./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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_47-refine-protected2_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 f7e90d4b6ab0561c00fafe8b5db7dd972e67889e2cb8e9e72502cd51ce4f0a76 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:25:27,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:25:27,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:25:27,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:25:27,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:25:27,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:25:27,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:25:27,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:25:27,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:25:27,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:25:27,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:25:27,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:25:27,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:25:27,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:25:27,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:25:27,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:25:27,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:25:27,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:25:27,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:25:27,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:25:27,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:25:27,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:25:27,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:25:27,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:25:27,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:25:27,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:25:27,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:25:27,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:25:27,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:25:27,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:25:27,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:25:27,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:25:27,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:25:27,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:25:27,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:25:27,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:25:27,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:25:27,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:25:27,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:25:27,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:25:27,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:25:27,776 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:25:27,800 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:25:27,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:25:27,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:25:27,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:25:27,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:25:27,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:25:27,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:25:27,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:25:27,803 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:25:27,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:25:27,803 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:25:27,804 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:25:27,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:25:27,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:25:27,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:25:27,804 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:25:27,805 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:25:27,805 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:25:27,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:25:27,805 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:25:27,805 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:25:27,805 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:25:27,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:25:27,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:25:27,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:25:27,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:25:27,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:25:27,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:25:27,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:25:27,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:25:27,807 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:25:27,807 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:25:27,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:25:27,808 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:25:27,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7e90d4b6ab0561c00fafe8b5db7dd972e67889e2cb8e9e72502cd51ce4f0a76 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:25:28,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:25:28,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:25:28,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:25:28,104 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:25:28,105 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:25:28,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2023-09-01 00:25:29,257 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:25:29,535 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:25:29,535 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2023-09-01 00:25:29,546 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0401c0f5e/98392e8239f14961b36dd6e58d279af2/FLAG732104170 [2023-09-01 00:25:29,560 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0401c0f5e/98392e8239f14961b36dd6e58d279af2 [2023-09-01 00:25:29,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:25:29,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:25:29,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:25:29,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:25:29,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:25:29,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:25:29" (1/1) ... [2023-09-01 00:25:29,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e657803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:29, skipping insertion in model container [2023-09-01 00:25:29,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:25:29" (1/1) ... [2023-09-01 00:25:29,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:25:29,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:25:29,792 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_47-refine-protected2_true.i[1094,1107] [2023-09-01 00:25:29,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:25:29,967 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:25:29,978 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_47-refine-protected2_true.i[1094,1107] [2023-09-01 00:25:30,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:25:30,055 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:25:30,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30 WrapperNode [2023-09-01 00:25:30,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:25:30,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:25:30,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:25:30,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:25:30,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,112 INFO L138 Inliner]: procedures = 162, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2023-09-01 00:25:30,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:25:30,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:25:30,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:25:30,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:25:30,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,141 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:25:30,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:25:30,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:25:30,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:25:30,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (1/1) ... [2023-09-01 00:25:30,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:25:30,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:25:30,182 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) [2023-09-01 00:25:30,202 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 [2023-09-01 00:25:30,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:25:30,218 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:25:30,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:25:30,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:25:30,219 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:25:30,219 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:25:30,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:25:30,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:25:30,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:25:30,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:25:30,222 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:25:30,415 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:25:30,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:25:30,546 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:25:30,552 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:25:30,552 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 00:25:30,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:25:30 BoogieIcfgContainer [2023-09-01 