./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.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/13-privatized_42-traces-ex-mini_true.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 a1b66927274f90f2d29b42a27dd6906879a79472ec3d29ac0ef54d445fc2204b --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 21:35:22,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:35:22,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:35:23,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:35:23,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:35:23,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:35:23,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:35:23,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:35:23,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:35:23,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:35:23,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:35:23,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:35:23,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:35:23,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:35:23,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:35:23,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:35:23,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:35:23,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:35:23,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:35:23,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:35:23,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:35:23,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:35:23,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:35:23,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:35:23,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:35:23,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:35:23,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:35:23,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:35:23,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:35:23,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:35:23,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:35:23,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:35:23,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:35:23,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:35:23,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:35:23,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:35:23,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:35:23,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:35:23,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:35:23,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:35:23,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:35:23,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:35:23,137 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:35:23,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:35:23,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:35:23,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:35:23,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:35:23,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:35:23,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:35:23,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:35:23,141 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:35:23,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:35:23,142 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:35:23,142 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:35:23,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:35:23,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:35:23,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:35:23,143 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:35:23,143 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:35:23,144 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:35:23,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:35:23,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:35:23,144 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:35:23,144 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:35:23,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:35:23,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:35:23,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:35:23,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:35:23,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:35:23,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:35:23,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:35:23,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:35:23,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:35:23,147 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:35:23,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:35:23,147 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:35:23,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1b66927274f90f2d29b42a27dd6906879a79472ec3d29ac0ef54d445fc2204b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:35:23,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:35:23,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:35:23,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:35:23,478 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:35:23,478 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:35:23,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-29 21:35:24,629 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:35:24,844 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:35:24,844 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-29 21:35:24,854 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22247bbe7/2a0eaf2ee26f4192bba1760746cbb896/FLAG37e674fcc [2023-08-29 21:35:24,868 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22247bbe7/2a0eaf2ee26f4192bba1760746cbb896 [2023-08-29 21:35:24,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:35:24,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:35:24,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:35:24,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:35:24,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:35:24,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:35:24" (1/1) ... [2023-08-29 21:35:24,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d230d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:24, skipping insertion in model container [2023-08-29 21:35:24,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:35:24" (1/1) ... [2023-08-29 21:35:24,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:35:24,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:35:25,098 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i[1091,1104] [2023-08-29 21:35:25,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:35:25,274 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:35:25,289 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i[1091,1104] [2023-08-29 21:35:25,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:35:25,372 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:35:25,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25 WrapperNode [2023-08-29 21:35:25,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:35:25,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:35:25,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:35:25,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:35:25,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,432 INFO L138 Inliner]: procedures = 162, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2023-08-29 21:35:25,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:35:25,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:35:25,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:35:25,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:35:25,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:35:25,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:35:25,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:35:25,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:35:25,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (1/1) ... [2023-08-29 21:35:25,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:35:25,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:35:25,522 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 21:35:25,544 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 21:35:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:35:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:35:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:35:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:35:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:35:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:35:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:35:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:35:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:35:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:35:25,563 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 21:35:25,735 