./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_12-fldsense_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_12-fldsense_nr.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 f07f53b70b113c395773370086657e2cda4799340cf7206361c323fc526218bf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:16:26,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:16:26,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:16:27,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:16:27,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:16:27,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:16:27,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:16:27,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:16:27,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:16:27,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:16:27,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:16:27,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:16:27,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:16:27,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:16:27,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:16:27,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:16:27,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:16:27,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:16:27,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:16:27,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:16:27,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:16:27,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:16:27,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:16:27,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:16:27,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:16:27,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:16:27,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:16:27,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:16:27,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:16:27,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:16:27,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:16:27,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:16:27,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:16:27,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:16:27,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:16:27,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:16:27,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:16:27,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:16:27,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:16:27,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:16:27,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:16:27,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:16:27,129 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:16:27,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:16:27,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:16:27,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:16:27,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:16:27,132 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:16:27,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:16:27,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:16:27,133 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:16:27,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:16:27,134 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:16:27,134 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:16:27,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:16:27,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:16:27,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:16:27,135 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:16:27,135 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:16:27,135 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:16:27,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:16:27,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:16:27,135 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:16:27,136 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:16:27,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:16:27,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:16:27,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:16:27,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:16:27,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:16:27,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:16:27,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:16:27,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:16:27,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:16:27,138 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:16:27,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:16:27,138 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:16:27,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f07f53b70b113c395773370086657e2cda4799340cf7206361c323fc526218bf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:16:27,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:16:27,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:16:27,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:16:27,445 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:16:27,445 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:16:27,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_12-fldsense_nr.i [2023-08-29 21:16:28,508 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:16:28,776 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:16:28,780 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_12-fldsense_nr.i [2023-08-29 21:16:28,791 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28bf43757/ca03629d253b42c294820833aa0d3795/FLAGb51838975 [2023-08-29 21:16:28,803 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28bf43757/ca03629d253b42c294820833aa0d3795 [2023-08-29 21:16:28,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:16:28,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:16:28,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:16:28,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:16:28,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:16:28,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:16:28" (1/1) ... [2023-08-29 21:16:28,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bbe780e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:28, skipping insertion in model container [2023-08-29 21:16:28,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:16:28" (1/1) ... [2023-08-29 21:16:28,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:16:28,861 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:16:29,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:16:29,124 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:16:29,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:16:29,210 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:16:29,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29 WrapperNode [2023-08-29 21:16:29,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:16:29,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:16:29,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:16:29,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:16:29,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,247 INFO L138 Inliner]: procedures = 162, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2023-08-29 21:16:29,247 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:16:29,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:16:29,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:16:29,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:16:29,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:16:29,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:16:29,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:16:29,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:16:29,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (1/1) ... [2023-08-29 21:16:29,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:16:29,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:16:29,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 21:16:29,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 21:16:29,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:16:29,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:16:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:16:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:16:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:16:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:16:29,340 