00:25:30,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:25:30,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:25:30,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:25:30,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:25:30,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:25:29" (1/3) ... [2023-09-01 00:25:30,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256fce8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:25:30, skipping insertion in model container [2023-09-01 00:25:30,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:25:30" (2/3) ... [2023-09-01 00:25:30,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256fce8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:25:30, skipping insertion in model container [2023-09-01 00:25:30,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:25:30" (3/3) ... [2023-09-01 00:25:30,561 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_47-refine-protected2_true.i [2023-09-01 00:25:30,577 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:25:30,577 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-09-01 00:25:30,577 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:25:30,613 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:25:30,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 137 flow [2023-09-01 00:25:30,672 INFO L130 PetriNetUnfolder]: 3/65 cut-off events. [2023-09-01 00:25:30,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:30,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 3/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-09-01 00:25:30,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 66 transitions, 137 flow [2023-09-01 00:25:30,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 61 transitions, 125 flow [2023-09-01 00:25:30,682 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:25:30,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 61 transitions, 125 flow [2023-09-01 00:25:30,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 61 transitions, 125 flow [2023-09-01 00:25:30,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 61 transitions, 125 flow [2023-09-01 00:25:30,706 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2023-09-01 00:25:30,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:30,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 62 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-09-01 00:25:30,707 INFO L119 LiptonReduction]: Number of co-enabled transitions 406 [2023-09-01 00:25:32,637 INFO L134 LiptonReduction]: Checked pairs total: 916 [2023-09-01 00:25:32,637 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-09-01 00:25:32,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:25:32,655 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;@1487bdff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:25:32,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-09-01 00:25:32,656 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 00:25:32,656 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:32,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:25:32,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:25:32,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-09-01 00:25:32,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:25:32,662 INFO L85 PathProgramCache]: Analyzing trace with hash 247, now seen corresponding path program 1 times [2023-09-01 00:25:32,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:25:32,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194085257] [2023-09-01 00:25:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:25:32,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:25:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:25:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:25:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:25:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194085257] [2023-09-01 00:25:32,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194085257] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:25:32,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:25:32,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:25:32,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683290835] [2023-09-01 00:25:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:25:32,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:25:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:25:32,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:25:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:25:32,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 128 [2023-09-01 00:25:32,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 39 flow. Second operand has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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) [2023-09-01 00:25:32,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:25:32,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 128 [2023-09-01 00:25:32,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:25:32,859 INFO L130 PetriNetUnfolder]: 22/55 cut-off events. [2023-09-01 00:25:32,859 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:32,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 55 events. 22/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 185 event pairs, 18 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 102. Up to 52 conditions per place. [2023-09-01 00:25:32,861 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 12 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-09-01 00:25:32,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 14 transitions, 55 flow [2023-09-01 00:25:32,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:25:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:25:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 137 transitions. [2023-09-01 00:25:32,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53515625 [2023-09-01 00:25:32,881 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 137 transitions. [2023-09-01 00:25:32,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 137 transitions. [2023-09-01 00:25:32,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:25:32,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 137 transitions. [2023-09-01 00:25:32,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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) [2023-09-01 00:25:32,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-09-01 00:25:32,896 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2023-09-01 00:25:32,898 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 39 flow. Second operand 2 states and 137 transitions. [2023-09-01 00:25:32,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 14 transitions, 55 flow [2023-09-01 00:25:32,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:25:32,902 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 30 flow [2023-09-01 00:25:32,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2023-09-01 00:25:32,907 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2023-09-01 00:25:32,907 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 30 flow [2023-09-01 00:25:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.5) internal successors, (123), 2 states have internal predecessors, (123), 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) [2023-09-01 00:25:32,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:25:32,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 00:25:32,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:25:32,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-09-01 00:25:32,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:25:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash 231963495, now seen corresponding path program 1 times [2023-09-01 00:25:32,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:25:32,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267383163] [2023-09-01 00:25:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:25:32,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:25:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:25:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:25:33,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:25:33,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267383163] [2023-09-01 00:25:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267383163] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:25:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:25:33,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:25:33,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743173457] [2023-09-01 00:25:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:25:33,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:25:33,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:25:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:25:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:25:33,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 128 [2023-09-01 00:25:33,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-09-01 00:25:33,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:25:33,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 128 [2023-09-01 00:25:33,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:25:33,097 INFO L130 PetriNetUnfolder]: 19/54 cut-off events. [2023-09-01 00:25:33,097 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:33,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 54 events. 19/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 163 event pairs, 7 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 110. Up to 29 conditions per place. [2023-09-01 00:25:33,098 INFO L137 encePairwiseOnDemand]: 121/128 looper letters, 14 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2023-09-01 00:25:33,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 19 transitions, 78 flow [2023-09-01 00:25:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:25:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:25:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-09-01 00:25:33,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-09-01 00:25:33,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-09-01 00:25:33,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-09-01 00:25:33,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:25:33,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-09-01 00:25:33,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 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) [2023-09-01 00:25:33,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-09-01 00:25:33,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-09-01 00:25:33,104 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 30 flow. Second operand 3 states and 192 transitions. [2023-09-01 00:25:33,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 19 transitions, 78 flow [2023-09-01 00:25:33,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 78 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 00:25:33,106 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 62 flow [2023-09-01 00:25:33,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-09-01 00:25:33,106 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2023-09-01 00:25:33,107 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 62 flow [2023-09-01 00:25:33,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-09-01 00:25:33,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:25:33,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 00:25:33,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:25:33,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-09-01 00:25:33,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:25:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1399064898, now seen corresponding path program 1 times [2023-09-01 00:25:33,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:25:33,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034751117] [2023-09-01 00:25:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:25:33,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:25:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:25:33,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:25:33,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:25:33,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034751117] [2023-09-01 00:25:33,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034751117] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:25:33,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:25:33,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:25:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760197062] [2023-09-01 00:25:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:25:33,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:25:33,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:25:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:25:33,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:25:33,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 128 [2023-09-01 00:25:33,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-09-01 00:25:33,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:25:33,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 128 [2023-09-01 00:25:33,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:25:33,328 INFO L130 PetriNetUnfolder]: 10/37 cut-off events. [2023-09-01 00:25:33,329 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-09-01 00:25:33,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 37 events. 10/37 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 108 event pairs, 8 based on Foata normal form. 8/42 useless extension candidates. Maximal degree in co-relation 101. Up to 33 conditions per place. [2023-09-01 00:25:33,330 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 7 selfloop transitions, 1 changer transitions 4/14 dead transitions. [2023-09-01 00:25:33,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 80 flow [2023-09-01 00:25:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:25:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:25:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-09-01 00:25:33,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2023-09-01 00:25:33,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-09-01 00:25:33,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-09-01 00:25:33,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:25:33,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-09-01 00:25:33,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2023-09-01 00:25:33,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-09-01 00:25:33,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-09-01 00:25:33,338 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 62 flow. Second operand 3 states and 183 transitions. [2023-09-01 00:25:33,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 80 flow [2023-09-01 00:25:33,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:25:33,339 INFO L231 Difference]: Finished difference. Result has 20 places, 10 transitions, 36 flow [2023-09-01 00:25:33,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=10} [2023-09-01 00:25:33,340 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2023-09-01 00:25:33,340 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 10 transitions, 36 flow [2023-09-01 00:25:33,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-09-01 00:25:33,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:25:33,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:25:33,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:25:33,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-09-01 00:25:33,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:25:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash -445248200, now seen corresponding path program 1 times [2023-09-01 00:25:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:25:33,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211983723] [2023-09-01 00:25:33,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:25:33,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:25:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:25:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:25:33,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:25:33,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211983723] [2023-09-01 00:25:33,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211983723] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:25:33,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:25:33,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:25:33,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738093079] [2023-09-01 00:25:33,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:25:33,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:25:33,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:25:33,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:25:33,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:25:33,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 128 [2023-09-01 00:25:33,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 10 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-09-01 00:25:33,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:25:33,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 128 [2023-09-01 00:25:33,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:25:33,462 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-09-01 00:25:33,462 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:33,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 3/13 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-09-01 00:25:33,463 INFO L137 encePairwiseOnDemand]: 125/128 looper letters, 4 selfloop transitions, 3 changer transitions 1/9 dead transitions. [2023-09-01 00:25:33,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 9 transitions, 46 flow [2023-09-01 00:25:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:25:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:25:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-09-01 00:25:33,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2023-09-01 00:25:33,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-09-01 00:25:33,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-09-01 00:25:33,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:25:33,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-09-01 00:25:33,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2023-09-01 00:25:33,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-09-01 00:25:33,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-09-01 00:25:33,466 INFO L175 Difference]: Start difference. First operand has 20 places, 10 transitions, 36 flow. Second operand 3 states and 177 transitions. [2023-09-01 00:25:33,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 9 transitions, 46 flow [2023-09-01 00:25:33,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 9 transitions, 45 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:25:33,467 INFO L231 Difference]: Finished difference. Result has 18 places, 8 transitions, 33 flow [2023-09-01 00:25:33,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=18, PETRI_TRANSITIONS=8} [2023-09-01 00:25:33,468 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -2 predicate places. [2023-09-01 00:25:33,468 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 8 transitions, 33 flow [2023-09-01 00:25:33,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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) [2023-09-01 00:25:33,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:25:33,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:25:33,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:25:33,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2023-09-01 00:25:33,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:25:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash -931511877, now seen corresponding path program 1 times [2023-09-01 00:25:33,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:25:33,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370554132] [2023-09-01 00:25:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:25:33,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:25:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:25:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 00:25:33,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:25:33,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370554132] [2023-09-01 00:25:33,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370554132] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:25:33,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:25:33,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:25:33,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921689137] [2023-09-01 00:25:33,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:25:33,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:25:33,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:25:33,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:25:33,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:25:33,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 128 [2023-09-01 00:25:33,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 8 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:25:33,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:25:33,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 128 [2023-09-01 00:25:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:25:33,557 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-09-01 00:25:33,558 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:25:33,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-09-01 00:25:33,558 INFO L137 encePairwiseOnDemand]: 126/128 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-09-01 00:25:33,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 8 transitions, 49 flow [2023-09-01 00:25:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:25:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:25:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2023-09-01 00:25:33,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-09-01 00:25:33,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2023-09-01 00:25:33,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2023-09-01 00:25:33,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:25:33,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2023-09-01 00:25:33,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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) [2023-09-01 00:25:33,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-09-01 00:25:33,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2023-09-01 00:25:33,563 INFO L175 Difference]: Start difference. First operand has 18 places, 8 transitions, 33 flow. Second operand 3 states and 180 transitions. [2023-09-01 00:25:33,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 8 transitions, 49 flow [2023-09-01 00:25:33,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 8 transitions, 43 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:25:33,564 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-09-01 00:25:33,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-09-01 00:25:33,567 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -4 predicate places. [2023-09-01 00:25:33,567 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-09-01 00:25:33,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:25:33,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 6 remaining) [2023-09-01 00:25:33,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 6 remaining) [2023-09-01 00:25:33,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2023-09-01 00:25:33,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2023-09-01 00:25:33,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-09-01 00:25:33,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-09-01 00:25:33,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:25:33,571 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-09-01 00:25:33,575 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:25:33,575 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:25:33,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:25:33 BasicIcfg [2023-09-01 00:25:33,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:25:33,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:25:33,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:25:33,583 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:25:33,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:25:30" (3/4) ... [2023-09-01 00:25:33,586 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 00:25:33,591 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-09-01 00:25:33,596 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-09-01 00:25:33,597 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 00:25:33,597 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 00:25:33,597 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 00:25:33,631 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 00:25:33,631 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:25:33,631 INFO L158 Benchmark]: Toolchain (without parser) took 4068.06ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 39.2MB in the beginning and 41.5MB in the end (delta: -2.3MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2023-09-01 00:25:33,632 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 33.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:25:33,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.29ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 35.5MB in the end (delta: 3.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 00:25:33,632 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.18ms. Allocated memory is still 62.9MB. Free memory was 35.3MB in the beginning and 33.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:25:33,632 INFO L158 Benchmark]: Boogie Preprocessor took 30.82ms. Allocated memory is still 62.9MB. Free memory was 33.6MB in the beginning and 32.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:25:33,633 INFO L158 Benchmark]: RCFGBuilder took 410.04ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 32.2MB in the beginning and 48.5MB in the end (delta: -16.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2023-09-01 00:25:33,633 INFO L158 Benchmark]: TraceAbstraction took 3026.96ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 47.8MB in the beginning and 44.3MB in the end (delta: 3.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-09-01 00:25:33,633 INFO L158 Benchmark]: Witness Printer took 47.92ms. Allocated memory is still 92.3MB. Free memory was 44.3MB in the beginning and 41.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:25:33,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 33.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.29ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 35.5MB in the end (delta: 3.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.18ms. Allocated memory is still 62.9MB. Free memory was 35.3MB in the beginning and 33.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.82ms. Allocated memory is still 62.9MB. Free memory was 33.6MB in the beginning and 32.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 410.04ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 32.2MB in the beginning and 48.5MB in the end (delta: -16.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3026.96ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 47.8MB in the beginning and 44.3MB in the end (delta: 3.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Witness Printer took 47.92ms. Allocated memory is still 92.3MB. Free memory was 44.3MB in the beginning and 41.5MB in the end (delta: 2.8MB). 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: 1.9s, 62 PlacesBefore, 20 PlacesAfterwards, 61 TransitionsBefore, 18 TransitionsAfterwards, 406 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 916 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 449, independent: 326, independent conditional: 0, independent unconditional: 326, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 235, independent: 208, independent conditional: 0, independent unconditional: 208, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 449, independent: 118, independent conditional: 0, independent unconditional: 118, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 235, unknown conditional: 0, unknown unconditional: 235] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 689]: 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, 73 locations, 6 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: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 23 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 62 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 00:25:33,653 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