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:35:25,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:35:25,946 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:35:25,953 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:35:25,954 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:35:25,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:35:25 BoogieIcfgContainer [2023-08-29 21:35:25,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:35:25,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:35:25,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:35:25,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:35:25,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:35:24" (1/3) ... [2023-08-29 21:35:25,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7496cb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:35:25, skipping insertion in model container [2023-08-29 21:35:25,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:35:25" (2/3) ... [2023-08-29 21:35:25,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7496cb22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:35:25, skipping insertion in model container [2023-08-29 21:35:25,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:35:25" (3/3) ... [2023-08-29 21:35:25,963 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_42-traces-ex-mini_true.i [2023-08-29 21:35:25,979 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:35:25,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 21:35:25,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:35:26,041 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:35:26,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 161 flow [2023-08-29 21:35:26,114 INFO L130 PetriNetUnfolder]: 1/77 cut-off events. [2023-08-29 21:35:26,115 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:26,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 1/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-08-29 21:35:26,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 78 transitions, 161 flow [2023-08-29 21:35:26,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 73 transitions, 149 flow [2023-08-29 21:35:26,130 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:35:26,143 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 73 transitions, 149 flow [2023-08-29 21:35:26,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 73 transitions, 149 flow [2023-08-29 21:35:26,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 73 transitions, 149 flow [2023-08-29 21:35:26,164 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2023-08-29 21:35:26,164 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:26,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2023-08-29 21:35:26,173 INFO L119 LiptonReduction]: Number of co-enabled transitions 506 [2023-08-29 21:35:29,101 INFO L134 LiptonReduction]: Checked pairs total: 1664 [2023-08-29 21:35:29,102 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-29 21:35:29,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:35:29,121 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;@1de07154, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:35:29,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-29 21:35:29,123 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:35:29,123 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:29,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:29,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:35:29,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 21:35:29,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:29,129 INFO L85 PathProgramCache]: Analyzing trace with hash 273, now seen corresponding path program 1 times [2023-08-29 21:35:29,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:29,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525377963] [2023-08-29 21:35:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:29,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:29,229 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 21:35:29,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:29,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525377963] [2023-08-29 21:35:29,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525377963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:29,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:29,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:35:29,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875174093] [2023-08-29 21:35:29,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:29,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:35:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:29,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:35:29,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:35:29,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 148 [2023-08-29 21:35:29,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 21:35:29,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:29,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 148 [2023-08-29 21:35:29,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:29,372 INFO L130 PetriNetUnfolder]: 18/61 cut-off events. [2023-08-29 21:35:29,372 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:29,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 61 events. 18/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 193 event pairs, 18 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 104. Up to 48 conditions per place. [2023-08-29 21:35:29,374 INFO L137 encePairwiseOnDemand]: 145/148 looper letters, 11 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-08-29 21:35:29,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 57 flow [2023-08-29 21:35:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:35:29,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:35:29,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 164 transitions. [2023-08-29 21:35:29,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540540540540541 [2023-08-29 21:35:29,385 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 164 transitions. [2023-08-29 21:35:29,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 164 transitions. [2023-08-29 21:35:29,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:29,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 164 transitions. [2023-08-29 21:35:29,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 21:35:29,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:35:29,394 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 21:35:29,396 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 43 flow. Second operand 2 states and 164 transitions. [2023-08-29 21:35:29,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 57 flow [2023-08-29 21:35:29,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:35:29,399 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 34 flow [2023-08-29 21:35:29,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2023-08-29 21:35:29,404 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2023-08-29 21:35:29,405 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 34 flow [2023-08-29 21:35:29,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 21:35:29,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:29,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:35:29,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:35:29,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 21:35:29,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:29,407 INFO L85 PathProgramCache]: Analyzing trace with hash -579338037, now seen corresponding path program 1 times [2023-08-29 21:35:29,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:29,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747759808] [2023-08-29 21:35:29,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:29,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:29,667 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 21:35:29,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:29,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747759808] [2023-08-29 21:35:29,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747759808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:29,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:29,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:29,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828955029] [2023-08-29 21:35:29,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:29,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:29,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:29,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:29,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:29,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 148 [2023-08-29 21:35:29,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:29,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:29,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 148 [2023-08-29 21:35:29,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:29,744 INFO L130 PetriNetUnfolder]: 21/73 cut-off events. [2023-08-29 21:35:29,747 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:29,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 73 events. 