./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c -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 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:17:49,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:17:49,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:17:49,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:17:49,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:17:49,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:17:49,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:17:49,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:17:49,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:17:49,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:17:49,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:17:49,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:17:49,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:17:49,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:17:49,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:17:49,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:17:49,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:17:49,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:17:49,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:17:49,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:17:49,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:17:49,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:17:49,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:17:49,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:17:49,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:17:49,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:17:49,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:17:49,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:17:49,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:17:49,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:17:49,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:17:49,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:17:49,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:17:49,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:17:49,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:17:49,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:17:49,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:17:49,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:17:49,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:17:49,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:17:49,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:17:49,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:17:49,116 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:17:49,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:17:49,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:17:49,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:17:49,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:17:49,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:17:49,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:17:49,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:17:49,118 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:17:49,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:17:49,119 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:17:49,119 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:17:49,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:17:49,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:17:49,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:17:49,120 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:17:49,120 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:17:49,120 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:17:49,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:17:49,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:17:49,121 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:17:49,121 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:17:49,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:17:49,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:17:49,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:17:49,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:17:49,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:17:49,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:17:49,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:17:49,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:17:49,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:17:49,122 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:17:49,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:17:49,123 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:17:49,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:17:49,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:17:49,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:17:49,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:17:49,433 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:17:49,435 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:17:49,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2023-08-30 05:17:50,404 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:17:50,618 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:17:50,618 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2023-08-30 05:17:50,627 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32857acfe/14816cb6403145df866e36a8453adea7/FLAGa83a4e32b [2023-08-30 05:17:50,639 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32857acfe/14816cb6403145df866e36a8453adea7 [2023-08-30 05:17:50,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:17:50,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:17:50,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:17:50,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:17:50,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:17:50,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f64106e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50, skipping insertion in model container [2023-08-30 05:17:50,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:17:50,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:17:50,815 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2023-08-30 05:17:50,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:17:50,830 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:17:50,860 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2023-08-30 05:17:50,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:17:50,877 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:17:50,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50 WrapperNode [2023-08-30 05:17:50,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:17:50,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:17:50,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:17:50,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:17:50,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,928 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 169 [2023-08-30 05:17:50,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:17:50,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:17:50,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:17:50,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:17:50,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,961 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:17:50,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:17:50,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:17:50,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:17:50,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (1/1) ... [2023-08-30 05:17:50,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:17:50,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:17:50,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:17:50,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:17:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:17:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:17:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:17:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:17:51,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:17:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:17:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:17:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:17:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:17:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:17:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:17:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:17:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:17:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:17:51,036 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:17:51,103 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:17:51,104 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:17:51,403 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:17:51,410 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:17:51,410 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 05:17:51,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:17:51 BoogieIcfgContainer [2023-08-30 05:17:51,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:17:51,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:17:51,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:17:51,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:17:51,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:17:50" (1/3) ... [2023-08-30 05:17:51,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7284c4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:17:51, skipping insertion in model container [2023-08-30 05:17:51,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:17:50" (2/3) ... [2023-08-30 05:17:51,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7284c4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:17:51, skipping insertion in model container [2023-08-30 05:17:51,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:17:51" (3/3) ... [2023-08-30 05:17:51,424 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2023-08-30 05:17:51,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:17:51,438 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 05:17:51,438 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:17:51,561 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:17:51,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 211 transitions, 446 flow [2023-08-30 05:17:51,653 INFO L130 PetriNetUnfolder]: 13/208 cut-off events. [2023-08-30 05:17:51,653 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:17:51,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 208 events. 13/208 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 420 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-30 05:17:51,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 211 transitions, 446 flow [2023-08-30 05:17:51,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 204 transitions, 426 flow [2023-08-30 05:17:51,670 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:17:51,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 204 transitions, 426 flow [2023-08-30 05:17:51,678 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 204 transitions, 426 flow [2023-08-30 05:17:51,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 204 transitions, 426 flow [2023-08-30 05:17:51,737 INFO L130 PetriNetUnfolder]: 13/204 cut-off events. [2023-08-30 05:17:51,739 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:17:51,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 204 events. 13/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 419 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-30 05:17:51,743 INFO L119 LiptonReduction]: Number of co-enabled transitions 10608 [2023-08-30 05:17:57,100 INFO L134 LiptonReduction]: Checked pairs total: 10225 [2023-08-30 05:17:57,100 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-08-30 05:17:57,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:17:57,114 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;@7e4f70a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:17:57,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 05:17:57,116 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 05:17:57,116 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:17:57,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:57,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:17:57,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:57,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash 852, now seen corresponding path program 1 times [2023-08-30 05:17:57,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:57,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615602602] [2023-08-30 05:17:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:57,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:17:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:17:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:17:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:17:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615602602] [2023-08-30 05:17:57,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615602602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:17:57,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:17:57,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:17:57,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545009371] [2023-08-30 05:17:57,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:17:57,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:17:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:17:57,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:17:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:17:57,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 453 [2023-08-30 05:17:57,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:17:57,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 453 [2023-08-30 05:17:57,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:17:57,297 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-08-30 05:17:57,297 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 05:17:57,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 458 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-08-30 05:17:57,300 INFO L137 encePairwiseOnDemand]: 450/453 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-30 05:17:57,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-08-30 05:17:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:17:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:17:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 423 transitions. [2023-08-30 05:17:57,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46688741721854304 [2023-08-30 05:17:57,316 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 423 transitions. [2023-08-30 05:17:57,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 423 transitions. [2023-08-30 05:17:57,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:17:57,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 423 transitions. [2023-08-30 05:17:57,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 211.5) internal successors, (423), 2 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 453.0) internal successors, (1359), 3 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,340 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 453.0) internal successors, (1359), 3 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,341 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 423 transitions. [2023-08-30 05:17:57,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-08-30 05:17:57,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:17:57,345 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-08-30 05:17:57,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-30 05:17:57,348 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-30 05:17:57,348 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-08-30 05:17:57,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.5) internal successors, (395), 2 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:57,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:17:57,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:17:57,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:57,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash 836480, now seen corresponding path program 1 times [2023-08-30 05:17:57,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:57,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589721436] [2023-08-30 05:17:57,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:57,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:17:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:17:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:17:57,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:17:57,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589721436] [2023-08-30 05:17:57,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589721436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:17:57,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:17:57,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:17:57,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329171515] [2023-08-30 05:17:57,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:17:57,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:17:57,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:17:57,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:17:57,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:17:57,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 453 [2023-08-30 05:17:57,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:17:57,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 453 [2023-08-30 05:17:57,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:17:57,658 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-08-30 05:17:57,658 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:17:57,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 418 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-08-30 05:17:57,660 INFO L137 encePairwiseOnDemand]: 450/453 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-30 05:17:57,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-08-30 05:17:57,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:17:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:17:57,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2023-08-30 05:17:57,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429727740986019 [2023-08-30 05:17:57,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2023-08-30 05:17:57,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2023-08-30 