02:33:51,530 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 67 flow [2023-08-30 02:33:51,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:51,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:51,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 02:33:51,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 02:33:51,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:33:51,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:51,532 INFO L85 PathProgramCache]: Analyzing trace with hash 120734941, now seen corresponding path program 1 times [2023-08-30 02:33:51,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:33:51,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157544352] [2023-08-30 02:33:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:51,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:33:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:51,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:33:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:51,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:33:51,585 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:33:51,586 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2023-08-30 02:33:51,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2023-08-30 02:33:51,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-30 02:33:51,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-30 02:33:51,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-08-30 02:33:51,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-30 02:33:51,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2023-08-30 02:33:51,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 02:33:51,586 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 02:33:51,590 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-30 02:33:51,590 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 02:33:51,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:33:51 BasicIcfg [2023-08-30 02:33:51,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 02:33:51,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 02:33:51,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 02:33:51,610 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 02:33:51,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:33:47" (3/4) ... [2023-08-30 02:33:51,612 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 02:33:51,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 02:33:51,612 INFO L158 Benchmark]: Toolchain (without parser) took 5215.21ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 57.8MB in the beginning and 35.2MB in the end (delta: 22.6MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2023-08-30 02:33:51,613 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:33:51,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.36ms. Allocated memory is still 81.8MB. Free memory was 57.6MB in the beginning and 58.8MB in the end (delta: -1.2MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2023-08-30 02:33:51,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.50ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 57.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:33:51,613 INFO L158 Benchmark]: Boogie Preprocessor took 37.87ms. Allocated memory is still 81.8MB. Free memory was 57.0MB in the beginning and 55.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:33:51,613 INFO L158 Benchmark]: RCFGBuilder took 322.08ms. Allocated memory is still 81.8MB. Free memory was 55.6MB in the beginning and 42.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 02:33:51,613 INFO L158 Benchmark]: TraceAbstraction took 4486.79ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 42.0MB in the beginning and 35.2MB in the end (delta: 6.8MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2023-08-30 02:33:51,613 INFO L158 Benchmark]: Witness Printer took 2.05ms. Allocated memory is still 119.5MB. Free memory is still 35.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:33:51,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 62.9MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.36ms. Allocated memory is still 81.8MB. Free memory was 57.6MB in the beginning and 58.8MB in the end (delta: -1.2MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.50ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 57.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.87ms. Allocated memory is still 81.8MB. Free memory was 57.0MB in the beginning and 55.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.08ms. Allocated memory is still 81.8MB. Free memory was 55.6MB in the beginning and 42.6MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4486.79ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 42.0MB in the beginning and 35.2MB in the end (delta: 6.8MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. * Witness Printer took 2.05ms. Allocated memory is still 119.5MB. Free memory is still 35.2MB. 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: 1.5s, 67 PlacesBefore, 18 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1548 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 64 TotalNumberOfCompositions, 1220 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1220, independent: 1220, independent conditional: 0, independent unconditional: 1220, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 746, independent: 746, independent conditional: 0, independent unconditional: 746, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1220, independent: 474, independent conditional: 0, independent unconditional: 474, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 746, unknown conditional: 0, unknown unconditional: 746] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 105 PlacesBefore, 28 PlacesAfterwards, 117 TransitionsBefore, 33 TransitionsAfterwards, 6880 CoEnabledTransitionPairs, 5 FixpointIterations, 10 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 7 ChoiceCompositions, 101 TotalNumberOfCompositions, 5118 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5118, independent: 5118, independent conditional: 0, independent unconditional: 5118, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3311, independent: 3311, independent conditional: 0, independent unconditional: 3311, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5118, independent: 1807, independent conditional: 0, independent unconditional: 1807, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3311, unknown conditional: 0, unknown unconditional: 3311] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 695. Possible FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, pthread_create(&t, 0, thr1, 0)=-1, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i 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 -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 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 -> TOGETHER [2023-08-30 02:33:53,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:33:53,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:33:53,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:33:53,613 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:33:53,614 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:33:53,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-08-30 02:33:54,586 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:33:54,771 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:33:54,772 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2023-08-30 02:33:54,779 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee93fed76/36d31bdc3c2d46f2b13e203868e95129/FLAGd440b683d [2023-08-30 02:33:54,790 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee93fed76/36d31bdc3c2d46f2b13e203868e95129 [2023-08-30 02:33:54,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:33:54,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:33:54,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:33:54,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:33:54,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:33:54,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:33:54" (1/1) ... [2023-08-30 02:33:54,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28148f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:54, skipping insertion in model container [2023-08-30 02:33:54,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:33:54" (1/1) ... [2023-08-30 02:33:54,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:33:54,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:33:55,069 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-08-30 