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:16:29,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:16:29,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:16:29,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:16:29,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:16:29,342 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:16:29,436 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:16:29,438 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:16:29,694 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:16:29,700 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:16:29,701 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:16:29,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:16:29 BoogieIcfgContainer [2023-08-29 21:16:29,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:16:29,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:16:29,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:16:29,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:16:29,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:16:28" (1/3) ... [2023-08-29 21:16:29,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf8dc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:16:29, skipping insertion in model container [2023-08-29 21:16:29,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:29" (2/3) ... [2023-08-29 21:16:29,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf8dc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:16:29, skipping insertion in model container [2023-08-29 21:16:29,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:16:29" (3/3) ... [2023-08-29 21:16:29,738 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_12-fldsense_nr.i [2023-08-29 21:16:29,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:16:29,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-29 21:16:29,759 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:16:29,850 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:16:29,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 81 transitions, 167 flow [2023-08-29 21:16:29,930 INFO L130 PetriNetUnfolder]: 0/80 cut-off events. [2023-08-29 21:16:29,934 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:16:29,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 80 events. 0/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:16:29,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 81 transitions, 167 flow [2023-08-29 21:16:29,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 80 transitions, 163 flow [2023-08-29 21:16:29,945 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:16:29,961 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 80 transitions, 163 flow [2023-08-29 21:16:29,965 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 80 transitions, 163 flow [2023-08-29 21:16:29,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 80 transitions, 163 flow [2023-08-29 21:16:29,999 INFO L130 PetriNetUnfolder]: 0/80 cut-off events. [2023-08-29 21:16:30,001 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:16:30,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 80 events. 0/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:16:30,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 1020 [2023-08-29 21:16:32,632 INFO L134 LiptonReduction]: Checked pairs total: 2970 [2023-08-29 21:16:32,633 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-29 21:16:32,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:16:32,649 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20c3af9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:16:32,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-29 21:16:32,650 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:16:32,650 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:16:32,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:16:32,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:16:32,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-08-29 21:16:32,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:16:32,655 INFO L85 PathProgramCache]: Analyzing trace with hash 296, now seen corresponding path program 1 times [2023-08-29 21:16:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:16:32,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545401480] [2023-08-29 21:16:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:16:32,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:16:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:16:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:16:32,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:16:32,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545401480] [2023-08-29 21:16:32,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545401480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:16:32,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:16:32,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:16:32,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141494360] [2023-08-29 21:16:32,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:16:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:16:32,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:16:32,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:16:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:16:32,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 169 [2023-08-29 21:16:32,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 63 flow. Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:32,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:16:32,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 169 [2023-08-29 21:16:32,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:16:32,865 INFO L130 PetriNetUnfolder]: 84/200 cut-off events. [2023-08-29 21:16:32,866 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:16:32,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 200 events. 84/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 748 event pairs, 84 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 385. Up to 190 conditions per place. [2023-08-29 21:16:32,869 INFO L137 encePairwiseOnDemand]: 162/169 looper letters, 21 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-29 21:16:32,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 91 flow [2023-08-29 21:16:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:16:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:16:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 188 transitions. [2023-08-29 21:16:32,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562130177514792 [2023-08-29 21:16:32,881 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 188 transitions. [2023-08-29 21:16:32,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 188 transitions. [2023-08-29 21:16:32,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:16:32,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 188 transitions. [2023-08-29 21:16:32,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 94.0) internal successors, (188), 2 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) [2023-08-29 21:16:32,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:32,892 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:32,894 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 63 flow. Second operand 2 states and 188 transitions. [2023-08-29 21:16:32,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 91 flow [2023-08-29 21:16:32,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:16:32,897 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 48 flow [2023-08-29 21:16:32,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-29 21:16:32,901 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -7 predicate places. [2023-08-29 21:16:32,902 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 48 flow [2023-08-29 21:16:32,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:32,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:16:32,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:16:32,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:16:32,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-08-29 21:16:32,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:16:32,904 INFO L85 PathProgramCache]: Analyzing trace with hash 289248, now seen corresponding path