05:17:57,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:17:57,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2023-08-30 05:17:57,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,667 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 602 transitions. [2023-08-30 05:17:57,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-08-30 05:17:57,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:17:57,668 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-08-30 05:17:57,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-30 05:17:57,669 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-30 05:17:57,669 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-08-30 05:17:57,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:57,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:17:57,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:17:57,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:57,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:57,671 INFO L85 PathProgramCache]: Analyzing trace with hash 836481, now seen corresponding path program 1 times [2023-08-30 05:17:57,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:57,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079982572] [2023-08-30 05:17:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:57,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:17:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:17:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:17:57,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:17:57,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079982572] [2023-08-30 05:17:57,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079982572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:17:57,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:17:57,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:17:57,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319524801] [2023-08-30 05:17:57,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:17:57,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:17:57,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:17:57,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:17:57,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:17:57,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 453 [2023-08-30 05:17:57,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:17:57,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 453 [2023-08-30 05:17:57,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:17:57,863 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-08-30 05:17:57,863 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:17:57,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 380 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-08-30 05:17:57,865 INFO L137 encePairwiseOnDemand]: 450/453 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-30 05:17:57,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-08-30 05:17:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:17:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:17:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2023-08-30 05:17:57,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304635761589404 [2023-08-30 05:17:57,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2023-08-30 05:17:57,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2023-08-30 05:17:57,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:17:57,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2023-08-30 05:17:57,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,871 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 585 transitions. [2023-08-30 05:17:57,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-08-30 05:17:57,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:17:57,873 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-08-30 05:17:57,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-08-30 05:17:57,874 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 05:17:57,876 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-08-30 05:17:57,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:57,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:17:57,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:17:57,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:57,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash 803877823, now seen corresponding path program 1 times [2023-08-30 05:17:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:57,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387691701] [2023-08-30 05:17:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:57,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:17:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:17:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:17:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:17:57,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387691701] [2023-08-30 05:17:57,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387691701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:17:57,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:17:57,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:17:57,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986618929] [2023-08-30 05:17:57,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:17:57,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:17:57,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:17:57,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:17:57,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:17:57,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 453 [2023-08-30 05:17:57,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:57,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:17:57,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 453 [2023-08-30 05:17:57,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:17:58,015 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-08-30 05:17:58,015 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:17:58,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 338 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-08-30 05:17:58,019 INFO L137 encePairwiseOnDemand]: 450/453 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-30 05:17:58,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-08-30 05:17:58,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:17:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:17:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-30 05:17:58,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44002943340691686 [2023-08-30 05:17:58,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-30 05:17:58,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-30 05:17:58,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:17:58,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-30 05:17:58,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,026 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 598 transitions. [2023-08-30 05:17:58,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-08-30 05:17:58,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:17:58,027 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-08-30 05:17:58,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-30 05:17:58,028 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-30 05:17:58,028 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-08-30 05:17:58,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:58,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:17:58,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:17:58,030 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:58,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash 803877821, now seen corresponding path program 1 times [2023-08-30 05:17:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:58,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934106170] [2023-08-30 05:17:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:58,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:17:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:17:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:17:58,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:17:58,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934106170] [2023-08-30 05:17:58,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934106170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:17:58,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:17:58,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:17:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879438418] [2023-08-30 05:17:58,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:17:58,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:17:58,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:17:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:17:58,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:17:58,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 453 [2023-08-30 05:17:58,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:17:58,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 453 [2023-08-30 05:17:58,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:17:58,148 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-08-30 05:17:58,149 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:17:58,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 299 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-08-30 05:17:58,149 INFO L137 encePairwiseOnDemand]: 450/453 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-30 05:17:58,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-08-30 05:17:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:17:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:17:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-08-30 05:17:58,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275202354672553 [2023-08-30 05:17:58,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-08-30 05:17:58,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-08-30 05:17:58,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:17:58,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-08-30 05:17:58,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,156 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 581 transitions. [2023-08-30 05:17:58,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-08-30 05:17:58,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:17:58,157 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-08-30 05:17:58,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-30 05:17:58,159 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-30 05:17:58,159 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-08-30 05:17:58,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:58,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:17:58,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:17:58,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:58,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash -567507648, now seen corresponding path program 1 times [2023-08-30 05:17:58,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:58,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643274523] [2023-08-30 05:17:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:58,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:17:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:17:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:17:58,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:17:58,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643274523] [2023-08-30 05:17:58,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643274523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:17:58,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:17:58,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:17:58,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47762440] [2023-08-30 05:17:58,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:17:58,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:17:58,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:17:58,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:17:58,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:17:58,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 453 [2023-08-30 05:17:58,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:17:58,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 453 [2023-08-30 05:17:58,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:17:58,339 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-08-30 05:17:58,339 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:17:58,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 223 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-08-30 05:17:58,340 INFO L137 encePairwiseOnDemand]: 451/453 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 05:17:58,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-08-30 05:17:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:17:58,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:17:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 555 transitions. [2023-08-30 05:17:58,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083885209713024 [2023-08-30 05:17:58,343 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 555 transitions. [2023-08-30 05:17:58,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 555 transitions. [2023-08-30 05:17:58,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:17:58,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 555 transitions. [2023-08-30 05:17:58,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,348 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 555 transitions. [2023-08-30 05:17:58,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-08-30 05:17:58,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:17:58,349 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-08-30 05:17:58,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-30 05:17:58,350 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-30 05:17:58,350 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-08-30 05:17:58,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:58,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:17:58,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:17:58,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:58,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:58,352 INFO L85 PathProgramCache]: Analyzing trace with hash -567507650, now seen corresponding path program 1 times [2023-08-30 05:17:58,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:58,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381543956] [2023-08-30 05:17:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:17:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:17:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:17:58,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:17:58,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381543956] [2023-08-30 05:17:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381543956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:17:58,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:17:58,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:17:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337541864] [2023-08-30 05:17:58,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:17:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:17:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:17:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:17:58,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:17:58,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 453 [2023-08-30 05:17:58,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:17:58,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 453 [2023-08-30 05:17:58,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:17:58,472 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-08-30 05:17:58,472 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:17:58,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-08-30 05:17:58,473 INFO L137 encePairwiseOnDemand]: 451/453 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 05:17:58,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-08-30 05:17:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:17:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:17:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-08-30 05:17:58,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275202354672553 [2023-08-30 05:17:58,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-08-30 05:17:58,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-08-30 05:17:58,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:17:58,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-08-30 05:17:58,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 453.0) internal successors, (1812), 4 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,479 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 581 transitions. [2023-08-30 05:17:58,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-08-30 05:17:58,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:17:58,480 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-08-30 05:17:58,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-08-30 05:17:58,481 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-30 05:17:58,481 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-08-30 05:17:58,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:58,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:58,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:17:58,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:17:58,482 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:58,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:58,482 INFO L85 PathProgramCache]: Analyzing trace with hash -468506199, now seen corresponding path program 1 times [2023-08-30 05:17:58,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:58,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157311857] [2023-08-30 05:17:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:17:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:17:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:17:58,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:17:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157311857] [2023-08-30 05:17:58,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157311857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:17:58,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:17:58,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:17:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005185072] [2023-08-30 05:17:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:17:58,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:17:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:17:58,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:17:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:17:59,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 453 [2023-08-30 05:17:59,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:17:59,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 453 [2023-08-30 05:17:59,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:17:59,168 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2023-08-30 05:17:59,168 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:17:59,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 1 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-08-30 05:17:59,169 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 30 selfloop transitions, 5 changer transitions 9/44 dead transitions. [2023-08-30 05:17:59,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 199 flow [2023-08-30 05:17:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:17:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:17:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1101 transitions. [2023-08-30 05:17:59,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40507726269315675 [2023-08-30 05:17:59,171 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1101 transitions. [2023-08-30 05:17:59,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1101 transitions. [2023-08-30 05:17:59,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:17:59,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1101 transitions. [2023-08-30 05:17:59,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,176 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,176 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1101 transitions. [2023-08-30 05:17:59,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 199 flow [2023-08-30 05:17:59,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:17:59,177 INFO L231 Difference]: Finished difference. Result has 34 places, 18 transitions, 63 flow [2023-08-30 05:17:59,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=63, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2023-08-30 05:17:59,177 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 05:17:59,178 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 63 flow [2023-08-30 05:17:59,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:59,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:17:59,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:17:59,178 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:59,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:59,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1692428671, now seen corresponding path program 2 times [2023-08-30 05:17:59,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:59,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850926592] [2023-08-30 05:17:59,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:59,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:17:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:17:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:17:59,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:17:59,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850926592] [2023-08-30 05:17:59,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850926592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:17:59,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:17:59,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:17:59,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095284370] [2023-08-30 05:17:59,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:17:59,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:17:59,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:17:59,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:17:59,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:17:59,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 453 [2023-08-30 05:17:59,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:17:59,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 453 [2023-08-30 05:17:59,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:17:59,980 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2023-08-30 05:17:59,981 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 05:17:59,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 114 events. 36/114 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 404 event pairs, 2 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 294. Up to 45 conditions per place. [2023-08-30 05:17:59,982 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 32 selfloop transitions, 6 changer transitions 9/47 dead transitions. [2023-08-30 05:17:59,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 241 flow [2023-08-30 05:17:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:17:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:17:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1096 transitions. [2023-08-30 05:17:59,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032376747608536 [2023-08-30 05:17:59,985 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1096 transitions. [2023-08-30 05:17:59,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1096 transitions. [2023-08-30 05:17:59,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:17:59,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1096 transitions. [2023-08-30 05:17:59,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,993 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,993 INFO L175 Difference]: Start difference. First operand has 34 places, 18 transitions, 63 flow. Second operand 6 states and 1096 transitions. [2023-08-30 05:17:59,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 241 flow [2023-08-30 05:17:59,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 237 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 05:17:59,995 INFO L231 Difference]: Finished difference. Result has 41 places, 21 transitions, 101 flow [2023-08-30 05:17:59,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=21} [2023-08-30 05:17:59,996 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-30 05:17:59,996 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 21 transitions, 101 flow [2023-08-30 05:17:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:17:59,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:17:59,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:17:59,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:17:59,998 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:17:59,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:17:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash 171273151, now seen corresponding path program 3 times [2023-08-30 05:17:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:17:59,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836936469] [2023-08-30 05:17:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:17:59,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:00,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836936469] [2023-08-30 05:18:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836936469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:00,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:00,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:18:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834885187] [2023-08-30 05:18:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:00,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:00,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 453 [2023-08-30 05:18:00,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 21 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:00,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:00,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 453 [2023-08-30 05:18:00,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:00,659 INFO L130 PetriNetUnfolder]: 32/98 cut-off events. [2023-08-30 05:18:00,659 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-08-30 05:18:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 98 events. 32/98 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 305 event pairs, 2 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 312. Up to 46 conditions per place. [2023-08-30 05:18:00,660 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-08-30 05:18:00,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 256 flow [2023-08-30 05:18:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:18:00,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:18:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1094 transitions. [2023-08-30 05:18:00,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025018395879323 [2023-08-30 05:18:00,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1094 transitions. [2023-08-30 05:18:00,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1094 transitions. [2023-08-30 05:18:00,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:00,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1094 transitions. [2023-08-30 05:18:00,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:00,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:00,672 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:00,672 INFO L175 Difference]: Start difference. First operand has 41 places, 21 transitions, 101 flow. Second operand 6 states and 1094 transitions. [2023-08-30 05:18:00,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 256 flow [2023-08-30 05:18:00,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 245 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 05:18:00,674 INFO L231 Difference]: Finished difference. Result has 45 places, 20 transitions, 108 flow [2023-08-30 05:18:00,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=20} [2023-08-30 05:18:00,675 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-30 05:18:00,675 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 20 transitions, 108 flow [2023-08-30 05:18:00,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:00,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:00,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:00,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:18:00,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:18:00,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash 235026315, now seen corresponding path program 4 times [2023-08-30 05:18:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:00,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115003289] [2023-08-30 05:18:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:00,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115003289] [2023-08-30 05:18:01,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115003289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:01,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:01,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:18:01,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567509812] [2023-08-30 05:18:01,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:01,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:01,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:01,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 453 [2023-08-30 05:18:01,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 20 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:01,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 453 [2023-08-30 05:18:01,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:01,384 INFO L130 PetriNetUnfolder]: 16/54 cut-off events. [2023-08-30 05:18:01,384 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-30 05:18:01,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 54 events. 16/54 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 0 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 199. Up to 20 conditions per place. [2023-08-30 05:18:01,385 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 18 selfloop transitions, 5 changer transitions 10/33 dead transitions. [2023-08-30 05:18:01,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 33 transitions, 205 flow [2023-08-30 05:18:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:18:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:18:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1071 transitions. [2023-08-30 05:18:01,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39403973509933776 [2023-08-30 05:18:01,387 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1071 transitions. [2023-08-30 05:18:01,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1071 transitions. [2023-08-30 05:18:01,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:01,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1071 transitions. [2023-08-30 05:18:01,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,392 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,392 INFO L175 Difference]: Start difference. First operand has 45 places, 20 transitions, 108 flow. Second operand 6 states and 1071 transitions. [2023-08-30 05:18:01,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 33 transitions, 205 flow [2023-08-30 05:18:01,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 184 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 05:18:01,393 INFO L231 Difference]: Finished difference. Result has 43 places, 18 transitions, 84 flow [2023-08-30 05:18:01,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=18} [2023-08-30 05:18:01,394 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-30 05:18:01,394 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 18 transitions, 84 flow [2023-08-30 05:18:01,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:01,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:01,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 05:18:01,395 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:18:01,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1893875903, now seen corresponding path program 5 times [2023-08-30 05:18:01,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:01,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251190927] [2023-08-30 05:18:01,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:01,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:01,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251190927] [2023-08-30 05:18:01,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251190927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:01,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:01,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:18:01,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486893370] [2023-08-30 05:18:01,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:01,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:01,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:01,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:01,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:01,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 453 [2023-08-30 05:18:01,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 18 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:01,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 453 [2023-08-30 05:18:01,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:01,823 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-30 05:18:01,824 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-30 05:18:01,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 40 events. 8/40 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 139. Up to 19 conditions per place. [2023-08-30 05:18:01,824 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-30 05:18:01,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 180 flow [2023-08-30 05:18:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:18:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:18:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1087 transitions. [2023-08-30 05:18:01,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3999264164827079 [2023-08-30 05:18:01,826 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1087 transitions. [2023-08-30 05:18:01,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1087 transitions. [2023-08-30 05:18:01,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:01,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1087 transitions. [2023-08-30 05:18:01,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.16666666666666) internal successors, (1087), 6 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,831 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,831 INFO L175 Difference]: Start difference. First operand has 43 places, 18 transitions, 84 flow. Second operand 6 states and 1087 transitions. [2023-08-30 05:18:01,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 180 flow [2023-08-30 05:18:01,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 150 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-08-30 05:18:01,832 INFO L231 Difference]: Finished difference. Result has 40 places, 16 transitions, 62 flow [2023-08-30 05:18:01,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=62, PETRI_PLACES=40, PETRI_TRANSITIONS=16} [2023-08-30 05:18:01,833 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-30 05:18:01,833 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 16 transitions, 62 flow [2023-08-30 05:18:01,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.2) internal successors, (896), 5 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:01,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:01,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:01,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 05:18:01,834 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:18:01,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:01,834 INFO L85 PathProgramCache]: Analyzing trace with hash 231223215, now seen corresponding path program 6 times [2023-08-30 05:18:01,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:01,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655997347] [2023-08-30 05:18:01,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:01,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:02,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:02,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655997347] [2023-08-30 05:18:02,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655997347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:02,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:02,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:18:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987750892] [2023-08-30 05:18:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:02,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:02,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:02,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 453 [2023-08-30 05:18:02,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 16 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:02,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:02,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 453 [2023-08-30 05:18:02,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:02,252 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-30 05:18:02,253 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 05:18:02,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 68. Up to 8 conditions per place. [2023-08-30 05:18:02,253 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-30 05:18:02,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 18 transitions, 100 flow [2023-08-30 05:18:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:18:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:18:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2023-08-30 05:18:02,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39330389992641646 [2023-08-30 05:18:02,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1069 transitions. [2023-08-30 05:18:02,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1069 transitions. [2023-08-30 05:18:02,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:02,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1069 transitions. [2023-08-30 05:18:02,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:02,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:02,266 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:02,266 INFO L175 Difference]: Start difference. First operand has 40 places, 16 transitions, 62 flow. Second operand 6 states and 1069 transitions. [2023-08-30 05:18:02,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 18 transitions, 100 flow [2023-08-30 05:18:02,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 18 transitions, 88 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 05:18:02,267 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-30 05:18:02,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-30 05:18:02,268 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-08-30 05:18:02,268 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-30 05:18:02,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 178.2) internal successors, (891), 5 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:02,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-30 05:18:02,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-30 05:18:02,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-30 05:18:02,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-30 05:18:02,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-30 05:18:02,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-30 05:18:02,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-30 05:18:02,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-30 05:18:02,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-08-30 05:18:02,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-30 05:18:02,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-30 05:18:02,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-30 05:18:02,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-08-30 05:18:02,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-08-30 05:18:02,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-08-30 05:18:02,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-08-30 05:18:02,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-08-30 05:18:02,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 05:18:02,273 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:02,275 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 05:18:02,275 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 05:18:02,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:18:02 BasicIcfg [2023-08-30 05:18:02,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 05:18:02,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 05:18:02,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 05:18:02,278 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 05:18:02,278 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:17:51" (3/4) ... [2023-08-30 05:18:02,280 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 05:18:02,284 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 05:18:02,284 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 05:18:02,284 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 05:18:02,287 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-30 05:18:02,287 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 05:18:02,287 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 05:18:02,287 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 05:18:02,314 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 05:18:02,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 05:18:02,315 INFO L158 Benchmark]: Toolchain (without parser) took 11671.63ms. Allocated memory was 73.4MB in the beginning and 251.7MB in the end (delta: 178.3MB). Free memory was 50.9MB in the beginning and 217.6MB in the end (delta: -166.7MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2023-08-30 05:18:02,315 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:18:02,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.13ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 39.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 05:18:02,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.93ms. Allocated memory is still 73.4MB. Free memory was 39.3MB in the beginning and 37.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:18:02,316 INFO L158 Benchmark]: Boogie Preprocessor took 34.04ms. Allocated memory is still 73.4MB. Free memory was 37.3MB in the beginning and 35.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:18:02,316 INFO L158 Benchmark]: RCFGBuilder took 454.98ms. Allocated memory is still 73.4MB. Free memory was 35.8MB in the beginning and 36.3MB in the end (delta: -517.4kB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-08-30 05:18:02,316 INFO L158 Benchmark]: TraceAbstraction took 10856.97ms. Allocated memory was 73.4MB in the beginning and 251.7MB in the end (delta: 178.3MB). Free memory was 35.7MB in the beginning and 220.8MB in the end (delta: -185.0MB). Peak memory consumption was 138.4MB. Max. memory is 16.1GB. [2023-08-30 05:18:02,317 INFO L158 Benchmark]: Witness Printer took 37.27ms. Allocated memory is still 251.7MB. Free memory was 220.8MB in the beginning and 217.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:18:02,318 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 60.8MB. Free memory is still 38.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.13ms. Allocated memory is still 73.4MB. Free memory was 50.7MB in the beginning and 39.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.93ms. Allocated memory is still 73.4MB. Free memory was 39.3MB in the beginning and 37.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.04ms. Allocated memory is still 73.4MB. Free memory was 37.3MB in the beginning and 35.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 454.98ms. Allocated memory is still 73.4MB. Free memory was 35.8MB in the beginning and 36.3MB in the end (delta: -517.4kB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10856.97ms. Allocated memory was 73.4MB in the beginning and 251.7MB in the end (delta: 178.3MB). Free memory was 35.7MB in the beginning and 220.8MB in the end (delta: -185.0MB). Peak memory consumption was 138.4MB. Max. memory is 16.1GB. * Witness Printer took 37.27ms. Allocated memory is still 251.7MB. Free memory was 220.8MB in the beginning and 217.6MB 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: 5.4s, 201 PlacesBefore, 39 PlacesAfterwards, 204 TransitionsBefore, 29 TransitionsAfterwards, 10608 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 42 ConcurrentYvCompositions, 13 ChoiceCompositions, 242 TotalNumberOfCompositions, 10225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10225, independent: 10225, independent conditional: 0, independent unconditional: 10225, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6564, independent: 6564, independent conditional: 0, independent unconditional: 6564, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10225, independent: 3661, independent conditional: 0, independent unconditional: 3661, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 6564, unknown conditional: 0, unknown unconditional: 6564] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 80]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 60]: 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 7 procedures, 295 locations, 17 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: 10.7s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1378 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 805 mSDsluCounter, 492 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 315 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1771 IncrementalHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 177 mSDtfsCounter, 1771 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 1274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 05:18:02,362 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