02:33:55,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:33:55,085 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:33:55,117 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2023-08-30 02:33:55,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:33:55,146 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:33:55,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55 WrapperNode [2023-08-30 02:33:55,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:33:55,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:33:55,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:33:55,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:33:55,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,186 INFO L138 Inliner]: procedures = 170, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2023-08-30 02:33:55,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:33:55,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:33:55,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:33:55,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:33:55,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,221 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:33:55,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:33:55,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:33:55,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:33:55,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (1/1) ... [2023-08-30 02:33:55,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:33:55,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:33:55,259 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) [2023-08-30 02:33:55,279 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 [2023-08-30 02:33:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 02:33:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 02:33:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:33:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:33:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:33:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 02:33:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 02:33:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:33:55,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:33:55,293 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 02:33:55,416 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:33:55,426 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:33:55,570 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:33:55,584 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:33:55,585 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 02:33:55,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:33:55 BoogieIcfgContainer [2023-08-30 02:33:55,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:33:55,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:33:55,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:33:55,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:33:55,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:33:54" (1/3) ... [2023-08-30 02:33:55,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2753f6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:33:55, skipping insertion in model container [2023-08-30 02:33:55,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:33:55" (2/3) ... [2023-08-30 02:33:55,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2753f6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:33:55, skipping insertion in model container [2023-08-30 02:33:55,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:33:55" (3/3) ... [2023-08-30 02:33:55,595 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2023-08-30 02:33:55,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:33:55,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 02:33:55,610 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:33:55,692 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:33:55,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 74 transitions, 153 flow [2023-08-30 02:33:55,759 INFO L130 PetriNetUnfolder]: 10/89 cut-off events. [2023-08-30 02:33:55,760 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:55,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 10/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-30 02:33:55,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 74 transitions, 153 flow [2023-08-30 02:33:55,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 74 transitions, 153 flow [2023-08-30 02:33:55,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:33:55,790 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 74 transitions, 153 flow [2023-08-30 02:33:55,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 74 transitions, 153 flow [2023-08-30 02:33:55,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 74 transitions, 153 flow [2023-08-30 02:33:55,824 INFO L130 PetriNetUnfolder]: 10/89 cut-off events. [2023-08-30 02:33:55,825 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:55,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 89 events. 10/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-30 02:33:55,828 INFO L119 LiptonReduction]: Number of co-enabled transitions 1548 [2023-08-30 02:33:57,876 INFO L134 LiptonReduction]: Checked pairs total: 1226 [2023-08-30 02:33:57,877 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-30 02:33:57,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:33:57,890 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;@26037764, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:33:57,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 02:33:57,891 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:33:57,891 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:57,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:57,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:57,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:33:57,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash 10482, now seen corresponding path program 1 times [2023-08-30 02:33:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:33:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097032841] [2023-08-30 02:33:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:57,903 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 [2023-08-30 02:33:57,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:33:57,906 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) [2023-08-30 02:33:57,913 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 [2023-08-30 02:33:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:57,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 02:33:57,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:33:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:33:57,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:33:57,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:33:57,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097032841] [2023-08-30 02:33:57,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097032841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:57,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:57,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:57,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938263509] [2023-08-30 02:33:57,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:57,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:33:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:33:58,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:33:58,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:33:58,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 139 [2023-08-30 02:33:58,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 20 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:58,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 139 [2023-08-30 02:33:58,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:58,092 INFO L130 PetriNetUnfolder]: 40/81 cut-off events. [2023-08-30 02:33:58,092 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:58,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 81 events. 