21/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 230 event pairs, 15 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 132. Up to 46 conditions per place. [2023-08-29 21:35:29,749 INFO L137 encePairwiseOnDemand]: 143/148 looper letters, 14 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2023-08-29 21:35:29,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 82 flow [2023-08-29 21:35:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-08-29 21:35:29,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292792792792793 [2023-08-29 21:35:29,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-08-29 21:35:29,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-08-29 21:35:29,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:29,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-08-29 21:35:29,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 21:35:29,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 21:35:29,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 21:35:29,762 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 34 flow. Second operand 3 states and 235 transitions. [2023-08-29 21:35:29,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 82 flow [2023-08-29 21:35:29,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:35:29,764 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 60 flow [2023-08-29 21:35:29,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2023-08-29 21:35:29,766 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-08-29 21:35:29,766 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 60 flow [2023-08-29 21:35:29,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:29,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:29,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:29,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:35:29,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 21:35:29,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1391686009, now seen corresponding path program 1 times [2023-08-29 21:35:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048507846] [2023-08-29 21:35:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:29,891 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 21:35:29,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:29,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048507846] [2023-08-29 21:35:29,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048507846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:29,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:29,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:35:29,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754714798] [2023-08-29 21:35:29,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:29,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:35:29,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:35:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:35:29,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 148 [2023-08-29 21:35:29,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:29,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:29,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 148 [2023-08-29 21:35:29,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:30,017 INFO L130 PetriNetUnfolder]: 20/76 cut-off events. [2023-08-29 21:35:30,018 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-29 21:35:30,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 76 events. 20/76 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 267 event pairs, 8 based on Foata normal form. 5/81 useless extension candidates. Maximal degree in co-relation 175. Up to 37 conditions per place. [2023-08-29 21:35:30,020 INFO L137 encePairwiseOnDemand]: 142/148 looper letters, 15 selfloop transitions, 6 changer transitions 0/24 dead transitions. [2023-08-29 21:35:30,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 118 flow [2023-08-29 21:35:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2023-08-29 21:35:30,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2023-08-29 21:35:30,026 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 294 transitions. [2023-08-29 21:35:30,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 294 transitions. [2023-08-29 21:35:30,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:30,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 294 transitions. [2023-08-29 21:35:30,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 21:35:30,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 21:35:30,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 21:35:30,033 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 60 flow. Second operand 4 states and 294 transitions. [2023-08-29 21:35:30,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 118 flow [2023-08-29 21:35:30,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:30,035 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 77 flow [2023-08-29 21:35:30,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-08-29 21:35:30,036 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-29 21:35:30,036 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 77 flow [2023-08-29 21:35:30,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:30,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:30,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:30,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:35:30,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 21:35:30,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1880806777, now seen corresponding path program 1 times [2023-08-29 21:35:30,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:30,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476368329] [2023-08-29 21:35:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:30,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:30,204 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 21:35:30,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:30,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476368329] [2023-08-29 21:35:30,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476368329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:30,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:30,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:30,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216925164] [2023-08-29 21:35:30,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:30,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:30,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:30,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:30,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:30,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 148 [2023-08-29 21:35:30,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 21:35:30,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:30,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 148 [2023-08-29 21:35:30,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:30,258 INFO L130 PetriNetUnfolder]: 10/55 cut-off events. [2023-08-29 21:35:30,258 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-29 21:35:30,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 55 events. 10/55 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 166 event pairs, 8 based on Foata normal form. 9/62 useless extension candidates. Maximal degree in co-relation 135. Up to 31 conditions per place. [2023-08-29 21:35:30,259 INFO L137 encePairwiseOnDemand]: 146/148 looper letters, 8 selfloop transitions, 1 changer transitions 7/19 dead transitions. [2023-08-29 21:35:30,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 97 flow [2023-08-29 21:35:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2023-08-29 21:35:30,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2023-08-29 21:35:30,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2023-08-29 21:35:30,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2023-08-29 21:35:30,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:30,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2023-08-29 21:35:30,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 21:35:30,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 21:35:30,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 21:35:30,264 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 77 flow. Second operand 3 states and 224 transitions. [2023-08-29 21:35:30,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 97 flow [2023-08-29 21:35:30,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:35:30,265 INFO L231 Difference]: Finished difference. Result has 26 places, 12 transitions, 46 flow [2023-08-29 21:35:30,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=26, PETRI_TRANSITIONS=12} [2023-08-29 21:35:30,266 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-29 21:35:30,266 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 46 flow [2023-08-29 21:35:30,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 