./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --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 07:56:22,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:56:22,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:56:22,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:56:22,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:56:22,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:56:22,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:56:22,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:56:22,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:56:22,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:56:22,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:56:22,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:56:22,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:56:22,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:56:22,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:56:22,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:56:22,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:56:22,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:56:22,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:56:22,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:56:22,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:56:22,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:56:22,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:56:22,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:56:22,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:56:22,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:56:22,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:56:22,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:56:22,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:56:22,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:56:22,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:56:22,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:56:22,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:56:22,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:56:22,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:56:22,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:56:22,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:56:22,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:56:22,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:56:22,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:56:22,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:56:22,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 07:56:22,236 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:56:22,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:56:22,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:56:22,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:56:22,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:56:22,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:56:22,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:56:22,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:56:22,239 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:56:22,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:56:22,240 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:56:22,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:56:22,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:56:22,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:56:22,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:56:22,241 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:56:22,242 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:56:22,242 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:56:22,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:56:22,242 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:56:22,242 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:56:22,243 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:56:22,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:56:22,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:56:22,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:56:22,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:56:22,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:56:22,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:56:22,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 07:56:22,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 07:56:22,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:56:22,245 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:56:22,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:56:22,245 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:56:22,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:56:22,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:56:22,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:56:22,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:56:22,566 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:56:22,566 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:56:22,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-30 07:56:23,709 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:56:23,982 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:56:23,986 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-30 07:56:24,008 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4323943/7ff98a79930d40c2a0c1a0358cbd086a/FLAG2098940b5 [2023-08-30 07:56:24,020 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4323943/7ff98a79930d40c2a0c1a0358cbd086a [2023-08-30 07:56:24,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:56:24,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:56:24,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:56:24,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:56:24,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:56:24,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0c4cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24, skipping insertion in model container [2023-08-30 07:56:24,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:56:24,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:56:24,467 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-08-30 07:56:24,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:56:24,494 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 07:56:24,545 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2023-08-30 07:56:24,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:56:24,616 INFO L208 MainTranslator]: Completed translation [2023-08-30 07:56:24,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24 WrapperNode [2023-08-30 07:56:24,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:56:24,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 07:56:24,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 07:56:24,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 07:56:24,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,680 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-08-30 07:56:24,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 07:56:24,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 07:56:24,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 07:56:24,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 07:56:24,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,729 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 07:56:24,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 07:56:24,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 07:56:24,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 07:56:24,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (1/1) ... [2023-08-30 07:56:24,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:56:24,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:56:24,777 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 07:56:24,801 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 07:56:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 07:56:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 07:56:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-30 07:56:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 07:56:24,815 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 07:56:24,815 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 07:56:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 07:56:24,816 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 07:56:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 07:56:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 07:56:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 07:56:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 07:56:24,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 07:56:24,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 07:56:24,818 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 07:56:24,999 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 07:56:25,001 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 07:56:25,257 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 07:56:25,266 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 07:56:25,268 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 07:56:25,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:56:25 BoogieIcfgContainer [2023-08-30 07:56:25,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 07:56:25,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 07:56:25,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 07:56:25,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 07:56:25,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:56:24" (1/3) ... [2023-08-30 07:56:25,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af0b4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:56:25, skipping insertion in model container [2023-08-30 07:56:25,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:24" (2/3) ... [2023-08-30 07:56:25,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af0b4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:56:25, skipping insertion in model container [2023-08-30 07:56:25,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:56:25" (3/3) ... [2023-08-30 07:56:25,279 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-08-30 07:56:25,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 07:56:25,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 07:56:25,295 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 07:56:25,355 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 07:56:25,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 143 transitions, 302 flow [2023-08-30 07:56:25,452 INFO L130 PetriNetUnfolder]: 10/141 cut-off events. [2023-08-30 07:56:25,454 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:56:25,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 141 events. 10/141 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-08-30 07:56:25,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 143 transitions, 302 flow [2023-08-30 07:56:25,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 137 transitions, 286 flow [2023-08-30 07:56:25,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 07:56:25,481 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 137 transitions, 286 flow [2023-08-30 07:56:25,484 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 137 transitions, 286 flow [2023-08-30 07:56:25,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 137 transitions, 286 flow [2023-08-30 07:56:25,527 INFO L130 PetriNetUnfolder]: 10/137 cut-off events. [2023-08-30 07:56:25,527 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:56:25,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 10/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-08-30 07:56:25,530 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314 [2023-08-30 07:56:31,964 INFO L134 LiptonReduction]: Checked pairs total: 5425 [2023-08-30 07:56:31,964 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-30 07:56:31,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 07:56:31,983 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;@34139f13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 07:56:31,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 07:56:31,985 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 07:56:31,986 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:56:31,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:31,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 07:56:31,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:31,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:31,991 INFO L85 PathProgramCache]: Analyzing trace with hash 544, now seen corresponding path program 1 times [2023-08-30 07:56:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:32,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118258097] [2023-08-30 07:56:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:32,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:32,109 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 07:56:32,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:32,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118258097] [2023-08-30 07:56:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118258097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:32,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:56:32,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 07:56:32,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070594359] [2023-08-30 07:56:32,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:32,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 07:56:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 07:56:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 07:56:32,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 273 [2023-08-30 07:56:32,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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 07:56:32,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:32,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 273 [2023-08-30 07:56:32,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:32,288 INFO L130 PetriNetUnfolder]: 264/513 cut-off events. [2023-08-30 07:56:32,288 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 07:56:32,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 513 events. 264/513 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2440 event pairs, 168 based on Foata normal form. 24/383 useless extension candidates. Maximal degree in co-relation 833. Up to 409 conditions per place. [2023-08-30 07:56:32,296 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-30 07:56:32,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 142 flow [2023-08-30 07:56:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 07:56:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 07:56:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 297 transitions. [2023-08-30 07:56:32,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439560439560439 [2023-08-30 07:56:32,316 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 297 transitions. [2023-08-30 07:56:32,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 297 transitions. [2023-08-30 07:56:32,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:32,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 297 transitions. [2023-08-30 07:56:32,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 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 07:56:32,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 07:56:32,331 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 07:56:32,333 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 92 flow. Second operand 2 states and 297 transitions. [2023-08-30 07:56:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 142 flow [2023-08-30 07:56:32,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 07:56:32,337 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 78 flow [2023-08-30 07:56:32,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-30 07:56:32,343 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-30 07:56:32,343 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 78 flow [2023-08-30 07:56:32,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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 07:56:32,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:32,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:56:32,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 07:56:32,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:32,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:32,346 INFO L85 PathProgramCache]: Analyzing trace with hash 533161, now seen corresponding path program 1 times [2023-08-30 07:56:32,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:32,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930811176] [2023-08-30 07:56:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:32,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:32,585 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 07:56:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930811176] [2023-08-30 07:56:32,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930811176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:32,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:56:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:56:32,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668674828] [2023-08-30 07:56:32,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:32,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:56:32,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:32,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:56:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:56:32,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 07:56:32,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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 07:56:32,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:32,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 07:56:32,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:32,730 INFO L130 PetriNetUnfolder]: 252/486 cut-off events. [2023-08-30 07:56:32,730 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 07:56:32,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 486 events. 252/486 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2277 event pairs, 160 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 878. Up to 385 conditions per place. [2023-08-30 07:56:32,734 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-30 07:56:32,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 126 flow [2023-08-30 07:56:32,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:56:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:56:32,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-30 07:56:32,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884004884004884 [2023-08-30 07:56:32,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-30 07:56:32,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-30 07:56:32,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:32,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-30 07:56:32,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 07:56:32,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:32,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:32,743 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 78 flow. Second operand 3 states and 400 transitions. [2023-08-30 07:56:32,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 126 flow [2023-08-30 07:56:32,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 07:56:32,744 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 78 flow [2023-08-30 07:56:32,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-08-30 07:56:32,745 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-30 07:56:32,746 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 78 flow [2023-08-30 07:56:32,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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 07:56:32,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:32,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:56:32,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 07:56:32,747 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:32,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash 533162, now seen corresponding path program 1 times [2023-08-30 07:56:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:32,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454898626] [2023-08-30 07:56:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:32,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:32,887 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 07:56:32,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:32,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454898626] [2023-08-30 07:56:32,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454898626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:32,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:56:32,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:56:32,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5987558] [2023-08-30 07:56:32,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:32,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:56:32,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:32,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:56:32,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:56:32,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 273 [2023-08-30 07:56:32,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 07:56:32,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:32,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 273 [2023-08-30 07:56:32,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:32,991 INFO L130 PetriNetUnfolder]: 240/459 cut-off events. [2023-08-30 07:56:32,992 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 07:56:32,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 459 events. 240/459 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2102 event pairs, 152 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 831. Up to 363 conditions per place. [2023-08-30 07:56:32,996 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-30 07:56:32,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 122 flow [2023-08-30 07:56:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:56:32,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:56:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-30 07:56:32,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006105006105006 [2023-08-30 07:56:32,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-30 07:56:32,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-30 07:56:32,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:32,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-30 07:56:33,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 07:56:33,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,002 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,002 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 78 flow. Second operand 3 states and 410 transitions. [2023-08-30 07:56:33,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 122 flow [2023-08-30 07:56:33,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:56:33,004 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2023-08-30 07:56:33,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-30 07:56:33,005 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-08-30 07:56:33,006 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2023-08-30 07:56:33,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 07:56:33,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:33,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:56:33,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 07:56:33,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:33,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:33,007 INFO L85 PathProgramCache]: Analyzing trace with hash 512378966, now seen corresponding path program 1 times [2023-08-30 07:56:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388081845] [2023-08-30 07:56:33,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:33,193 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 07:56:33,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:33,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388081845] [2023-08-30 07:56:33,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388081845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:33,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:56:33,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:56:33,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731030516] [2023-08-30 07:56:33,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:33,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:56:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:33,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:56:33,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:56:33,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273 [2023-08-30 07:56:33,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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 07:56:33,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:33,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273 [2023-08-30 07:56:33,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:33,317 INFO L130 PetriNetUnfolder]: 180/354 cut-off events. [2023-08-30 07:56:33,317 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 07:56:33,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 354 events. 180/354 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1531 event pairs, 112 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 641. Up to 278 conditions per place. [2023-08-30 07:56:33,321 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-30 07:56:33,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 118 flow [2023-08-30 07:56:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:56:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:56:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-08-30 07:56:33,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2023-08-30 07:56:33,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-08-30 07:56:33,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-08-30 07:56:33,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:33,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-08-30 07:56:33,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 07:56:33,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,331 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 3 states and 402 transitions. [2023-08-30 07:56:33,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 118 flow [2023-08-30 07:56:33,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:56:33,334 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow [2023-08-30 07:56:33,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 07:56:33,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 07:56:33,336 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow [2023-08-30 07:56:33,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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 07:56:33,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:33,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:56:33,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 07:56:33,337 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:33,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash 512378967, now seen corresponding path program 1 times [2023-08-30 07:56:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300907810] [2023-08-30 07:56:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:33,430 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 07:56:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300907810] [2023-08-30 07:56:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300907810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:33,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:56:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:56:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648014549] [2023-08-30 07:56:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:33,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:56:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:33,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:56:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:56:33,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 273 [2023-08-30 07:56:33,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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 07:56:33,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:33,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 273 [2023-08-30 07:56:33,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:33,520 INFO L130 PetriNetUnfolder]: 120/249 cut-off events. [2023-08-30 07:56:33,520 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 07:56:33,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 249 events. 120/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 992 event pairs, 72 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 451. Up to 193 conditions per place. [2023-08-30 07:56:33,521 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-30 07:56:33,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 114 flow [2023-08-30 07:56:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:56:33,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:56:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-08-30 07:56:33,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46764346764346765 [2023-08-30 07:56:33,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-08-30 07:56:33,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-08-30 07:56:33,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:33,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-08-30 07:56:33,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 07:56:33,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,528 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 383 transitions. [2023-08-30 07:56:33,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 114 flow [2023-08-30 07:56:33,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:56:33,529 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 70 flow [2023-08-30 07:56:33,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-30 07:56:33,531 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-30 07:56:33,531 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 70 flow [2023-08-30 07:56:33,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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 07:56:33,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:33,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:33,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 07:56:33,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:33,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:33,534 INFO L85 PathProgramCache]: Analyzing trace with hash -261057374, now seen corresponding path program 1 times [2023-08-30 07:56:33,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:33,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102128542] [2023-08-30 07:56:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:33,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:33,592 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 07:56:33,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:33,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102128542] [2023-08-30 07:56:33,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102128542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:33,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:56:33,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 07:56:33,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213292224] [2023-08-30 07:56:33,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:33,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:56:33,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:56:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:56:33,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 273 [2023-08-30 07:56:33,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 07:56:33,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:33,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 273 [2023-08-30 07:56:33,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:33,675 INFO L130 PetriNetUnfolder]: 189/435 cut-off events. [2023-08-30 07:56:33,675 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:56:33,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 435 events. 189/435 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2003 event pairs, 72 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 745. Up to 195 conditions per place. [2023-08-30 07:56:33,677 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 33 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 07:56:33,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 167 flow [2023-08-30 07:56:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:56:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:56:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-30 07:56:33,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2023-08-30 07:56:33,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-30 07:56:33,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-30 07:56:33,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:33,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-30 07:56:33,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 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 07:56:33,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,684 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 70 flow. Second operand 3 states and 423 transitions. [2023-08-30 07:56:33,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 167 flow [2023-08-30 07:56:33,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:56:33,685 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 78 flow [2023-08-30 07:56:33,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 07:56:33,689 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 07:56:33,689 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 78 flow [2023-08-30 07:56:33,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 07:56:33,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:33,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:33,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 07:56:33,692 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:33,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:33,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1965737995, now seen corresponding path program 1 times [2023-08-30 07:56:33,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:33,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989225847] [2023-08-30 07:56:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:33,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:56:33,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:33,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989225847] [2023-08-30 07:56:33,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989225847] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:33,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:56:33,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 07:56:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688628618] [2023-08-30 07:56:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:33,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:56:33,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:56:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:56:33,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 273 [2023-08-30 07:56:33,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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 07:56:33,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:33,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 273 [2023-08-30 07:56:33,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:33,863 INFO L130 PetriNetUnfolder]: 297/642 cut-off events. [2023-08-30 07:56:33,863 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 07:56:33,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 642 events. 297/642 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3077 event pairs, 117 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 1202. Up to 300 conditions per place. [2023-08-30 07:56:33,867 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 35 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-30 07:56:33,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 191 flow [2023-08-30 07:56:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:56:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:56:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-30 07:56:33,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2023-08-30 07:56:33,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-30 07:56:33,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-30 07:56:33,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:33,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-30 07:56:33,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 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 07:56:33,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:33,872 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 78 flow. Second operand 3 states and 423 transitions. [2023-08-30 07:56:33,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 191 flow [2023-08-30 07:56:33,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:56:33,875 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow [2023-08-30 07:56:33,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-08-30 07:56:33,875 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-08-30 07:56:33,876 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 88 flow [2023-08-30 07:56:33,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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 07:56:33,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:33,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:33,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 07:56:33,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:33,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:33,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1443448180, now seen corresponding path program 1 times [2023-08-30 07:56:33,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:33,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541074263] [2023-08-30 07:56:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:33,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:56:33,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541074263] [2023-08-30 07:56:33,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541074263] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:56:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439965126] [2023-08-30 07:56:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:33,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:56:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:56:33,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 07:56:33,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 07:56:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:34,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 07:56:34,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:56:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:56:34,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:56:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:56:34,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439965126] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:56:34,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:56:34,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-08-30 07:56:34,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963765129] [2023-08-30 07:56:34,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:56:34,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 07:56:34,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:34,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 07:56:34,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 07:56:34,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273 [2023-08-30 07:56:34,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 128.75) internal successors, (1030), 8 states have internal predecessors, (1030), 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 07:56:34,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:34,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273 [2023-08-30 07:56:34,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:34,590 INFO L130 PetriNetUnfolder]: 740/1644 cut-off events. [2023-08-30 07:56:34,590 INFO L131 PetriNetUnfolder]: For 327/327 co-relation queries the response was YES. [2023-08-30 07:56:34,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 1644 events. 740/1644 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 9046 event pairs, 42 based on Foata normal form. 104/1693 useless extension candidates. Maximal degree in co-relation 3110. Up to 216 conditions per place. [2023-08-30 07:56:34,599 INFO L137 encePairwiseOnDemand]: 266/273 looper letters, 130 selfloop transitions, 33 changer transitions 0/172 dead transitions. [2023-08-30 07:56:34,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 172 transitions, 772 flow [2023-08-30 07:56:34,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 07:56:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 07:56:34,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2161 transitions. [2023-08-30 07:56:34,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473443223443225 [2023-08-30 07:56:34,604 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2161 transitions. [2023-08-30 07:56:34,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2161 transitions. [2023-08-30 07:56:34,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:34,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2161 transitions. [2023-08-30 07:56:34,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 135.0625) internal successors, (2161), 16 states have internal predecessors, (2161), 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 07:56:34,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 273.0) internal successors, (4641), 17 states have internal predecessors, (4641), 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 07:56:34,616 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 273.0) internal successors, (4641), 17 states have internal predecessors, (4641), 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 07:56:34,617 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 88 flow. Second operand 16 states and 2161 transitions. [2023-08-30 07:56:34,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 172 transitions, 772 flow [2023-08-30 07:56:34,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 172 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:56:34,620 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 360 flow [2023-08-30 07:56:34,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=360, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-30 07:56:34,621 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-30 07:56:34,621 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 360 flow [2023-08-30 07:56:34,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 128.75) internal successors, (1030), 8 states have internal predecessors, (1030), 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 07:56:34,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:34,622 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:34,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 07:56:34,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:56:34,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:34,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:34,829 INFO L85 PathProgramCache]: Analyzing trace with hash -870269941, now seen corresponding path program 1 times [2023-08-30 07:56:34,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:34,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584384083] [2023-08-30 07:56:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:34,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-08-30 07:56:34,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:34,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584384083] [2023-08-30 07:56:34,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584384083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:56:34,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767233025] [2023-08-30 07:56:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:34,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:56:34,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:56:34,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 07:56:34,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 07:56:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:35,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:56:35,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:56:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-08-30 07:56:35,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:56:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767233025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 07:56:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-30 07:56:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539494509] [2023-08-30 07:56:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:35,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:56:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:35,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:56:35,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:56:35,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 273 [2023-08-30 07:56:35,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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 07:56:35,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:35,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 273 [2023-08-30 07:56:35,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:35,883 INFO L130 PetriNetUnfolder]: 3568/6201 cut-off events. [2023-08-30 07:56:35,883 INFO L131 PetriNetUnfolder]: For 9535/9535 co-relation queries the response was YES. [2023-08-30 07:56:35,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16519 conditions, 6201 events. 3568/6201 cut-off events. For 9535/9535 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 35263 event pairs, 677 based on Foata normal form. 0/5685 useless extension candidates. Maximal degree in co-relation 16501. Up to 2296 conditions per place. [2023-08-30 07:56:35,926 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 172 selfloop transitions, 18 changer transitions 0/193 dead transitions. [2023-08-30 07:56:35,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 1526 flow [2023-08-30 07:56:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:56:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:56:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 964 transitions. [2023-08-30 07:56:35,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044479330193616 [2023-08-30 07:56:35,930 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 964 transitions. [2023-08-30 07:56:35,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 964 transitions. [2023-08-30 07:56:35,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:35,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 964 transitions. [2023-08-30 07:56:35,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 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 07:56:35,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 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 07:56:35,936 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 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 07:56:35,936 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 360 flow. Second operand 7 states and 964 transitions. [2023-08-30 07:56:35,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 1526 flow [2023-08-30 07:56:35,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 193 transitions, 1389 flow, removed 48 selfloop flow, removed 2 redundant places. [2023-08-30 07:56:35,985 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 456 flow [2023-08-30 07:56:35,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=456, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2023-08-30 07:56:35,986 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-30 07:56:35,986 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 456 flow [2023-08-30 07:56:35,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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 07:56:35,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:35,987 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:35,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 07:56:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-30 07:56:36,193 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:36,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:36,194 INFO L85 PathProgramCache]: Analyzing trace with hash 289477227, now seen corresponding path program 2 times [2023-08-30 07:56:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:36,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675756844] [2023-08-30 07:56:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:36,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-08-30 07:56:36,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:36,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675756844] [2023-08-30 07:56:36,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675756844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:36,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:56:36,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 07:56:36,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423170922] [2023-08-30 07:56:36,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:36,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:56:36,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:36,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:56:36,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:56:36,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 273 [2023-08-30 07:56:36,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 07:56:36,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:36,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 273 [2023-08-30 07:56:36,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:36,643 INFO L130 PetriNetUnfolder]: 1104/2464 cut-off events. [2023-08-30 07:56:36,643 INFO L131 PetriNetUnfolder]: For 6778/6778 co-relation queries the response was YES. [2023-08-30 07:56:36,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7926 conditions, 2464 events. 1104/2464 cut-off events. For 6778/6778 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 14594 event pairs, 229 based on Foata normal form. 280/2743 useless extension candidates. Maximal degree in co-relation 7902. Up to 1099 conditions per place. [2023-08-30 07:56:36,661 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 53 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-08-30 07:56:36,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 691 flow [2023-08-30 07:56:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:56:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:56:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-08-30 07:56:36,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49694749694749696 [2023-08-30 07:56:36,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-08-30 07:56:36,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-08-30 07:56:36,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:36,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-08-30 07:56:36,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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 07:56:36,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:36,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:36,667 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 456 flow. Second operand 3 states and 407 transitions. [2023-08-30 07:56:36,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 691 flow [2023-08-30 07:56:36,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 89 transitions, 673 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 07:56:36,708 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 423 flow [2023-08-30 07:56:36,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=423, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2023-08-30 07:56:36,709 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2023-08-30 07:56:36,709 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 423 flow [2023-08-30 07:56:36,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 07:56:36,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:36,710 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:36,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 07:56:36,710 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:36,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:36,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1523348383, now seen corresponding path program 3 times [2023-08-30 07:56:36,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:36,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060602025] [2023-08-30 07:56:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:36,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-08-30 07:56:36,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060602025] [2023-08-30 07:56:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060602025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:36,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:56:36,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:56:36,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398481588] [2023-08-30 07:56:36,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:36,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:56:36,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:56:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:56:36,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273 [2023-08-30 07:56:36,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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 07:56:36,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:36,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273 [2023-08-30 07:56:36,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:37,015 INFO L130 PetriNetUnfolder]: 805/1695 cut-off events. [2023-08-30 07:56:37,015 INFO L131 PetriNetUnfolder]: For 4923/4928 co-relation queries the response was YES. [2023-08-30 07:56:37,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6106 conditions, 1695 events. 805/1695 cut-off events. For 4923/4928 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8766 event pairs, 196 based on Foata normal form. 76/1765 useless extension candidates. Maximal degree in co-relation 6083. Up to 1131 conditions per place. [2023-08-30 07:56:37,025 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 68 selfloop transitions, 3 changer transitions 3/80 dead transitions. [2023-08-30 07:56:37,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 80 transitions, 635 flow [2023-08-30 07:56:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:56:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:56:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-30 07:56:37,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-30 07:56:37,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-30 07:56:37,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-30 07:56:37,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:37,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-30 07:56:37,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 07:56:37,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:37,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:37,031 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 423 flow. Second operand 3 states and 420 transitions. [2023-08-30 07:56:37,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 80 transitions, 635 flow [2023-08-30 07:56:37,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:56:37,041 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 366 flow [2023-08-30 07:56:37,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-08-30 07:56:37,041 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-30 07:56:37,042 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 366 flow [2023-08-30 07:56:37,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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 07:56:37,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:37,042 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:37,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 07:56:37,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:37,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:37,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1760954735, now seen corresponding path program 4 times [2023-08-30 07:56:37,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:37,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618456478] [2023-08-30 07:56:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:37,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 07:56:37,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:37,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618456478] [2023-08-30 07:56:37,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618456478] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:56:37,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472543360] [2023-08-30 07:56:37,137 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 07:56:37,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:56:37,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:56:37,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 07:56:37,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 07:56:37,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 07:56:37,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:56:37,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:56:37,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:56:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 07:56:37,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:56:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-30 07:56:37,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472543360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:56:37,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:56:37,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-08-30 07:56:37,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588340114] [2023-08-30 07:56:37,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:56:37,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:56:37,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:37,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:56:37,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:56:37,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 273 [2023-08-30 07:56:37,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 134.57142857142858) internal successors, (942), 7 states have internal predecessors, (942), 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 07:56:37,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:37,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 273 [2023-08-30 07:56:37,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:37,632 INFO L130 PetriNetUnfolder]: 847/2055 cut-off events. [2023-08-30 07:56:37,633 INFO L131 PetriNetUnfolder]: For 6015/6063 co-relation queries the response was YES. [2023-08-30 07:56:37,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 2055 events. 847/2055 cut-off events. For 6015/6063 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12044 event pairs, 128 based on Foata normal form. 138/2183 useless extension candidates. Maximal degree in co-relation 6562. Up to 338 conditions per place. [2023-08-30 07:56:37,646 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 78 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2023-08-30 07:56:37,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 106 transitions, 837 flow [2023-08-30 07:56:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 07:56:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 07:56:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 834 transitions. [2023-08-30 07:56:37,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091575091575091 [2023-08-30 07:56:37,649 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 834 transitions. [2023-08-30 07:56:37,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 834 transitions. [2023-08-30 07:56:37,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:37,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 834 transitions. [2023-08-30 07:56:37,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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 07:56:37,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 07:56:37,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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 07:56:37,654 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 366 flow. Second operand 6 states and 834 transitions. [2023-08-30 07:56:37,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 106 transitions, 837 flow [2023-08-30 07:56:37,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 106 transitions, 831 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:56:37,665 INFO L231 Difference]: Finished difference. Result has 79 places, 64 transitions, 421 flow [2023-08-30 07:56:37,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=79, PETRI_TRANSITIONS=64} [2023-08-30 07:56:37,666 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-08-30 07:56:37,666 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 64 transitions, 421 flow [2023-08-30 07:56:37,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.57142857142858) internal successors, (942), 7 states have internal predecessors, (942), 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 07:56:37,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:37,667 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:37,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 07:56:37,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:56:37,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:37,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1029704693, now seen corresponding path program 5 times [2023-08-30 07:56:37,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:37,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933111836] [2023-08-30 07:56:37,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:37,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 07:56:38,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:38,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933111836] [2023-08-30 07:56:38,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933111836] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:56:38,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245670195] [2023-08-30 07:56:38,071 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 07:56:38,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:56:38,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:56:38,072 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 07:56:38,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 07:56:38,205 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-30 07:56:38,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:56:38,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 07:56:38,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:56:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-30 07:56:38,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:56:38,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245670195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:38,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 07:56:38,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2023-08-30 07:56:38,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532808932] [2023-08-30 07:56:38,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:38,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 07:56:38,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:38,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 07:56:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:56:38,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 273 [2023-08-30 07:56:38,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 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 07:56:38,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:38,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 273 [2023-08-30 07:56:38,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:38,671 INFO L130 PetriNetUnfolder]: 1058/2129 cut-off events. [2023-08-30 07:56:38,671 INFO L131 PetriNetUnfolder]: For 8933/8933 co-relation queries the response was YES. [2023-08-30 07:56:38,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8017 conditions, 2129 events. 1058/2129 cut-off events. For 8933/8933 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 10240 event pairs, 266 based on Foata normal form. 46/2173 useless extension candidates. Maximal degree in co-relation 7991. Up to 830 conditions per place. [2023-08-30 07:56:38,691 INFO L137 encePairwiseOnDemand]: 262/273 looper letters, 104 selfloop transitions, 23 changer transitions 0/129 dead transitions. [2023-08-30 07:56:38,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 1194 flow [2023-08-30 07:56:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 07:56:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 07:56:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1037 transitions. [2023-08-30 07:56:38,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748168498168498 [2023-08-30 07:56:38,695 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1037 transitions. [2023-08-30 07:56:38,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1037 transitions. [2023-08-30 07:56:38,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:38,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1037 transitions. [2023-08-30 07:56:38,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 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 07:56:38,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 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 07:56:38,702 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 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 07:56:38,702 INFO L175 Difference]: Start difference. First operand has 79 places, 64 transitions, 421 flow. Second operand 8 states and 1037 transitions. [2023-08-30 07:56:38,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 1194 flow [2023-08-30 07:56:38,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 1129 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 07:56:38,722 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 486 flow [2023-08-30 07:56:38,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=486, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2023-08-30 07:56:38,724 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-08-30 07:56:38,724 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 486 flow [2023-08-30 07:56:38,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 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 07:56:38,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:38,725 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:38,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 07:56:38,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:56:38,932 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:38,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:38,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1893577055, now seen corresponding path program 6 times [2023-08-30 07:56:38,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:38,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967238726] [2023-08-30 07:56:38,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:38,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-30 07:56:39,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967238726] [2023-08-30 07:56:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967238726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:56:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689709704] [2023-08-30 07:56:39,198 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 07:56:39,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:56:39,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:56:39,200 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 07:56:39,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 07:56:39,326 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 07:56:39,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:56:39,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 07:56:39,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:56:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-08-30 07:56:39,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:56:39,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689709704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:56:39,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 07:56:39,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 07:56:39,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618056436] [2023-08-30 07:56:39,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:56:39,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:56:39,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:39,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:56:39,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:56:39,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 273 [2023-08-30 07:56:39,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 07:56:39,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:39,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 273 [2023-08-30 07:56:39,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:40,133 INFO L130 PetriNetUnfolder]: 717/1699 cut-off events. [2023-08-30 07:56:40,133 INFO L131 PetriNetUnfolder]: For 6410/6452 co-relation queries the response was YES. [2023-08-30 07:56:40,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6620 conditions, 1699 events. 717/1699 cut-off events. For 6410/6452 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8924 event pairs, 441 based on Foata normal form. 2/1680 useless extension candidates. Maximal degree in co-relation 6591. Up to 1210 conditions per place. [2023-08-30 07:56:40,149 INFO L137 encePairwiseOnDemand]: 271/273 looper letters, 49 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-08-30 07:56:40,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 65 transitions, 584 flow [2023-08-30 07:56:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:56:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:56:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-08-30 07:56:40,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47374847374847373 [2023-08-30 07:56:40,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-08-30 07:56:40,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-08-30 07:56:40,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:40,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-08-30 07:56:40,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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 07:56:40,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:40,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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 07:56:40,155 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 486 flow. Second operand 3 states and 388 transitions. [2023-08-30 07:56:40,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 65 transitions, 584 flow [2023-08-30 07:56:40,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 65 transitions, 552 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-30 07:56:40,171 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 454 flow [2023-08-30 07:56:40,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2023-08-30 07:56:40,172 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-08-30 07:56:40,172 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 454 flow [2023-08-30 07:56:40,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 07:56:40,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:56:40,181 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:40,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 07:56:40,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-30 07:56:40,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:56:40,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:56:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1781199716, now seen corresponding path program 2 times [2023-08-30 07:56:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:56:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988744366] [2023-08-30 07:56:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:56:40,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:56:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:56:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:56:40,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:56:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988744366] [2023-08-30 07:56:40,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988744366] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 07:56:40,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610603064] [2023-08-30 07:56:40,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:56:40,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 07:56:40,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:56:40,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 07:56:40,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 07:56:41,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:56:41,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:56:41,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 07:56:41,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:56:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 5 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:56:41,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:56:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:56:41,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610603064] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:56:41,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 07:56:41,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-08-30 07:56:41,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860094538] [2023-08-30 07:56:41,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 07:56:41,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 07:56:41,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:56:41,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 07:56:41,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-08-30 07:56:42,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 273 [2023-08-30 07:56:42,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 454 flow. Second operand has 31 states, 31 states have (on average 125.19354838709677) internal successors, (3881), 31 states have internal predecessors, (3881), 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 07:56:42,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:56:42,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 273 [2023-08-30 07:56:42,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:56:42,914 INFO L130 PetriNetUnfolder]: 657/1645 cut-off events. [2023-08-30 07:56:42,914 INFO L131 PetriNetUnfolder]: For 6254/6286 co-relation queries the response was YES. [2023-08-30 07:56:42,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5927 conditions, 1645 events. 657/1645 cut-off events. For 6254/6286 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8810 event pairs, 59 based on Foata normal form. 62/1701 useless extension candidates. Maximal degree in co-relation 5898. Up to 283 conditions per place. [2023-08-30 07:56:42,924 INFO L137 encePairwiseOnDemand]: 266/273 looper letters, 0 selfloop transitions, 0 changer transitions 129/129 dead transitions. [2023-08-30 07:56:42,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 1105 flow [2023-08-30 07:56:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 07:56:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 07:56:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1544 transitions. [2023-08-30 07:56:42,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713064713064713 [2023-08-30 07:56:42,929 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1544 transitions. [2023-08-30 07:56:42,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1544 transitions. [2023-08-30 07:56:42,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:56:42,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1544 transitions. [2023-08-30 07:56:42,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 128.66666666666666) internal successors, (1544), 12 states have internal predecessors, (1544), 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 07:56:42,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 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 07:56:42,939 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 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 07:56:42,939 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 454 flow. Second operand 12 states and 1544 transitions. [2023-08-30 07:56:42,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 1105 flow [2023-08-30 07:56:42,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 1104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:56:42,953 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-08-30 07:56:42,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-08-30 07:56:42,954 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-30 07:56:42,954 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-08-30 07:56:42,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 125.19354838709677) internal successors, (3881), 31 states have internal predecessors, (3881), 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 07:56:42,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-30 07:56:42,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 07:56:42,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 07:56:42,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 07:56:42,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 07:56:42,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 07:56:42,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 07:56:42,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 07:56:42,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-30 07:56:42,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 07:56:42,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 07:56:42,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 07:56:42,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 07:56:43,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 07:56:43,169 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:56:43,171 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 07:56:43,172 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 07:56:43,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:56:43 BasicIcfg [2023-08-30 07:56:43,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 07:56:43,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 07:56:43,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 07:56:43,175 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 07:56:43,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:56:25" (3/4) ... [2023-08-30 07:56:43,178 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 07:56:43,184 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 07:56:43,184 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 07:56:43,193 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-30 07:56:43,193 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 07:56:43,194 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 07:56:43,194 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 07:56:43,228 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 07:56:43,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 07:56:43,229 INFO L158 Benchmark]: Toolchain (without parser) took 19206.05ms. Allocated memory was 77.6MB in the beginning and 436.2MB in the end (delta: 358.6MB). Free memory was 54.0MB in the beginning and 208.5MB in the end (delta: -154.6MB). Peak memory consumption was 207.5MB. Max. memory is 16.1GB. [2023-08-30 07:56:43,229 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:56:43,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.69ms. Allocated memory is still 77.6MB. Free memory was 53.7MB in the beginning and 46.6MB in the end (delta: 7.2MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2023-08-30 07:56:43,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.03ms. Allocated memory is still 77.6MB. Free memory was 46.6MB in the beginning and 44.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:56:43,230 INFO L158 Benchmark]: Boogie Preprocessor took 53.86ms. Allocated memory is still 77.6MB. Free memory was 44.2MB in the beginning and 42.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:56:43,230 INFO L158 Benchmark]: RCFGBuilder took 531.02ms. Allocated memory is still 77.6MB. Free memory was 42.4MB in the beginning and 49.5MB in the end (delta: -7.1MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2023-08-30 07:56:43,231 INFO L158 Benchmark]: TraceAbstraction took 17901.66ms. Allocated memory was 77.6MB in the beginning and 436.2MB in the end (delta: 358.6MB). Free memory was 48.7MB in the beginning and 211.2MB in the end (delta: -162.5MB). Peak memory consumption was 315.0MB. Max. memory is 16.1GB. [2023-08-30 07:56:43,231 INFO L158 Benchmark]: Witness Printer took 53.65ms. Allocated memory is still 436.2MB. Free memory was 211.2MB in the beginning and 208.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:56:43,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 60.8MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.69ms. Allocated memory is still 77.6MB. Free memory was 53.7MB in the beginning and 46.6MB in the end (delta: 7.2MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.03ms. Allocated memory is still 77.6MB. Free memory was 46.6MB in the beginning and 44.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.86ms. Allocated memory is still 77.6MB. Free memory was 44.2MB in the beginning and 42.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 531.02ms. Allocated memory is still 77.6MB. Free memory was 42.4MB in the beginning and 49.5MB in the end (delta: -7.1MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17901.66ms. Allocated memory was 77.6MB in the beginning and 436.2MB in the end (delta: 358.6MB). Free memory was 48.7MB in the beginning and 211.2MB in the end (delta: -162.5MB). Peak memory consumption was 315.0MB. Max. memory is 16.1GB. * Witness Printer took 53.65ms. Allocated memory is still 436.2MB. Free memory was 211.2MB in the beginning and 208.5MB in the end (delta: 2.7MB). 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: 6.5s, 134 PlacesBefore, 42 PlacesAfterwards, 137 TransitionsBefore, 40 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 130 TotalNumberOfCompositions, 5425 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3215, independent: 3049, independent conditional: 0, independent unconditional: 3049, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1186, independent: 1162, independent conditional: 0, independent unconditional: 1162, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3215, independent: 1887, independent conditional: 0, independent unconditional: 1887, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 1186, unknown conditional: 0, unknown unconditional: 1186] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, 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: 919]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 906]: 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 5 procedures, 179 locations, 12 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: 17.8s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1056 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 753 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3140 IncrementalHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 71 mSDtfsCounter, 3140 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 484 GetRequests, 396 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=486occurred in iteration=13, InterpolantAutomatonStates: 78, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 709 NumberOfCodeBlocks, 658 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 811 ConstructedInterpolants, 56 QuantifiedInterpolants, 4456 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1816 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 551/819 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 07:56:43,265 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