40/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 230 event pairs, 20 based on Foata normal form. 5/47 useless extension candidates. Maximal degree in co-relation 143. Up to 75 conditions per place. [2023-08-30 02:33:58,094 INFO L137 encePairwiseOnDemand]: 136/139 looper letters, 15 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-30 02:33:58,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 17 transitions, 69 flow [2023-08-30 02:33:58,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:33:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:33:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 150 transitions. [2023-08-30 02:33:58,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539568345323741 [2023-08-30 02:33:58,123 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 150 transitions. [2023-08-30 02:33:58,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 150 transitions. [2023-08-30 02:33:58,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:58,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 150 transitions. [2023-08-30 02:33:58,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,148 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,149 INFO L175 Difference]: Start difference. First operand has 18 places, 20 transitions, 45 flow. Second operand 2 states and 150 transitions. [2023-08-30 02:33:58,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 17 transitions, 69 flow [2023-08-30 02:33:58,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:33:58,158 INFO L231 Difference]: Finished difference. Result has 17 places, 17 transitions, 39 flow [2023-08-30 02:33:58,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=39, PETRI_PLACES=17, PETRI_TRANSITIONS=17} [2023-08-30 02:33:58,162 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-08-30 02:33:58,162 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 17 transitions, 39 flow [2023-08-30 02:33:58,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:58,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:58,176 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 [2023-08-30 02:33:58,373 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 [2023-08-30 02:33:58,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:33:58,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash 10491, now seen corresponding path program 1 times [2023-08-30 02:33:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:33:58,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866333603] [2023-08-30 02:33:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:58,375 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 [2023-08-30 02:33:58,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:33:58,376 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) [2023-08-30 02:33:58,378 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 [2023-08-30 02:33:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:58,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 02:33:58,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:33:58,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 02:33:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:33:58,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:33:58,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:33:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866333603] [2023-08-30 02:33:58,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866333603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:58,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:58,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:58,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787201949] [2023-08-30 02:33:58,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:58,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:58,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:33:58,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:58,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 139 [2023-08-30 02:33:58,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 17 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:58,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 139 [2023-08-30 02:33:58,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:58,507 INFO L130 PetriNetUnfolder]: 31/64 cut-off events. [2023-08-30 02:33:58,508 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:58,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 64 events. 31/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 167 event pairs, 15 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 126. Up to 58 conditions per place. [2023-08-30 02:33:58,508 INFO L137 encePairwiseOnDemand]: 137/139 looper letters, 13 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 02:33:58,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 16 transitions, 65 flow [2023-08-30 02:33:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-08-30 02:33:58,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48201438848920863 [2023-08-30 02:33:58,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-08-30 02:33:58,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-08-30 02:33:58,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:58,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-08-30 02:33:58,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,514 INFO L175 Difference]: Start difference. First operand has 17 places, 17 transitions, 39 flow. Second operand 3 states and 201 transitions. [2023-08-30 02:33:58,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 16 transitions, 65 flow [2023-08-30 02:33:58,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 65 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:33:58,515 INFO L231 Difference]: Finished difference. Result has 18 places, 16 transitions, 39 flow [2023-08-30 02:33:58,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=18, PETRI_TRANSITIONS=16} [2023-08-30 02:33:58,515 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2023-08-30 02:33:58,515 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 16 transitions, 39 flow [2023-08-30 02:33:58,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:58,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:33:58,538 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 [2023-08-30 02:33:58,725 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 [2023-08-30 02:33:58,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:33:58,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:58,729 INFO L85 PathProgramCache]: Analyzing trace with hash 10490, now seen corresponding path program 1 times [2023-08-30 02:33:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:33:58,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71942216] [2023-08-30 02:33:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:58,730 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 [2023-08-30 02:33:58,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:33:58,745 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) [2023-08-30 02:33:58,747 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 [2023-08-30 02:33:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:33:58,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 02:33:58,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:33:58,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 02:33:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:33:58,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:33:58,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:33:58,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71942216] [2023-08-30 02:33:58,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71942216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:33:58,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:33:58,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:33:58,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574994720] [2023-08-30 02:33:58,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:33:58,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:33:58,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:33:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:33:58,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:33:58,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 139 [2023-08-30 02:33:58,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:33:58,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 139 [2023-08-30 02:33:58,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:33:58,862 INFO L130 PetriNetUnfolder]: 22/47 cut-off events. [2023-08-30 02:33:58,862 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:33:58,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 47 events. 22/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 109 event pairs, 10 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 94. Up to 42 conditions per place. [2023-08-30 02:33:58,863 INFO L137 encePairwiseOnDemand]: 137/139 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 02:33:58,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 63 flow [2023-08-30 02:33:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:33:58,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:33:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-08-30 02:33:58,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46522781774580335 [2023-08-30 02:33:58,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-08-30 02:33:58,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-08-30 02:33:58,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:33:58,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-08-30 02:33:58,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,868 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 39 flow. Second operand 3 states and 194 transitions. [2023-08-30 02:33:58,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 63 flow [2023-08-30 02:33:58,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:33:58,868 INFO L231 Difference]: Finished difference. Result has 18 places, 15 transitions, 38 flow [2023-08-30 02:33:58,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=18, PETRI_TRANSITIONS=15} [2023-08-30 02:33:58,869 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2023-08-30 02:33:58,869 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 15 transitions, 38 flow [2023-08-30 02:33:58,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:33:58,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:33:58,870 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 02:33:58,881 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 [2023-08-30 02:33:59,079 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 [2023-08-30 02:33:59,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:33:59,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:33:59,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1104109276, now seen corresponding path program 1 times [2023-08-30 02:33:59,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:33:59,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902890642] [2023-08-30 02:33:59,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:33:59,080 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 [2023-08-30 02:33:59,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:33:59,081 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) [2023-08-30 02:33:59,083 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 [2023-08-30 02:33:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:59,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:33:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:33:59,139 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-30 02:33:59,139 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:33:59,140 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-30 02:33:59,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2023-08-30 02:33:59,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-30 02:33:59,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-30 02:33:59,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-08-30 02:33:59,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-08-30 02:33:59,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 02:33:59,348 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 [2023-08-30 02:33:59,349 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 02:33:59,350 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:33:59,350 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 02:33:59,365 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:33:59,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 118 transitions, 248 flow [2023-08-30 02:33:59,389 INFO L130 PetriNetUnfolder]: 19/150 cut-off events. [2023-08-30 02:33:59,392 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:33:59,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 150 events. 19/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 341 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-30 02:33:59,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 118 transitions, 248 flow [2023-08-30 02:33:59,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 118 transitions, 248 flow [2023-08-30 02:33:59,395 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:33:59,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 118 transitions, 248 flow [2023-08-30 02:33:59,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 118 transitions, 248 flow [2023-08-30 02:33:59,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 118 transitions, 248 flow [2023-08-30 02:33:59,410 INFO L130 PetriNetUnfolder]: 19/150 cut-off events. [2023-08-30 02:33:59,410 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:33:59,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 150 events. 19/150 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 341 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2023-08-30 02:33:59,414 INFO L119 LiptonReduction]: Number of co-enabled transitions 6880 [2023-08-30 02:34:02,073 INFO L134 LiptonReduction]: Checked pairs total: 5118 [2023-08-30 02:34:02,073 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-30 02:34:02,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:34:02,075 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;@26037764, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:34:02,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 02:34:02,076 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:34:02,076 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:34:02,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:34:02,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:34:02,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:34:02,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:34:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 18891, now seen corresponding path program 1 times [2023-08-30 02:34:02,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:34:02,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564668733] [2023-08-30 02:34:02,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:34:02,077 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 [2023-08-30 02:34:02,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:34:02,078 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) [2023-08-30 02:34:02,080 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 [2023-08-30 02:34:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:34:02,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 02:34:02,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:34:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:34:02,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:34:02,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:34:02,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564668733] [2023-08-30 02:34:02,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564668733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:34:02,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:34:02,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:34:02,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587485843] [2023-08-30 02:34:02,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:34:02,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:34:02,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:34:02,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:34:02,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:34:02,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 220 [2023-08-30 02:34:02,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 33 transitions, 78 flow. Second operand has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:34:02,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 220 [2023-08-30 02:34:02,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:34:02,207 INFO L130 PetriNetUnfolder]: 433/653 cut-off events. [2023-08-30 02:34:02,207 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 02:34:02,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 653 events. 433/653 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2822 event pairs, 225 based on Foata normal form. 52/349 useless extension candidates. Maximal degree in co-relation 258. Up to 606 conditions per place. [2023-08-30 02:34:02,211 INFO L137 encePairwiseOnDemand]: 216/220 looper letters, 24 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-30 02:34:02,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 29 transitions, 118 flow [2023-08-30 02:34:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:34:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:34:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 236 transitions. [2023-08-30 02:34:02,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363636363636364 [2023-08-30 02:34:02,213 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 236 transitions. [2023-08-30 02:34:02,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 236 transitions. [2023-08-30 02:34:02,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:34:02,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 236 transitions. [2023-08-30 02:34:02,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,215 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) [2023-08-30 02:34:02,215 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) [2023-08-30 02:34:02,215 INFO L175 Difference]: Start difference. First operand has 28 places, 33 transitions, 78 flow. Second operand 2 states and 236 transitions. [2023-08-30 02:34:02,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 29 transitions, 118 flow [2023-08-30 02:34:02,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 116 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 02:34:02,216 INFO L231 Difference]: Finished difference. Result has 27 places, 29 transitions, 68 flow [2023-08-30 02:34:02,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2023-08-30 02:34:02,217 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-30 02:34:02,217 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 68 flow [2023-08-30 02:34:02,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:34:02,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:34:02,235 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 [2023-08-30 02:34:02,425 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 [2023-08-30 02:34:02,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:34:02,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:34:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash 18905, now seen corresponding path program 1 times [2023-08-30 02:34:02,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:34:02,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416813952] [2023-08-30 02:34:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:34:02,426 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 [2023-08-30 02:34:02,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:34:02,427 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) [2023-08-30 02:34:02,432 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 [2023-08-30 02:34:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:34:02,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 02:34:02,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:34:02,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 02:34:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:34:02,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:34:02,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:34:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416813952] [2023-08-30 02:34:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416813952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:34:02,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:34:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:34:02,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477531391] [2023-08-30 02:34:02,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:34:02,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:34:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:34:02,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:34:02,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:34:02,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 220 [2023-08-30 02:34:02,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:34:02,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 220 [2023-08-30 02:34:02,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:34:02,581 INFO L130 PetriNetUnfolder]: 316/486 cut-off events. [2023-08-30 02:34:02,582 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:34:02,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 486 events. 316/486 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1941 event pairs, 160 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 957. Up to 445 conditions per place. [2023-08-30 02:34:02,585 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 22 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 02:34:02,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 112 flow [2023-08-30 02:34:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:34:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:34:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-30 02:34:02,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2023-08-30 02:34:02,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-30 02:34:02,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-30 02:34:02,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:34:02,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-30 02:34:02,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,591 INFO L175 Difference]: Start difference. First operand has 27 places, 29 transitions, 68 flow. Second operand 3 states and 318 transitions. [2023-08-30 02:34:02,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 112 flow [2023-08-30 02:34:02,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 112 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:34:02,592 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 68 flow [2023-08-30 02:34:02,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-08-30 02:34:02,593 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-08-30 02:34:02,593 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 68 flow [2023-08-30 02:34:02,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:34:02,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:34:02,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-08-30 02:34:02,799 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 [2023-08-30 02:34:02,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:34:02,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:34:02,800 INFO L85 PathProgramCache]: Analyzing trace with hash 18906, now seen corresponding path program 1 times [2023-08-30 02:34:02,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:34:02,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193580013] [2023-08-30 02:34:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:34:02,801 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 [2023-08-30 02:34:02,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:34:02,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:34:02,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 02:34:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:34:02,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 02:34:02,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:34:02,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 02:34:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:34:02,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:34:02,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:34:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193580013] [2023-08-30 02:34:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193580013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:34:02,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:34:02,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:34:02,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888313858] [2023-08-30 02:34:02,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:34:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:34:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:34:02,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:34:02,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:34:02,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 220 [2023-08-30 02:34:02,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:34:02,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 220 [2023-08-30 02:34:02,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:34:02,937 INFO L130 PetriNetUnfolder]: 199/319 cut-off events. [2023-08-30 02:34:02,938 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:34:02,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 319 events. 199/319 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1141 event pairs, 95 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 631. Up to 285 conditions per place. [2023-08-30 02:34:02,939 INFO L137 encePairwiseOnDemand]: 218/220 looper letters, 21 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 02:34:02,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 110 flow [2023-08-30 02:34:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:34:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:34:02,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-08-30 02:34:02,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893939393939394 [2023-08-30 02:34:02,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-08-30 02:34:02,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-08-30 02:34:02,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:34:02,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-08-30 02:34:02,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,954 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) [2023-08-30 02:34:02,954 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) [2023-08-30 02:34:02,954 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 68 flow. Second operand 3 states and 323 transitions. [2023-08-30 02:34:02,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 110 flow [2023-08-30 02:34:02,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 109 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:34:02,956 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 67 flow [2023-08-30 02:34:02,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-30 02:34:02,957 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-08-30 02:34:02,957 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 67 flow [2023-08-30 02:34:02,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:34:02,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:34:02,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 02:34:02,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 02:34:03,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:34:03,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:34:03,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:34:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash 292633913, now seen corresponding path program 1 times [2023-08-30 02:34:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:34:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653173046] [2023-08-30 02:34:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:34:03,166 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 [2023-08-30 02:34:03,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:34:03,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:34:03,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 02:34:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:34:03,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:34:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:34:03,222 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-30 02:34:03,222 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:34:03,222 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2023-08-30 02:34:03,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2023-08-30 02:34:03,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-30 02:34:03,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-30 02:34:03,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-08-30 02:34:03,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-30 02:34:03,225 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2023-08-30 02:34:03,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 02:34:03,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:34:03,426 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-30 02:34:03,429 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-30 02:34:03,429 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 02:34:03,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:34:03 BasicIcfg [2023-08-30 02:34:03,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 02:34:03,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 02:34:03,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 02:34:03,442 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 02:34:03,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:33:55" (3/4) ... [2023-08-30 02:34:03,443 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 02:34:03,444 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 02:34:03,444 INFO L158 Benchmark]: Toolchain (without parser) took 8651.32ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 75.6MB in the beginning and 80.3MB in the end (delta: -4.7MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-08-30 02:34:03,444 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:34:03,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.36ms. Allocated memory is still 96.5MB. Free memory was 75.2MB in the beginning and 55.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 02:34:03,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.51ms. Allocated memory is still 96.5MB. Free memory was 55.3MB in the beginning and 53.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:34:03,445 INFO L158 Benchmark]: Boogie Preprocessor took 38.99ms. Allocated memory is still 96.5MB. Free memory was 53.5MB in the beginning and 51.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:34:03,445 INFO L158 Benchmark]: RCFGBuilder took 361.22ms. Allocated memory is still 96.5MB. Free memory was 51.8MB in the beginning and 67.3MB in the end (delta: -15.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 02:34:03,445 INFO L158 Benchmark]: TraceAbstraction took 7851.62ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 66.8MB in the beginning and 81.4MB in the end (delta: -14.6MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2023-08-30 02:34:03,445 INFO L158 Benchmark]: Witness Printer took 2.16ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:34:03,446 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 62.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.36ms. Allocated memory is still 96.5MB. Free memory was 75.2MB in the beginning and 55.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.51ms. Allocated memory is still 96.5MB. Free memory was 55.3MB in the beginning and 53.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.99ms. Allocated memory is still 96.5MB. Free memory was 53.5MB in the beginning and 51.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.22ms. Allocated memory is still 96.5MB. Free memory was 51.8MB in the beginning and 67.3MB in the end (delta: -15.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7851.62ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 66.8MB in the beginning and 81.4MB in the end (delta: -14.6MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Witness Printer took 2.16ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.3MB in the end (delta: 1.1MB). 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: 2.1s, 68 PlacesBefore, 18 PlacesAfterwards, 74 TransitionsBefore, 20 TransitionsAfterwards, 1548 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 65 TotalNumberOfCompositions, 1226 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1226, independent: 1226, independent conditional: 0, independent unconditional: 1226, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 739, independent: 739, independent conditional: 0, independent unconditional: 739, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1226, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 739, unknown conditional: 0, unknown unconditional: 739] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 106 PlacesBefore, 28 PlacesAfterwards, 118 TransitionsBefore, 33 TransitionsAfterwards, 6880 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 7 ChoiceCompositions, 102 TotalNumberOfCompositions, 5118 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5118, independent: 5118, independent conditional: 0, independent unconditional: 5118, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3302, independent: 3302, independent conditional: 0, independent unconditional: 3302, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5118, independent: 1816, independent conditional: 0, independent unconditional: 1816, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3302, unknown conditional: 0, unknown unconditional: 3302] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 695. Possible FailurePath: [L700] 0 pthread_t t; VAL [t={3:0}] [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [arg={0:0}, pthread_create(&t, 0, thr1, 0)=0, t={3:0}] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [arg={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i