21:35:30,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:30,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:30,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:35:30,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 21:35:30,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash -195154462, now seen corresponding path program 1 times [2023-08-29 21:35:30,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:30,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43802977] [2023-08-29 21:35:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:30,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:30,388 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 21:35:30,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:30,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43802977] [2023-08-29 21:35:30,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43802977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:30,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:30,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:35:30,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001957924] [2023-08-29 21:35:30,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:30,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:35:30,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:30,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:35:30,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:35:30,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 148 [2023-08-29 21:35:30,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 12 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 21:35:30,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:30,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 148 [2023-08-29 21:35:30,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:30,479 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-08-29 21:35:30,479 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 21:35:30,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 26 events. 6/26 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 2 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 68. Up to 12 conditions per place. [2023-08-29 21:35:30,480 INFO L137 encePairwiseOnDemand]: 144/148 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-29 21:35:30,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 13 transitions, 73 flow [2023-08-29 21:35:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-08-29 21:35:30,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46790540540540543 [2023-08-29 21:35:30,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-08-29 21:35:30,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-08-29 21:35:30,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:30,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-08-29 21:35:30,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 21:35:30,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 21:35:30,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 21:35:30,485 INFO L175 Difference]: Start difference. First operand has 26 places, 12 transitions, 46 flow. Second operand 4 states and 277 transitions. [2023-08-29 21:35:30,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 13 transitions, 73 flow [2023-08-29 21:35:30,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 58 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 21:35:30,487 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-29 21:35:30,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-29 21:35:30,487 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2023-08-29 21:35:30,488 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-29 21:35:30,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 21:35:30,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2023-08-29 21:35:30,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-29 21:35:30,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2023-08-29 21:35:30,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-08-29 21:35:30,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-29 21:35:30,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:35:30,492 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-29 21:35:30,495 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:35:30,496 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:35:30,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:35:30 BasicIcfg [2023-08-29 21:35:30,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:35:30,500 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:35:30,500 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:35:30,500 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:35:30,501 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:35:25" (3/4) ... [2023-08-29 21:35:30,503 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:35:30,510 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:35:30,513 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-29 21:35:30,514 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 21:35:30,514 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:35:30,514 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 21:35:30,545 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:35:30,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:35:30,546 INFO L158 Benchmark]: Toolchain (without parser) took 5673.94ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 67.6MB in the beginning and 89.6MB in the end (delta: -22.0MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2023-08-29 21:35:30,546 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:35:30,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.21ms. Allocated memory is still 88.1MB. Free memory was 67.5MB in the beginning and 48.3MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-29 21:35:30,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.84ms. Allocated memory is still 88.1MB. Free memory was 48.3MB in the beginning and 46.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:35:30,547 INFO L158 Benchmark]: Boogie Preprocessor took 48.42ms. Allocated memory is still 88.1MB. Free memory was 46.5MB in the beginning and 45.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:35:30,547 INFO L158 Benchmark]: RCFGBuilder took 473.49ms. Allocated memory is still 88.1MB. Free memory was 45.1MB in the beginning and 55.3MB in the end (delta: -10.3MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2023-08-29 21:35:30,548 INFO L158 Benchmark]: TraceAbstraction took 4541.57ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 54.9MB in the beginning and 92.7MB in the end (delta: -37.8MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2023-08-29 21:35:30,548 INFO L158 Benchmark]: Witness Printer took 45.19ms. Allocated memory is still 130.0MB. Free memory was 92.7MB in the beginning and 89.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:35:30,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.21ms. Allocated memory is still 88.1MB. Free memory was 67.5MB in the beginning and 48.3MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.84ms. Allocated memory is still 88.1MB. Free memory was 48.3MB in the beginning and 46.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.42ms. Allocated memory is still 88.1MB. Free memory was 46.5MB in the beginning and 45.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 473.49ms. Allocated memory is still 88.1MB. Free memory was 45.1MB in the beginning and 55.3MB in the end (delta: -10.3MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4541.57ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 54.9MB in the beginning and 92.7MB in the end (delta: -37.8MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * Witness Printer took 45.19ms. Allocated memory is still 130.0MB. Free memory was 92.7MB in the beginning and 89.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 76 PlacesBefore, 23 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 506 CoEnabledTransitionPairs, 6 FixpointIterations, 43 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 70 TotalNumberOfCompositions, 1664 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 702, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 266, independent: 242, independent conditional: 0, independent unconditional: 242, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 702, independent: 307, independent conditional: 0, independent unconditional: 307, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 266, unknown conditional: 0, unknown unconditional: 266] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 694]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 91 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 183 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 261 IncrementalHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 5 mSDtfsCounter, 261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=3, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:35:30,575 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