program 1 times [2023-08-29 21:16:32,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:16:32,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567124217] [2023-08-29 21:16:32,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:16:32,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:16:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:16:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:16:33,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:16:33,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567124217] [2023-08-29 21:16:33,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567124217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:16:33,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:16:33,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:16:33,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024430419] [2023-08-29 21:16:33,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:16:33,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:16:33,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:16:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:16:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:16:33,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 169 [2023-08-29 21:16:33,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:16:33,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 169 [2023-08-29 21:16:33,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:16:33,307 INFO L130 PetriNetUnfolder]: 60/147 cut-off events. [2023-08-29 21:16:33,308 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:16:33,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 147 events. 60/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 483 event pairs, 60 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 287. Up to 138 conditions per place. [2023-08-29 21:16:33,309 INFO L137 encePairwiseOnDemand]: 165/169 looper letters, 17 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-29 21:16:33,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 20 transitions, 78 flow [2023-08-29 21:16:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:16:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:16:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-29 21:16:33,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46745562130177515 [2023-08-29 21:16:33,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-29 21:16:33,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-29 21:16:33,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:16:33,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-29 21:16:33,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,319 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 48 flow. Second operand 3 states and 237 transitions. [2023-08-29 21:16:33,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 20 transitions, 78 flow [2023-08-29 21:16:33,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 78 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:16:33,320 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 44 flow [2023-08-29 21:16:33,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-08-29 21:16:33,321 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-08-29 21:16:33,321 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 44 flow [2023-08-29 21:16:33,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:16:33,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:16:33,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:16:33,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-08-29 21:16:33,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:16:33,323 INFO L85 PathProgramCache]: Analyzing trace with hash 289261, now seen corresponding path program 1 times [2023-08-29 21:16:33,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:16:33,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914985510] [2023-08-29 21:16:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:16:33,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:16:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:16:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:16:33,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:16:33,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914985510] [2023-08-29 21:16:33,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914985510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:16:33,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:16:33,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:16:33,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347029403] [2023-08-29 21:16:33,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:16:33,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:16:33,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:16:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:16:33,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:16:33,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 169 [2023-08-29 21:16:33,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 44 flow. Second operand has 3 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) [2023-08-29 21:16:33,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:16:33,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 169 [2023-08-29 21:16:33,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:16:33,458 INFO L130 PetriNetUnfolder]: 34/100 cut-off events. [2023-08-29 21:16:33,458 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:16:33,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 100 events. 34/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 279 event pairs, 28 based on Foata normal form. 5/96 useless extension candidates. Maximal degree in co-relation 198. Up to 77 conditions per place. [2023-08-29 21:16:33,459 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 16 selfloop transitions, 5 changer transitions 0/22 dead transitions. [2023-08-29 21:16:33,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 90 flow [2023-08-29 21:16:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:16:33,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:16:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-08-29 21:16:33,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43984220907297833 [2023-08-29 21:16:33,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-08-29 21:16:33,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-08-29 21:16:33,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:16:33,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-08-29 21:16:33,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,467 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 44 flow. Second operand 3 states and 223 transitions. [2023-08-29 21:16:33,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 90 flow [2023-08-29 21:16:33,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:16:33,469 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 71 flow [2023-08-29 21:16:33,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-29 21:16:33,470 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -7 predicate places. [2023-08-29 21:16:33,470 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 71 flow [2023-08-29 21:16:33,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-29 21:16:33,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:16:33,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:16:33,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:16:33,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-08-29 21:16:33,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:16:33,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1258347270, now seen corresponding path program 1 times [2023-08-29 21:16:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:16:33,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814265190] [2023-08-29 21:16:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:16:33,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:16:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:16:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:16:33,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:16:33,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814265190] [2023-08-29 21:16:33,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814265190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:16:33,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:16:33,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:16:33,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558611848] [2023-08-29 21:16:33,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:16:33,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:16:33,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:16:33,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:16:33,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:16:33,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 169 [2023-08-29 21:16:33,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:16:33,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 169 [2023-08-29 21:16:33,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:16:33,658 INFO L130 PetriNetUnfolder]: 27/80 cut-off events. [2023-08-29 21:16:33,658 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-29 21:16:33,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 80 events. 27/80 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 198 event pairs, 24 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 189. Up to 60 conditions per place. [2023-08-29 21:16:33,659 INFO L137 encePairwiseOnDemand]: 166/169 looper letters, 12 selfloop transitions, 2 changer transitions 6/22 dead transitions. [2023-08-29 21:16:33,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 113 flow [2023-08-29 21:16:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:16:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:16:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-29 21:16:33,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891518737672584 [2023-08-29 21:16:33,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-29 21:16:33,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-29 21:16:33,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:16:33,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-29 21:16:33,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,664 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 71 flow. Second operand 3 states and 248 transitions. [2023-08-29 21:16:33,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 113 flow [2023-08-29 21:16:33,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:16:33,665 INFO L231 Difference]: Finished difference. Result has 26 places, 15 transitions, 47 flow [2023-08-29 21:16:33,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=26, PETRI_TRANSITIONS=15} [2023-08-29 21:16:33,666 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-08-29 21:16:33,666 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 15 transitions, 47 flow [2023-08-29 21:16:33,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:16:33,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:16:33,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:16:33,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-08-29 21:16:33,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:16:33,668 INFO L85 PathProgramCache]: Analyzing trace with hash 278946700, now seen corresponding path program 1 times [2023-08-29 21:16:33,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:16:33,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053924250] [2023-08-29 21:16:33,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:16:33,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:16:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:16:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:16:33,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:16:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053924250] [2023-08-29 21:16:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053924250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:16:33,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:16:33,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:16:33,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599334219] [2023-08-29 21:16:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:16:33,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:16:33,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:16:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:16:33,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:16:33,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 169 [2023-08-29 21:16:33,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 15 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:16:33,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 169 [2023-08-29 21:16:33,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:16:33,775 INFO L130 PetriNetUnfolder]: 7/32 cut-off events. [2023-08-29 21:16:33,775 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 21:16:33,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 32 events. 7/32 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 3 based on Foata normal form. 4/36 useless extension candidates. Maximal degree in co-relation 80. Up to 23 conditions per place. [2023-08-29 21:16:33,776 INFO L137 encePairwiseOnDemand]: 166/169 looper letters, 14 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2023-08-29 21:16:33,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 19 transitions, 93 flow [2023-08-29 21:16:33,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:16:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:16:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-08-29 21:16:33,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47534516765285995 [2023-08-29 21:16:33,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-08-29 21:16:33,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-08-29 21:16:33,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:16:33,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-08-29 21:16:33,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,780 INFO L175 Difference]: Start difference. First operand has 26 places, 15 transitions, 47 flow. Second operand 3 states and 241 transitions. [2023-08-29 21:16:33,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 19 transitions, 93 flow [2023-08-29 21:16:33,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 19 transitions, 87 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:16:33,781 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 49 flow [2023-08-29 21:16:33,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2023-08-29 21:16:33,782 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -10 predicate places. [2023-08-29 21:16:33,782 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 49 flow [2023-08-29 21:16:33,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:16:33,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:16:33,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:16:33,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-08-29 21:16:33,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:16:33,783 INFO L85 PathProgramCache]: Analyzing trace with hash 602988758, now seen corresponding path program 2 times [2023-08-29 21:16:33,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:16:33,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173807980] [2023-08-29 21:16:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:16:33,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:16:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:16:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:16:33,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:16:33,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173807980] [2023-08-29 21:16:33,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173807980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:16:33,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:16:33,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:16:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516238587] [2023-08-29 21:16:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:16:33,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:16:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:16:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:16:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:16:33,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 169 [2023-08-29 21:16:33,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:16:33,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 169 [2023-08-29 21:16:33,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:16:33,923 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2023-08-29 21:16:33,923 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 21:16:33,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 30 events. 7/30 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 7 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 79. Up to 29 conditions per place. [2023-08-29 21:16:33,924 INFO L137 encePairwiseOnDemand]: 166/169 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-29 21:16:33,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 13 transitions, 65 flow [2023-08-29 21:16:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:16:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:16:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2023-08-29 21:16:33,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40039447731755423 [2023-08-29 21:16:33,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2023-08-29 21:16:33,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2023-08-29 21:16:33,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:16:33,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2023-08-29 21:16:33,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,928 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 49 flow. Second operand 3 states and 203 transitions. [2023-08-29 21:16:33,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 13 transitions, 65 flow [2023-08-29 21:16:33,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 13 transitions, 60 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:16:33,929 INFO L231 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2023-08-29 21:16:33,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2023-08-29 21:16:33,929 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -12 predicate places. [2023-08-29 21:16:33,930 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2023-08-29 21:16:33,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:16:33,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 20 remaining) [2023-08-29 21:16:33,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-08-29 21:16:33,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-08-29 21:16:33,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-08-29 21:16:33,933 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-08-29 21:16:33,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-08-29 21:16:33,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-08-29 21:16:33,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-08-29 21:16:33,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-08-29 21:16:33,934 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-08-29 21:16:33,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (9 of 20 remaining) [2023-08-29 21:16:33,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-08-29 21:16:33,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-08-29 21:16:33,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-08-29 21:16:33,935 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-08-29 21:16:33,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-08-29 21:16:33,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2023-08-29 21:16:33,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 20 remaining) [2023-08-29 21:16:33,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 20 remaining) [2023-08-29 21:16:33,936 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 20 remaining) [2023-08-29 21:16:33,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 21:16:33,937 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-29 21:16:33,941 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:16:33,941 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:16:33,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:16:33 BasicIcfg [2023-08-29 21:16:33,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:16:33,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:16:33,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:16:33,945 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:16:33,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:16:29" (3/4) ... [2023-08-29 21:16:33,947 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:16:33,951 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:16:33,955 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-29 21:16:33,955 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:16:33,955 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:16:33,980 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:16:33,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:16:33,981 INFO L158 Benchmark]: Toolchain (without parser) took 5175.72ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 50.8MB in the beginning and 56.5MB in the end (delta: -5.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-08-29 21:16:33,981 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 73.4MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:16:33,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.44ms. Allocated memory is still 73.4MB. Free memory was 50.5MB in the beginning and 31.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-29 21:16:33,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.35ms. Allocated memory is still 73.4MB. Free memory was 31.9MB in the beginning and 29.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:16:33,982 INFO L158 Benchmark]: Boogie Preprocessor took 30.45ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 29.9MB in the beginning and 76.7MB in the end (delta: -46.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-08-29 21:16:33,982 INFO L158 Benchmark]: RCFGBuilder took 431.64ms. Allocated memory is still 96.5MB. Free memory was 76.7MB in the beginning and 61.4MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 21:16:33,983 INFO L158 Benchmark]: TraceAbstraction took 4232.02ms. Allocated memory is still 96.5MB. Free memory was 60.8MB in the beginning and 59.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:16:33,983 INFO L158 Benchmark]: Witness Printer took 36.37ms. Allocated memory is still 96.5MB. Free memory was 59.5MB in the beginning and 56.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:16:33,984 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 73.4MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.44ms. Allocated memory is still 73.4MB. Free memory was 50.5MB in the beginning and 31.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.35ms. Allocated memory is still 73.4MB. Free memory was 31.9MB in the beginning and 29.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.45ms. Allocated memory was 73.4MB in the beginning and 96.5MB in the end (delta: 23.1MB). Free memory was 29.9MB in the beginning and 76.7MB in the end (delta: -46.7MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * RCFGBuilder took 431.64ms. Allocated memory is still 96.5MB. Free memory was 76.7MB in the beginning and 61.4MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4232.02ms. Allocated memory is still 96.5MB. Free memory was 60.8MB in the beginning and 59.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 36.37ms. Allocated memory is still 96.5MB. Free memory was 59.5MB in the beginning and 56.5MB in the end (delta: 3.0MB). 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: 2.7s, 84 PlacesBefore, 34 PlacesAfterwards, 80 TransitionsBefore, 30 TransitionsAfterwards, 1020 CoEnabledTransitionPairs, 5 FixpointIterations, 35 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 88 TotalNumberOfCompositions, 2970 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1496, independent: 1321, independent conditional: 0, independent unconditional: 1321, dependent: 175, dependent conditional: 0, dependent unconditional: 175, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 605, independent: 569, independent conditional: 0, independent unconditional: 569, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1496, independent: 752, independent conditional: 0, independent unconditional: 752, dependent: 139, dependent conditional: 0, dependent unconditional: 139, unknown: 605, unknown conditional: 0, unknown unconditional: 605] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 687]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 99 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 393 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 330 IncrementalHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 26 mSDtfsCounter, 330 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:16:34,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE