./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.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 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:31:50,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:31:50,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:31:50,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:31:50,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:31:50,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:31:50,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:31:50,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:31:50,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:31:50,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:31:50,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:31:50,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:31:50,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:31:50,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:31:50,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:31:50,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:31:50,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:31:50,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:31:50,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:31:50,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:31:50,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:31:50,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:31:50,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:31:50,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:31:50,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:31:50,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:31:50,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:31:50,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:31:50,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:31:50,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:31:50,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:31:50,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:31:50,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:31:50,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:31:50,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:31:50,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:31:50,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:31:50,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:31:50,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:31:50,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:31:50,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:31:50,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:31:50,314 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:31:50,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:31:50,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:31:50,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:31:50,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:31:50,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:31:50,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:31:50,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:31:50,318 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:31:50,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:31:50,319 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:31:50,319 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:31:50,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:31:50,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:31:50,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:31:50,319 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:31:50,320 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:31:50,320 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:31:50,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:31:50,320 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:31:50,320 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:31:50,321 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:31:50,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:31:50,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:31:50,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:31:50,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:31:50,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:31:50,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:31:50,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:31:50,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:31:50,322 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:31:50,322 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:31:50,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:31:50,323 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:31:50,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:31:50,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:31:50,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:31:50,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:31:50,684 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:31:50,684 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:31:50,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-29 20:31:51,829 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:31:52,136 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:31:52,150 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-29 20:31:52,171 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1fa3d632/8a6f656c1d14484f85a78cc860490557/FLAG6c69bc9bf [2023-08-29 20:31:52,192 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1fa3d632/8a6f656c1d14484f85a78cc860490557 [2023-08-29 20:31:52,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:31:52,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:31:52,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:31:52,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:31:52,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:31:52,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a9a826d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52, skipping insertion in model container [2023-08-29 20:31:52,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:31:52,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:31:52,374 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-wmm/rfi002_tso.i[987,1000] [2023-08-29 20:31:52,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:31:52,666 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:31:52,679 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-wmm/rfi002_tso.i[987,1000] [2023-08-29 20:31:52,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:31:52,774 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:31:52,774 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:31:52,780 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:31:52,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52 WrapperNode [2023-08-29 20:31:52,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:31:52,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:31:52,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:31:52,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:31:52,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,850 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-08-29 20:31:52,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:31:52,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:31:52,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:31:52,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:31:52,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:31:52,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:31:52,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:31:52,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:31:52,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (1/1) ... [2023-08-29 20:31:52,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:31:52,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:31:52,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:31:52,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:31:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:31:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:31:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:31:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:31:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:31:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:31:52,975 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:31:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:31:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:31:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:31:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:31:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:31:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:31:52,977 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:31:53,118 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:31:53,134 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:31:53,600 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:31:53,786 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:31:53,786 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:31:53,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:31:53 BoogieIcfgContainer [2023-08-29 20:31:53,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:31:53,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:31:53,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:31:53,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:31:53,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:31:52" (1/3) ... [2023-08-29 20:31:53,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd800bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:31:53, skipping insertion in model container [2023-08-29 20:31:53,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:31:52" (2/3) ... [2023-08-29 20:31:53,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd800bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:31:53, skipping insertion in model container [2023-08-29 20:31:53,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:31:53" (3/3) ... [2023-08-29 20:31:53,796 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-08-29 20:31:53,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:31:53,811 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-29 20:31:53,812 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:31:53,879 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:31:53,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 115 transitions, 240 flow [2023-08-29 20:31:53,983 INFO L130 PetriNetUnfolder]: 2/113 cut-off events. [2023-08-29 20:31:53,983 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:31:53,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 113 events. 2/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-29 20:31:53,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 115 transitions, 240 flow [2023-08-29 20:31:53,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 113 transitions, 232 flow [2023-08-29 20:31:53,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:31:54,019 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 113 transitions, 232 flow [2023-08-29 20:31:54,023 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 113 transitions, 232 flow [2023-08-29 20:31:54,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 113 transitions, 232 flow [2023-08-29 20:31:54,062 INFO L130 PetriNetUnfolder]: 2/113 cut-off events. [2023-08-29 20:31:54,063 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:31:54,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 113 events. 2/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-08-29 20:31:54,065 INFO L119 LiptonReduction]: Number of co-enabled transitions 1460 [2023-08-29 20:31:59,669 INFO L134 LiptonReduction]: Checked pairs total: 4743 [2023-08-29 20:31:59,670 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-29 20:31:59,681 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:31:59,687 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;@6f4aaea8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:31:59,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 20:31:59,688 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:31:59,688 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:31:59,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:31:59,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:31:59,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:31:59,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:31:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash 664, now seen corresponding path program 1 times [2023-08-29 20:31:59,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:31:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818985583] [2023-08-29 20:31:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:31:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:31:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:31:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:31:59,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:31:59,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818985583] [2023-08-29 20:31:59,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818985583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:31:59,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:31:59,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:31:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821851011] [2023-08-29 20:31:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:31:59,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:31:59,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:31:59,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:31:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:31:59,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 229 [2023-08-29 20:31:59,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:31:59,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:31:59,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 229 [2023-08-29 20:31:59,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:00,049 INFO L130 PetriNetUnfolder]: 515/852 cut-off events. [2023-08-29 20:32:00,056 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 20:32:00,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 852 events. 515/852 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3506 event pairs, 515 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1712. Up to 853 conditions per place. [2023-08-29 20:32:00,063 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 22 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-29 20:32:00,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 94 flow [2023-08-29 20:32:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:32:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:32:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 222 transitions. [2023-08-29 20:32:00,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847161572052402 [2023-08-29 20:32:00,076 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 222 transitions. [2023-08-29 20:32:00,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 222 transitions. [2023-08-29 20:32:00,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:00,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 222 transitions. [2023-08-29 20:32:00,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,087 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,089 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 2 states and 222 transitions. [2023-08-29 20:32:00,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 94 flow [2023-08-29 20:32:00,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:00,092 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 48 flow [2023-08-29 20:32:00,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-29 20:32:00,097 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-29 20:32:00,097 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 48 flow [2023-08-29 20:32:00,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:00,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 20:32:00,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:32:00,098 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:00,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash 631124598, now seen corresponding path program 1 times [2023-08-29 20:32:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:00,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374494882] [2023-08-29 20:32:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:00,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:00,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374494882] [2023-08-29 20:32:00,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374494882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:00,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:00,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:32:00,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230571690] [2023-08-29 20:32:00,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:00,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:32:00,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:32:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:32:00,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 229 [2023-08-29 20:32:00,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:00,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 229 [2023-08-29 20:32:00,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:00,645 INFO L130 PetriNetUnfolder]: 455/756 cut-off events. [2023-08-29 20:32:00,646 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:32:00,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 756 events. 455/756 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3247 event pairs, 35 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1526. Up to 673 conditions per place. [2023-08-29 20:32:00,650 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-29 20:32:00,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 128 flow [2023-08-29 20:32:00,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:32:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:32:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-08-29 20:32:00,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016011644832606 [2023-08-29 20:32:00,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-08-29 20:32:00,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-08-29 20:32:00,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:00,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-08-29 20:32:00,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,658 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 48 flow. Second operand 3 states and 323 transitions. [2023-08-29 20:32:00,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 128 flow [2023-08-29 20:32:00,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:32:00,659 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 50 flow [2023-08-29 20:32:00,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-29 20:32:00,660 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-29 20:32:00,661 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 50 flow [2023-08-29 20:32:00,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:00,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 20:32:00,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:32:00,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:00,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1909973401, now seen corresponding path program 1 times [2023-08-29 20:32:00,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:00,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376949397] [2023-08-29 20:32:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:00,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:00,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:00,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376949397] [2023-08-29 20:32:00,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376949397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:00,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:00,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:32:00,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008970450] [2023-08-29 20:32:00,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:00,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:32:00,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:00,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:32:00,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:32:00,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 229 [2023-08-29 20:32:00,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 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) [2023-08-29 20:32:00,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:00,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 229 [2023-08-29 20:32:00,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:00,967 INFO L130 PetriNetUnfolder]: 395/660 cut-off events. [2023-08-29 20:32:00,967 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-29 20:32:00,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 660 events. 395/660 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2606 event pairs, 95 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 1371. Up to 481 conditions per place. [2023-08-29 20:32:00,970 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 26 selfloop transitions, 2 changer transitions 2/30 dead transitions. [2023-08-29 20:32:00,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 128 flow [2023-08-29 20:32:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:32:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:32:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-29 20:32:00,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46870451237263466 [2023-08-29 20:32:00,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-29 20:32:00,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-29 20:32:00,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:00,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-29 20:32:00,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:00,978 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 50 flow. Second operand 3 states and 322 transitions. [2023-08-29 20:32:00,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 128 flow [2023-08-29 20:32:00,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:00,980 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2023-08-29 20:32:00,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-29 20:32:00,981 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-08-29 20:32:00,984 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2023-08-29 20:32:00,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 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) [2023-08-29 20:32:00,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:00,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:00,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:32:00,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:00,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:00,985 INFO L85 PathProgramCache]: Analyzing trace with hash 920443590, now seen corresponding path program 1 times [2023-08-29 20:32:00,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:00,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762771912] [2023-08-29 20:32:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:00,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:01,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:01,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762771912] [2023-08-29 20:32:01,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762771912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:01,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:01,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:32:01,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959923175] [2023-08-29 20:32:01,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:01,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:32:01,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:01,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:32:01,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:32:01,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-08-29 20:32:01,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:01,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:01,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-08-29 20:32:01,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:02,060 INFO L130 PetriNetUnfolder]: 305/534 cut-off events. [2023-08-29 20:32:02,060 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-29 20:32:02,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 534 events. 305/534 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2049 event pairs, 119 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 1107. Up to 311 conditions per place. [2023-08-29 20:32:02,063 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 27 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2023-08-29 20:32:02,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 148 flow [2023-08-29 20:32:02,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:32:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:32:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2023-08-29 20:32:02,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366812227074236 [2023-08-29 20:32:02,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 400 transitions. [2023-08-29 20:32:02,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 400 transitions. [2023-08-29 20:32:02,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:02,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 400 transitions. [2023-08-29 20:32:02,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.0) internal successors, (400), 4 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) [2023-08-29 20:32:02,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:02,073 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:02,073 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 4 states and 400 transitions. [2023-08-29 20:32:02,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 148 flow [2023-08-29 20:32:02,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:02,075 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 100 flow [2023-08-29 20:32:02,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-29 20:32:02,077 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-08-29 20:32:02,077 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 100 flow [2023-08-29 20:32:02,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:02,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:02,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:02,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:32:02,078 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:02,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:02,079 INFO L85 PathProgramCache]: Analyzing trace with hash 920443601, now seen corresponding path program 1 times [2023-08-29 20:32:02,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:02,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542200021] [2023-08-29 20:32:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:02,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:02,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:02,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542200021] [2023-08-29 20:32:02,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542200021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:02,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:02,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:32:02,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457354934] [2023-08-29 20:32:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:02,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:32:02,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:32:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:32:02,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 229 [2023-08-29 20:32:02,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:02,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:02,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 229 [2023-08-29 20:32:02,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:02,582 INFO L130 PetriNetUnfolder]: 351/625 cut-off events. [2023-08-29 20:32:02,582 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-29 20:32:02,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 625 events. 351/625 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2508 event pairs, 289 based on Foata normal form. 42/667 useless extension candidates. Maximal degree in co-relation 1613. Up to 373 conditions per place. [2023-08-29 20:32:02,586 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 36 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-29 20:32:02,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 216 flow [2023-08-29 20:32:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:32:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:32:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2023-08-29 20:32:02,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42358078602620086 [2023-08-29 20:32:02,588 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2023-08-29 20:32:02,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2023-08-29 20:32:02,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:02,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2023-08-29 20:32:02,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 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) [2023-08-29 20:32:02,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:02,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:02,592 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 100 flow. Second operand 4 states and 388 transitions. [2023-08-29 20:32:02,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 216 flow [2023-08-29 20:32:02,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:32:02,595 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 110 flow [2023-08-29 20:32:02,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-29 20:32:02,595 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2023-08-29 20:32:02,596 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 110 flow [2023-08-29 20:32:02,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:02,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:02,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:02,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:32:02,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:02,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:02,597 INFO L85 PathProgramCache]: Analyzing trace with hash -323829963, now seen corresponding path program 1 times [2023-08-29 20:32:02,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:02,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504342405] [2023-08-29 20:32:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:02,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:03,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:03,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504342405] [2023-08-29 20:32:03,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504342405] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:03,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:03,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:32:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147812645] [2023-08-29 20:32:03,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:03,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:32:03,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:03,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:32:03,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:32:03,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-08-29 20:32:03,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:03,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:03,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-08-29 20:32:03,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:03,451 INFO L130 PetriNetUnfolder]: 335/605 cut-off events. [2023-08-29 20:32:03,452 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2023-08-29 20:32:03,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 605 events. 335/605 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2510 event pairs, 197 based on Foata normal form. 12/617 useless extension candidates. Maximal degree in co-relation 1609. Up to 422 conditions per place. [2023-08-29 20:32:03,456 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 29 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2023-08-29 20:32:03,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 234 flow [2023-08-29 20:32:03,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:32:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:32:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-08-29 20:32:03,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388646288209607 [2023-08-29 20:32:03,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-08-29 20:32:03,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-08-29 20:32:03,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:03,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-08-29 20:32:03,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 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) [2023-08-29 20:32:03,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:03,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:03,462 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 110 flow. Second operand 4 states and 402 transitions. [2023-08-29 20:32:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 234 flow [2023-08-29 20:32:03,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:32:03,465 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 160 flow [2023-08-29 20:32:03,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-29 20:32:03,466 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-29 20:32:03,466 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 160 flow [2023-08-29 20:32:03,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:03,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:03,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:03,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:32:03,467 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:03,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash -887303660, now seen corresponding path program 1 times [2023-08-29 20:32:03,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:03,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552488092] [2023-08-29 20:32:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:03,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552488092] [2023-08-29 20:32:03,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552488092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:03,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:03,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:32:03,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121128191] [2023-08-29 20:32:03,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:03,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:32:03,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:03,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:32:03,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:32:03,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 229 [2023-08-29 20:32:03,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:03,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:03,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 229 [2023-08-29 20:32:03,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:04,003 INFO L130 PetriNetUnfolder]: 293/522 cut-off events. [2023-08-29 20:32:04,004 INFO L131 PetriNetUnfolder]: For 555/555 co-relation queries the response was YES. [2023-08-29 20:32:04,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 522 events. 293/522 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2033 event pairs, 197 based on Foata normal form. 21/543 useless extension candidates. Maximal degree in co-relation 1519. Up to 515 conditions per place. [2023-08-29 20:32:04,007 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 21 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-08-29 20:32:04,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 155 flow [2023-08-29 20:32:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:32:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:32:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2023-08-29 20:32:04,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40611353711790393 [2023-08-29 20:32:04,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2023-08-29 20:32:04,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2023-08-29 20:32:04,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:04,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2023-08-29 20:32:04,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:04,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:04,013 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:04,014 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 160 flow. Second operand 4 states and 372 transitions. [2023-08-29 20:32:04,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 155 flow [2023-08-29 20:32:04,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 144 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 20:32:04,017 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 88 flow [2023-08-29 20:32:04,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-08-29 20:32:04,018 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-29 20:32:04,019 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 88 flow [2023-08-29 20:32:04,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:04,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:04,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:04,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:32:04,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:04,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:04,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1621822068, now seen corresponding path program 1 times [2023-08-29 20:32:04,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:04,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325747511] [2023-08-29 20:32:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:04,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:05,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:05,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325747511] [2023-08-29 20:32:05,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325747511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:05,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:05,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 20:32:05,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747913013] [2023-08-29 20:32:05,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:05,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 20:32:05,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 20:32:05,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 20:32:05,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 229 [2023-08-29 20:32:05,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:05,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:05,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 229 [2023-08-29 20:32:05,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:05,794 INFO L130 PetriNetUnfolder]: 393/693 cut-off events. [2023-08-29 20:32:05,794 INFO L131 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2023-08-29 20:32:05,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 693 events. 393/693 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2971 event pairs, 74 based on Foata normal form. 7/700 useless extension candidates. Maximal degree in co-relation 1955. Up to 467 conditions per place. [2023-08-29 20:32:05,798 INFO L137 encePairwiseOnDemand]: 221/229 looper letters, 37 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-29 20:32:05,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 281 flow [2023-08-29 20:32:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:32:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:32:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 593 transitions. [2023-08-29 20:32:05,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315866084425036 [2023-08-29 20:32:05,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 593 transitions. [2023-08-29 20:32:05,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 593 transitions. [2023-08-29 20:32:05,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:05,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 593 transitions. [2023-08-29 20:32:05,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.83333333333333) internal successors, (593), 6 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:05,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:05,814 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:05,814 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 88 flow. Second operand 6 states and 593 transitions. [2023-08-29 20:32:05,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 281 flow [2023-08-29 20:32:05,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:05,816 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 168 flow [2023-08-29 20:32:05,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-08-29 20:32:05,817 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-08-29 20:32:05,817 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 168 flow [2023-08-29 20:32:05,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:05,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:05,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:05,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:32:05,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:05,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1308085620, now seen corresponding path program 2 times [2023-08-29 20:32:05,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:05,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223539195] [2023-08-29 20:32:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:05,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:07,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:07,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223539195] [2023-08-29 20:32:07,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223539195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:07,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:07,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 20:32:07,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500339036] [2023-08-29 20:32:07,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:07,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 20:32:07,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:07,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 20:32:07,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-29 20:32:07,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 229 [2023-08-29 20:32:07,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 94.625) internal successors, (757), 8 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:07,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:07,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 229 [2023-08-29 20:32:07,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:07,764 INFO L130 PetriNetUnfolder]: 463/816 cut-off events. [2023-08-29 20:32:07,765 INFO L131 PetriNetUnfolder]: For 963/963 co-relation queries the response was YES. [2023-08-29 20:32:07,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 816 events. 463/816 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3678 event pairs, 106 based on Foata normal form. 6/822 useless extension candidates. Maximal degree in co-relation 2743. Up to 530 conditions per place. [2023-08-29 20:32:07,771 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 53 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2023-08-29 20:32:07,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 62 transitions, 451 flow [2023-08-29 20:32:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:32:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:32:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 707 transitions. [2023-08-29 20:32:07,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410480349344978 [2023-08-29 20:32:07,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 707 transitions. [2023-08-29 20:32:07,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 707 transitions. [2023-08-29 20:32:07,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:07,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 707 transitions. [2023-08-29 20:32:07,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:07,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:07,780 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:07,780 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 168 flow. Second operand 7 states and 707 transitions. [2023-08-29 20:32:07,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 62 transitions, 451 flow [2023-08-29 20:32:07,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 433 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-29 20:32:07,785 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 218 flow [2023-08-29 20:32:07,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-08-29 20:32:07,787 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-29 20:32:07,787 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 218 flow [2023-08-29 20:32:07,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.625) internal successors, (757), 8 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:07,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:07,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:07,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:32:07,788 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:07,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:07,789 INFO L85 PathProgramCache]: Analyzing trace with hash -44446627, now seen corresponding path program 1 times [2023-08-29 20:32:07,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:07,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735695951] [2023-08-29 20:32:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:07,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:09,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:09,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735695951] [2023-08-29 20:32:09,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735695951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:09,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:09,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:32:09,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156012096] [2023-08-29 20:32:09,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:09,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:32:09,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:09,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:32:09,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:32:09,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 229 [2023-08-29 20:32:09,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 218 flow. Second operand has 9 states, 9 states have (on average 94.55555555555556) internal successors, (851), 9 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:09,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:09,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 229 [2023-08-29 20:32:09,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:09,945 INFO L130 PetriNetUnfolder]: 457/806 cut-off events. [2023-08-29 20:32:09,946 INFO L131 PetriNetUnfolder]: For 1226/1226 co-relation queries the response was YES. [2023-08-29 20:32:09,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 806 events. 457/806 cut-off events. For 1226/1226 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3624 event pairs, 104 based on Foata normal form. 4/810 useless extension candidates. Maximal degree in co-relation 2814. Up to 456 conditions per place. [2023-08-29 20:32:09,952 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 38 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2023-08-29 20:32:09,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 392 flow [2023-08-29 20:32:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:32:09,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:32:09,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2023-08-29 20:32:09,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393013100436681 [2023-08-29 20:32:09,955 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2023-08-29 20:32:09,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2023-08-29 20:32:09,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:09,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2023-08-29 20:32:09,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:09,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:09,960 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:09,960 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 218 flow. Second operand 5 states and 503 transitions. [2023-08-29 20:32:09,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 392 flow [2023-08-29 20:32:09,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 378 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:09,966 INFO L231 Difference]: Finished difference. Result has 52 places, 33 transitions, 237 flow [2023-08-29 20:32:09,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=52, PETRI_TRANSITIONS=33} [2023-08-29 20:32:09,968 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-29 20:32:09,968 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 33 transitions, 237 flow [2023-08-29 20:32:09,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 94.55555555555556) internal successors, (851), 9 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:09,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:09,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:09,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:32:09,969 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:09,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:09,970 INFO L85 PathProgramCache]: Analyzing trace with hash -44437947, now seen corresponding path program 1 times [2023-08-29 20:32:09,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:09,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496770532] [2023-08-29 20:32:09,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:09,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:11,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:11,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496770532] [2023-08-29 20:32:11,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496770532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:11,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:11,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 20:32:11,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897542031] [2023-08-29 20:32:11,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:11,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 20:32:11,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 20:32:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-29 20:32:11,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 229 [2023-08-29 20:32:11,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 33 transitions, 237 flow. Second operand has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:11,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:11,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 229 [2023-08-29 20:32:11,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:12,130 INFO L130 PetriNetUnfolder]: 559/1028 cut-off events. [2023-08-29 20:32:12,130 INFO L131 PetriNetUnfolder]: For 2328/2328 co-relation queries the response was YES. [2023-08-29 20:32:12,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 1028 events. 559/1028 cut-off events. For 2328/2328 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5233 event pairs, 117 based on Foata normal form. 18/1046 useless extension candidates. Maximal degree in co-relation 3784. Up to 405 conditions per place. [2023-08-29 20:32:12,136 INFO L137 encePairwiseOnDemand]: 218/229 looper letters, 40 selfloop transitions, 6 changer transitions 40/86 dead transitions. [2023-08-29 20:32:12,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 702 flow [2023-08-29 20:32:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:32:12,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:32:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 754 transitions. [2023-08-29 20:32:12,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115720524017467 [2023-08-29 20:32:12,139 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 754 transitions. [2023-08-29 20:32:12,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 754 transitions. [2023-08-29 20:32:12,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:12,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 754 transitions. [2023-08-29 20:32:12,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.25) internal successors, (754), 8 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:12,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:12,145 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:12,145 INFO L175 Difference]: Start difference. First operand has 52 places, 33 transitions, 237 flow. Second operand 8 states and 754 transitions. [2023-08-29 20:32:12,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 702 flow [2023-08-29 20:32:12,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 86 transitions, 658 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-29 20:32:12,154 INFO L231 Difference]: Finished difference. Result has 59 places, 34 transitions, 257 flow [2023-08-29 20:32:12,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=257, PETRI_PLACES=59, PETRI_TRANSITIONS=34} [2023-08-29 20:32:12,155 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2023-08-29 20:32:12,155 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 34 transitions, 257 flow [2023-08-29 20:32:12,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.4) internal successors, (874), 10 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:12,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:12,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:12,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:32:12,156 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:12,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:12,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1000490425, now seen corresponding path program 2 times [2023-08-29 20:32:12,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:12,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703428640] [2023-08-29 20:32:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:12,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:12,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:12,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703428640] [2023-08-29 20:32:12,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703428640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:12,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:12,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:32:12,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925207199] [2023-08-29 20:32:12,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:12,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:32:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:12,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:32:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:32:12,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 229 [2023-08-29 20:32:12,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 34 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 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) [2023-08-29 20:32:12,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:12,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 229 [2023-08-29 20:32:12,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:12,787 INFO L130 PetriNetUnfolder]: 287/572 cut-off events. [2023-08-29 20:32:12,788 INFO L131 PetriNetUnfolder]: For 1756/1756 co-relation queries the response was YES. [2023-08-29 20:32:12,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 572 events. 287/572 cut-off events. For 1756/1756 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2647 event pairs, 122 based on Foata normal form. 18/590 useless extension candidates. Maximal degree in co-relation 2333. Up to 370 conditions per place. [2023-08-29 20:32:12,792 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 30 selfloop transitions, 8 changer transitions 13/51 dead transitions. [2023-08-29 20:32:12,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 450 flow [2023-08-29 20:32:12,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:32:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:32:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2023-08-29 20:32:12,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519650655021834 [2023-08-29 20:32:12,794 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2023-08-29 20:32:12,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2023-08-29 20:32:12,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:12,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2023-08-29 20:32:12,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:12,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:12,797 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:12,798 INFO L175 Difference]: Start difference. First operand has 59 places, 34 transitions, 257 flow. Second operand 4 states and 414 transitions. [2023-08-29 20:32:12,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 450 flow [2023-08-29 20:32:12,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 434 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-29 20:32:12,802 INFO L231 Difference]: Finished difference. Result has 57 places, 34 transitions, 272 flow [2023-08-29 20:32:12,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=34} [2023-08-29 20:32:12,804 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-29 20:32:12,804 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 272 flow [2023-08-29 20:32:12,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 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) [2023-08-29 20:32:12,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:12,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:12,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:32:12,805 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:12,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:12,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1986469247, now seen corresponding path program 3 times [2023-08-29 20:32:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:12,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507866304] [2023-08-29 20:32:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:14,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:14,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507866304] [2023-08-29 20:32:14,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507866304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:14,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:14,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 20:32:14,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306415422] [2023-08-29 20:32:14,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:14,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 20:32:14,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 20:32:14,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-29 20:32:14,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 229 [2023-08-29 20:32:14,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 272 flow. Second operand has 11 states, 11 states have (on average 91.27272727272727) internal successors, (1004), 11 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:14,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:14,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 229 [2023-08-29 20:32:14,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:14,660 INFO L130 PetriNetUnfolder]: 205/433 cut-off events. [2023-08-29 20:32:14,660 INFO L131 PetriNetUnfolder]: For 1613/1613 co-relation queries the response was YES. [2023-08-29 20:32:14,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1903 conditions, 433 events. 205/433 cut-off events. For 1613/1613 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1928 event pairs, 91 based on Foata normal form. 15/448 useless extension candidates. Maximal degree in co-relation 1881. Up to 251 conditions per place. [2023-08-29 20:32:14,664 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 20 selfloop transitions, 2 changer transitions 44/66 dead transitions. [2023-08-29 20:32:14,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 644 flow [2023-08-29 20:32:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:32:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:32:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 771 transitions. [2023-08-29 20:32:14,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42085152838427947 [2023-08-29 20:32:14,667 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 771 transitions. [2023-08-29 20:32:14,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 771 transitions. [2023-08-29 20:32:14,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:14,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 771 transitions. [2023-08-29 20:32:14,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.375) internal successors, (771), 8 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:14,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:14,672 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:14,672 INFO L175 Difference]: Start difference. First operand has 57 places, 34 transitions, 272 flow. Second operand 8 states and 771 transitions. [2023-08-29 20:32:14,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 644 flow [2023-08-29 20:32:14,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 620 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-29 20:32:14,677 INFO L231 Difference]: Finished difference. Result has 63 places, 20 transitions, 144 flow [2023-08-29 20:32:14,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=20} [2023-08-29 20:32:14,678 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-08-29 20:32:14,679 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 20 transitions, 144 flow [2023-08-29 20:32:14,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 91.27272727272727) internal successors, (1004), 11 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:14,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:14,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:14,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 20:32:14,680 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:14,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:14,680 INFO L85 PathProgramCache]: Analyzing trace with hash 255562789, now seen corresponding path program 4 times [2023-08-29 20:32:14,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:14,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802419042] [2023-08-29 20:32:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:14,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:15,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802419042] [2023-08-29 20:32:15,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802419042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:15,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:15,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:32:15,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634250162] [2023-08-29 20:32:15,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:15,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:32:15,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:15,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:32:15,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:32:15,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-08-29 20:32:15,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 20 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:15,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:15,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-08-29 20:32:15,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:15,478 INFO L130 PetriNetUnfolder]: 153/282 cut-off events. [2023-08-29 20:32:15,478 INFO L131 PetriNetUnfolder]: For 934/934 co-relation queries the response was YES. [2023-08-29 20:32:15,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 282 events. 153/282 cut-off events. For 934/934 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 937 event pairs, 40 based on Foata normal form. 3/285 useless extension candidates. Maximal degree in co-relation 1214. Up to 204 conditions per place. [2023-08-29 20:32:15,481 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 25 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2023-08-29 20:32:15,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 34 transitions, 301 flow [2023-08-29 20:32:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:32:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:32:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 493 transitions. [2023-08-29 20:32:15,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43056768558951963 [2023-08-29 20:32:15,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 493 transitions. [2023-08-29 20:32:15,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 493 transitions. [2023-08-29 20:32:15,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:15,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 493 transitions. [2023-08-29 20:32:15,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.6) internal successors, (493), 5 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:15,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:15,487 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:15,487 INFO L175 Difference]: Start difference. First operand has 63 places, 20 transitions, 144 flow. Second operand 5 states and 493 transitions. [2023-08-29 20:32:15,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 34 transitions, 301 flow [2023-08-29 20:32:15,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 241 flow, removed 20 selfloop flow, removed 15 redundant places. [2023-08-29 20:32:15,491 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 185 flow [2023-08-29 20:32:15,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=185, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-08-29 20:32:15,492 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-29 20:32:15,492 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 185 flow [2023-08-29 20:32:15,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:15,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:15,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:15,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 20:32:15,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:15,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:15,493 INFO L85 PathProgramCache]: Analyzing trace with hash 255573019, now seen corresponding path program 5 times [2023-08-29 20:32:15,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:15,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092070483] [2023-08-29 20:32:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:15,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:16,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:16,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092070483] [2023-08-29 20:32:16,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092070483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:16,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:16,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:32:16,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624925151] [2023-08-29 20:32:16,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:16,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:32:16,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:32:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:32:16,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-08-29 20:32:16,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:16,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:16,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-08-29 20:32:16,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:16,703 INFO L130 PetriNetUnfolder]: 201/403 cut-off events. [2023-08-29 20:32:16,703 INFO L131 PetriNetUnfolder]: For 1119/1119 co-relation queries the response was YES. [2023-08-29 20:32:16,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 403 events. 201/403 cut-off events. For 1119/1119 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1732 event pairs, 34 based on Foata normal form. 18/421 useless extension candidates. Maximal degree in co-relation 1723. Up to 169 conditions per place. [2023-08-29 20:32:16,706 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 34 selfloop transitions, 6 changer transitions 23/63 dead transitions. [2023-08-29 20:32:16,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 567 flow [2023-08-29 20:32:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:32:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:32:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 691 transitions. [2023-08-29 20:32:16,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310667498440424 [2023-08-29 20:32:16,710 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 691 transitions. [2023-08-29 20:32:16,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 691 transitions. [2023-08-29 20:32:16,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:16,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 691 transitions. [2023-08-29 20:32:16,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.71428571428571) internal successors, (691), 7 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:16,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:16,715 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:16,715 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 185 flow. Second operand 7 states and 691 transitions. [2023-08-29 20:32:16,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 567 flow [2023-08-29 20:32:16,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 480 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-08-29 20:32:16,719 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 188 flow [2023-08-29 20:32:16,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2023-08-29 20:32:16,720 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-29 20:32:16,720 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 188 flow [2023-08-29 20:32:16,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:16,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:16,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:16,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 20:32:16,721 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:16,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:16,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1190269735, now seen corresponding path program 6 times [2023-08-29 20:32:16,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:16,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045179670] [2023-08-29 20:32:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:16,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:17,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:17,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045179670] [2023-08-29 20:32:17,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045179670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:17,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:17,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:32:17,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347053172] [2023-08-29 20:32:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:17,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:32:17,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:17,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:32:17,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:32:17,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 229 [2023-08-29 20:32:17,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:17,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:17,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 229 [2023-08-29 20:32:17,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:17,383 INFO L130 PetriNetUnfolder]: 114/247 cut-off events. [2023-08-29 20:32:17,383 INFO L131 PetriNetUnfolder]: For 825/825 co-relation queries the response was YES. [2023-08-29 20:32:17,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 247 events. 114/247 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 913 event pairs, 41 based on Foata normal form. 18/265 useless extension candidates. Maximal degree in co-relation 984. Up to 149 conditions per place. [2023-08-29 20:32:17,385 INFO L137 encePairwiseOnDemand]: 221/229 looper letters, 25 selfloop transitions, 6 changer transitions 16/47 dead transitions. [2023-08-29 20:32:17,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 397 flow [2023-08-29 20:32:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:32:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:32:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2023-08-29 20:32:17,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43231441048034935 [2023-08-29 20:32:17,388 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2023-08-29 20:32:17,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2023-08-29 20:32:17,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:17,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2023-08-29 20:32:17,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:17,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:17,392 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:17,392 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 188 flow. Second operand 6 states and 594 transitions. [2023-08-29 20:32:17,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 397 flow [2023-08-29 20:32:17,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 382 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-29 20:32:17,395 INFO L231 Difference]: Finished difference. Result has 49 places, 25 transitions, 188 flow [2023-08-29 20:32:17,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=25} [2023-08-29 20:32:17,396 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2023-08-29 20:32:17,396 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 25 transitions, 188 flow [2023-08-29 20:32:17,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:17,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:17,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:17,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 20:32:17,397 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:17,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:17,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1530125255, now seen corresponding path program 7 times [2023-08-29 20:32:17,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:17,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800680855] [2023-08-29 20:32:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:17,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:18,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800680855] [2023-08-29 20:32:18,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800680855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:18,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:18,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 20:32:18,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665001942] [2023-08-29 20:32:18,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:18,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 20:32:18,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:18,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 20:32:18,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-29 20:32:18,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 229 [2023-08-29 20:32:18,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 25 transitions, 188 flow. Second operand has 10 states, 10 states have (on average 90.4) internal successors, (904), 10 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:18,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:18,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 229 [2023-08-29 20:32:18,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:18,934 INFO L130 PetriNetUnfolder]: 123/248 cut-off events. [2023-08-29 20:32:18,934 INFO L131 PetriNetUnfolder]: For 849/849 co-relation queries the response was YES. [2023-08-29 20:32:18,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 248 events. 123/248 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 882 event pairs, 17 based on Foata normal form. 9/257 useless extension candidates. Maximal degree in co-relation 1112. Up to 89 conditions per place. [2023-08-29 20:32:18,936 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 24 selfloop transitions, 4 changer transitions 55/83 dead transitions. [2023-08-29 20:32:18,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 804 flow [2023-08-29 20:32:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 20:32:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 20:32:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1041 transitions. [2023-08-29 20:32:18,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132592298531163 [2023-08-29 20:32:18,939 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1041 transitions. [2023-08-29 20:32:18,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1041 transitions. [2023-08-29 20:32:18,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:18,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1041 transitions. [2023-08-29 20:32:18,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 94.63636363636364) internal successors, (1041), 11 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:18,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:18,946 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:18,946 INFO L175 Difference]: Start difference. First operand has 49 places, 25 transitions, 188 flow. Second operand 11 states and 1041 transitions. [2023-08-29 20:32:18,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 804 flow [2023-08-29 20:32:18,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 83 transitions, 736 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-08-29 20:32:18,949 INFO L231 Difference]: Finished difference. Result has 60 places, 25 transitions, 205 flow [2023-08-29 20:32:18,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=205, PETRI_PLACES=60, PETRI_TRANSITIONS=25} [2023-08-29 20:32:18,950 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-29 20:32:18,950 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 25 transitions, 205 flow [2023-08-29 20:32:18,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.4) internal successors, (904), 10 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:18,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:18,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:18,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 20:32:18,951 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 20:32:18,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:18,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1899426405, now seen corresponding path program 8 times [2023-08-29 20:32:18,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:18,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068401446] [2023-08-29 20:32:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:18,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:32:19,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:19,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068401446] [2023-08-29 20:32:19,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068401446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:19,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:19,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 20:32:19,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174308443] [2023-08-29 20:32:19,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:19,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 20:32:19,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 20:32:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-29 20:32:19,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 229 [2023-08-29 20:32:19,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 25 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:19,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:19,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 229 [2023-08-29 20:32:19,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:19,821 INFO L130 PetriNetUnfolder]: 23/64 cut-off events. [2023-08-29 20:32:19,822 INFO L131 PetriNetUnfolder]: For 363/363 co-relation queries the response was YES. [2023-08-29 20:32:19,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 64 events. 23/64 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 2 based on Foata normal form. 9/73 useless extension candidates. Maximal degree in co-relation 290. Up to 26 conditions per place. [2023-08-29 20:32:19,822 INFO L137 encePairwiseOnDemand]: 224/229 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-29 20:32:19,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 29 transitions, 268 flow [2023-08-29 20:32:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:32:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:32:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 587 transitions. [2023-08-29 20:32:19,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4272197962154294 [2023-08-29 20:32:19,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 587 transitions. [2023-08-29 20:32:19,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 587 transitions. [2023-08-29 20:32:19,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:19,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 587 transitions. [2023-08-29 20:32:19,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:19,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:19,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:19,829 INFO L175 Difference]: Start difference. First operand has 60 places, 25 transitions, 205 flow. Second operand 6 states and 587 transitions. [2023-08-29 20:32:19,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 29 transitions, 268 flow [2023-08-29 20:32:19,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 203 flow, removed 21 selfloop flow, removed 15 redundant places. [2023-08-29 20:32:19,831 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-29 20:32:19,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-29 20:32:19,832 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-29 20:32:19,832 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-29 20:32:19,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:19,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-29 20:32:19,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2023-08-29 20:32:19,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-29 20:32:19,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-29 20:32:19,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-29 20:32:19,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-29 20:32:19,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 12 remaining) [2023-08-29 20:32:19,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 12 remaining) [2023-08-29 20:32:19,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-08-29 20:32:19,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-08-29 20:32:19,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2023-08-29 20:32:19,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2023-08-29 20:32:19,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 20:32:19,837 INFO L445 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:19,841 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:32:19,841 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:32:19,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:32:19 BasicIcfg [2023-08-29 20:32:19,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:32:19,844 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:32:19,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:32:19,844 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:32:19,845 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:31:53" (3/4) ... [2023-08-29 20:32:19,847 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:32:19,851 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:32:19,851 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:32:19,857 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2023-08-29 20:32:19,858 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-29 20:32:19,858 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-29 20:32:19,858 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:32:19,899 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:32:19,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:32:19,900 INFO L158 Benchmark]: Toolchain (without parser) took 27704.35ms. Allocated memory was 60.8MB in the beginning and 463.5MB in the end (delta: 402.7MB). Free memory was 37.5MB in the beginning and 193.8MB in the end (delta: -156.3MB). Peak memory consumption was 247.6MB. Max. memory is 16.1GB. [2023-08-29 20:32:19,900 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 50.3MB. Free memory was 28.6MB in the beginning and 28.6MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:32:19,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 583.26ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 37.3MB in the beginning and 49.7MB in the end (delta: -12.4MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2023-08-29 20:32:19,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.61ms. Allocated memory is still 73.4MB. Free memory was 49.7MB in the beginning and 46.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:32:19,901 INFO L158 Benchmark]: Boogie Preprocessor took 39.06ms. Allocated memory is still 73.4MB. Free memory was 46.0MB in the beginning and 43.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:32:19,901 INFO L158 Benchmark]: RCFGBuilder took 898.26ms. Allocated memory is still 73.4MB. Free memory was 43.6MB in the beginning and 33.1MB in the end (delta: 10.5MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-08-29 20:32:19,903 INFO L158 Benchmark]: TraceAbstraction took 26053.41ms. Allocated memory was 73.4MB in the beginning and 463.5MB in the end (delta: 390.1MB). Free memory was 32.6MB in the beginning and 198.0MB in the end (delta: -165.4MB). Peak memory consumption was 224.3MB. Max. memory is 16.1GB. [2023-08-29 20:32:19,903 INFO L158 Benchmark]: Witness Printer took 55.11ms. Allocated memory is still 463.5MB. Free memory was 198.0MB in the beginning and 193.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:32:19,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 50.3MB. Free memory was 28.6MB in the beginning and 28.6MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 583.26ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 37.3MB in the beginning and 49.7MB in the end (delta: -12.4MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.61ms. Allocated memory is still 73.4MB. Free memory was 49.7MB in the beginning and 46.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.06ms. Allocated memory is still 73.4MB. Free memory was 46.0MB in the beginning and 43.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 898.26ms. Allocated memory is still 73.4MB. Free memory was 43.6MB in the beginning and 33.1MB in the end (delta: 10.5MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * TraceAbstraction took 26053.41ms. Allocated memory was 73.4MB in the beginning and 463.5MB in the end (delta: 390.1MB). Free memory was 32.6MB in the beginning and 198.0MB in the end (delta: -165.4MB). Peak memory consumption was 224.3MB. Max. memory is 16.1GB. * Witness Printer took 55.11ms. Allocated memory is still 463.5MB. Free memory was 198.0MB in the beginning and 193.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 118 PlacesBefore, 33 PlacesAfterwards, 113 TransitionsBefore, 26 TransitionsAfterwards, 1460 CoEnabledTransitionPairs, 7 FixpointIterations, 63 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 114 TotalNumberOfCompositions, 4743 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1480, independent: 1278, independent conditional: 0, independent unconditional: 1278, dependent: 202, dependent conditional: 0, dependent unconditional: 202, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 745, independent: 708, independent conditional: 0, independent unconditional: 708, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1480, independent: 570, independent conditional: 0, independent unconditional: 570, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 745, unknown conditional: 0, unknown unconditional: 745] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 874]: 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, 137 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: 25.9s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 833 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 582 mSDsluCounter, 1010 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 874 mSDsCounter, 420 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2706 IncrementalHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 420 mSolverCounterUnsat, 136 mSDtfsCounter, 2706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=12, InterpolantAutomatonStates: 97, 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, 0.9s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 3409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:32:19,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE