./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_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/rfi003_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 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --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 20:32:04,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:32:04,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:32:04,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:32:04,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:32:04,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:32:04,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:32:04,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:32:04,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:32:04,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:32:04,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:32:04,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:32:04,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:32:04,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:32:04,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:32:04,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:32:04,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:32:04,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:32:04,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:32:04,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:32:04,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:32:04,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:32:04,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:32:04,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:32:04,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:32:04,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:32:04,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:32:04,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:32:04,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:32:04,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:32:04,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:32:04,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:32:04,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:32:04,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:32:04,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:32:04,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:32:04,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:32:04,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:32:04,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:32:04,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:32:04,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:32:04,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:32:04,110 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:32:04,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:32:04,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:32:04,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:32:04,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:32:04,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:32:04,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:32:04,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:32:04,113 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:32:04,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:32:04,114 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:32:04,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:32:04,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:32:04,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:32:04,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:32:04,114 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:32:04,114 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:32:04,115 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:32:04,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:32:04,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:32:04,115 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:32:04,115 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:32:04,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:32:04,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:32:04,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:32:04,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:32:04,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:32:04,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:32:04,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:32:04,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:32:04,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:32:04,116 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:32:04,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:32:04,117 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:32:04,117 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:32:04,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:32:04,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:32:04,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:32:04,380 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:32:04,380 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:32:04,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-08-29 20:32:05,485 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:32:05,716 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:32:05,716 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-08-29 20:32:05,733 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3b862ad/ceb9f275ec2e442e8abe48aeb5fc195a/FLAG4c0f837c1 [2023-08-29 20:32:05,745 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3b862ad/ceb9f275ec2e442e8abe48aeb5fc195a [2023-08-29 20:32:05,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:32:05,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:32:05,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:32:05,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:32:05,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:32:05,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:32:05" (1/1) ... [2023-08-29 20:32:05,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae04351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:05, skipping insertion in model container [2023-08-29 20:32:05,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:32:05" (1/1) ... [2023-08-29 20:32:05,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:32:05,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:32:05,939 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/rfi003_tso.i[944,957] [2023-08-29 20:32:06,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:32:06,145 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:32:06,153 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/rfi003_tso.i[944,957] [2023-08-29 20:32:06,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:32:06,233 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:32:06,233 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:32:06,238 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:32:06,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06 WrapperNode [2023-08-29 20:32:06,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:32:06,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:32:06,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:32:06,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:32:06,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,305 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2023-08-29 20:32:06,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:32:06,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:32:06,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:32:06,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:32:06,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,332 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:32:06,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:32:06,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:32:06,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:32:06,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (1/1) ... [2023-08-29 20:32:06,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:32:06,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:32:06,380 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 20:32:06,412 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 20:32:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:32:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:32:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:32:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:32:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:32:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:32:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:32:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:32:06,434 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:32:06,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:32:06,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:32:06,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:32:06,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:32:06,436 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 20:32:06,522 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:32:06,523 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:32:06,878 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:32:07,019 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:32:07,019 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:32:07,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:32:07 BoogieIcfgContainer [2023-08-29 20:32:07,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:32:07,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:32:07,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:32:07,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:32:07,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:32:05" (1/3) ... [2023-08-29 20:32:07,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd0359f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:32:07, skipping insertion in model container [2023-08-29 20:32:07,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:32:06" (2/3) ... [2023-08-29 20:32:07,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd0359f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:32:07, skipping insertion in model container [2023-08-29 20:32:07,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:32:07" (3/3) ... [2023-08-29 20:32:07,026 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2023-08-29 20:32:07,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:32:07,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-29 20:32:07,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:32:07,073 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:32:07,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 210 flow [2023-08-29 20:32:07,131 INFO L130 PetriNetUnfolder]: 2/98 cut-off events. [2023-08-29 20:32:07,131 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:32:07,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 98 events. 2/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-29 20:32:07,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 100 transitions, 210 flow [2023-08-29 20:32:07,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 98 transitions, 202 flow [2023-08-29 20:32:07,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:32:07,144 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 98 transitions, 202 flow [2023-08-29 20:32:07,146 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 98 transitions, 202 flow [2023-08-29 20:32:07,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 202 flow [2023-08-29 20:32:07,162 INFO L130 PetriNetUnfolder]: 2/98 cut-off events. [2023-08-29 20:32:07,162 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:32:07,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 98 events. 2/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-29 20:32:07,163 INFO L119 LiptonReduction]: Number of co-enabled transitions 1384 [2023-08-29 20:32:10,796 INFO L134 LiptonReduction]: Checked pairs total: 4430 [2023-08-29 20:32:10,796 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-29 20:32:10,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:32:10,820 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;@40530f41, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:32:10,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-29 20:32:10,821 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:32:10,822 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:32:10,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:10,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:32:10,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:10,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash 528, now seen corresponding path program 1 times [2023-08-29 20:32:10,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:10,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513566494] [2023-08-29 20:32:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:10,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:10,944 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 20:32:10,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513566494] [2023-08-29 20:32:10,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513566494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:10,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:10,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:32:10,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091195866] [2023-08-29 20:32:10,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:10,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:32:10,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:10,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:32:10,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:32:10,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 199 [2023-08-29 20:32:10,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 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 20:32:10,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:10,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 199 [2023-08-29 20:32:10,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:11,154 INFO L130 PetriNetUnfolder]: 371/624 cut-off events. [2023-08-29 20:32:11,155 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 20:32:11,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 624 events. 371/624 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2531 event pairs, 371 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 1252. Up to 623 conditions per place. [2023-08-29 20:32:11,159 INFO L137 encePairwiseOnDemand]: 195/199 looper letters, 20 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-29 20:32:11,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 88 flow [2023-08-29 20:32:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:32:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:32:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2023-08-29 20:32:11,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49246231155778897 [2023-08-29 20:32:11,169 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2023-08-29 20:32:11,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2023-08-29 20:32:11,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:11,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2023-08-29 20:32:11,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 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 20:32:11,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 20:32:11,177 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 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 20:32:11,179 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 2 states and 196 transitions. [2023-08-29 20:32:11,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 88 flow [2023-08-29 20:32:11,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:11,182 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 46 flow [2023-08-29 20:32:11,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-08-29 20:32:11,186 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-08-29 20:32:11,186 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 46 flow [2023-08-29 20:32:11,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 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 20:32:11,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:11,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 20:32:11,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:32:11,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:11,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1736920668, now seen corresponding path program 1 times [2023-08-29 20:32:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:11,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687319089] [2023-08-29 20:32:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:11,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:11,423 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 20:32:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687319089] [2023-08-29 20:32:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687319089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:11,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:11,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:32:11,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180981146] [2023-08-29 20:32:11,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:11,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:32:11,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:32:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:32:11,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 199 [2023-08-29 20:32:11,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 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 20:32:11,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:11,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 199 [2023-08-29 20:32:11,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:11,567 INFO L130 PetriNetUnfolder]: 322/545 cut-off events. [2023-08-29 20:32:11,567 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:32:11,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 545 events. 322/545 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2227 event pairs, 77 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 1100. Up to 396 conditions per place. [2023-08-29 20:32:11,570 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 24 selfloop transitions, 2 changer transitions 2/29 dead transitions. [2023-08-29 20:32:11,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 118 flow [2023-08-29 20:32:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:32:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:32:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-08-29 20:32:11,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47571189279731996 [2023-08-29 20:32:11,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-08-29 20:32:11,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-08-29 20:32:11,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:11,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-08-29 20:32:11,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 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 20:32:11,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 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 20:32:11,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 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 20:32:11,575 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 46 flow. Second operand 3 states and 284 transitions. [2023-08-29 20:32:11,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 118 flow [2023-08-29 20:32:11,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:32:11,576 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2023-08-29 20:32:11,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, 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 20:32:11,577 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2023-08-29 20:32:11,577 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2023-08-29 20:32:11,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 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 20:32:11,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:11,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:11,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:32:11,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:11,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:11,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1990071156, now seen corresponding path program 1 times [2023-08-29 20:32:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770962554] [2023-08-29 20:32:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:11,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:11,918 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 20:32:11,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:11,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770962554] [2023-08-29 20:32:11,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770962554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:11,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:11,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:32:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690084709] [2023-08-29 20:32:11,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:11,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:32:11,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:32:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:32:11,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 199 [2023-08-29 20:32:11,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 20:32:11,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:11,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 199 [2023-08-29 20:32:11,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:12,072 INFO L130 PetriNetUnfolder]: 206/358 cut-off events. [2023-08-29 20:32:12,073 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-29 20:32:12,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 358 events. 206/358 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1288 event pairs, 90 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 748. Up to 351 conditions per place. [2023-08-29 20:32:12,075 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 19 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-29 20:32:12,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 94 flow [2023-08-29 20:32:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:32:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:32:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2023-08-29 20:32:12,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40954773869346733 [2023-08-29 20:32:12,078 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 326 transitions. [2023-08-29 20:32:12,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 326 transitions. [2023-08-29 20:32:12,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:12,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 326 transitions. [2023-08-29 20:32:12,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 20:32:12,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 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 20:32:12,083 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 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 20:32:12,083 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 4 states and 326 transitions. [2023-08-29 20:32:12,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 94 flow [2023-08-29 20:32:12,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:12,084 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2023-08-29 20:32:12,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-29 20:32:12,085 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-08-29 20:32:12,087 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2023-08-29 20:32:12,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 20:32:12,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:12,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:12,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:32:12,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:12,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:12,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1990071141, now seen corresponding path program 1 times [2023-08-29 20:32:12,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:12,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9950964] [2023-08-29 20:32:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:12,704 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 20:32:12,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9950964] [2023-08-29 20:32:12,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9950964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:12,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:12,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:32:12,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97808158] [2023-08-29 20:32:12,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:12,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:32:12,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:12,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:32:12,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:32:12,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2023-08-29 20:32:12,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 20:32:12,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:12,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2023-08-29 20:32:12,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:12,834 INFO L130 PetriNetUnfolder]: 209/366 cut-off events. [2023-08-29 20:32:12,834 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 20:32:12,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 366 events. 209/366 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1210 event pairs, 113 based on Foata normal form. 24/390 useless extension candidates. Maximal degree in co-relation 753. Up to 186 conditions per place. [2023-08-29 20:32:12,839 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-29 20:32:12,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 108 flow [2023-08-29 20:32:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:32:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:32:12,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-08-29 20:32:12,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304857621440536 [2023-08-29 20:32:12,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-08-29 20:32:12,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-08-29 20:32:12,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:12,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-08-29 20:32:12,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 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 20:32:12,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 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 20:32:12,844 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 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 20:32:12,844 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 3 states and 257 transitions. [2023-08-29 20:32:12,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 108 flow [2023-08-29 20:32:12,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:12,845 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 49 flow [2023-08-29 20:32:12,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-29 20:32:12,847 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2023-08-29 20:32:12,847 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 49 flow [2023-08-29 20:32:12,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 20:32:12,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:12,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:12,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:32:12,848 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:12,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1234244016, now seen corresponding path program 1 times [2023-08-29 20:32:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:12,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891292126] [2023-08-29 20:32:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:13,498 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 20:32:13,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:13,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891292126] [2023-08-29 20:32:13,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891292126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:13,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:13,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:32:13,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783438380] [2023-08-29 20:32:13,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:13,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:32:13,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:32:13,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:32:13,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 199 [2023-08-29 20:32:13,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 49 flow. Second operand has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 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 20:32:13,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:13,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 199 [2023-08-29 20:32:13,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:13,615 INFO L130 PetriNetUnfolder]: 174/316 cut-off events. [2023-08-29 20:32:13,615 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-29 20:32:13,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 316 events. 174/316 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1112 event pairs, 94 based on Foata normal form. 3/319 useless extension candidates. Maximal degree in co-relation 691. Up to 279 conditions per place. [2023-08-29 20:32:13,616 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 27 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2023-08-29 20:32:13,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 161 flow [2023-08-29 20:32:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:32:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:32:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2023-08-29 20:32:13,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44321608040201005 [2023-08-29 20:32:13,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2023-08-29 20:32:13,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2023-08-29 20:32:13,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:13,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2023-08-29 20:32:13,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 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 20:32:13,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 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 20:32:13,621 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 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 20:32:13,621 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 49 flow. Second operand 5 states and 441 transitions. [2023-08-29 20:32:13,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 161 flow [2023-08-29 20:32:13,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 155 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:13,623 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 98 flow [2023-08-29 20:32:13,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-29 20:32:13,623 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-08-29 20:32:13,623 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 98 flow [2023-08-29 20:32:13,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 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 20:32:13,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:13,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:13,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:32:13,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:13,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1152020856, now seen corresponding path program 2 times [2023-08-29 20:32:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:13,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246638131] [2023-08-29 20:32:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:13,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:14,221 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 20:32:14,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:14,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246638131] [2023-08-29 20:32:14,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246638131] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:14,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:14,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:32:14,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364346515] [2023-08-29 20:32:14,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:14,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:32:14,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:14,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:32:14,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:32:14,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2023-08-29 20:32:14,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 98 flow. Second operand has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:14,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:14,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2023-08-29 20:32:14,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:14,367 INFO L130 PetriNetUnfolder]: 172/313 cut-off events. [2023-08-29 20:32:14,368 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2023-08-29 20:32:14,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 313 events. 172/313 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1127 event pairs, 92 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 838. Up to 280 conditions per place. [2023-08-29 20:32:14,370 INFO L137 encePairwiseOnDemand]: 192/199 looper letters, 28 selfloop transitions, 16 changer transitions 0/45 dead transitions. [2023-08-29 20:32:14,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 259 flow [2023-08-29 20:32:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:32:14,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:32:14,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 511 transitions. [2023-08-29 20:32:14,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42797319932998323 [2023-08-29 20:32:14,372 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 511 transitions. [2023-08-29 20:32:14,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 511 transitions. [2023-08-29 20:32:14,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:14,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 511 transitions. [2023-08-29 20:32:14,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 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 20:32:14,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 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 20:32:14,376 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 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 20:32:14,376 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 98 flow. Second operand 6 states and 511 transitions. [2023-08-29 20:32:14,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 259 flow [2023-08-29 20:32:14,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:32:14,378 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 209 flow [2023-08-29 20:32:14,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-08-29 20:32:14,380 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-29 20:32:14,381 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 209 flow [2023-08-29 20:32:14,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:32:14,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:14,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:14,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:32:14,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:14,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:14,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1570567562, now seen corresponding path program 1 times [2023-08-29 20:32:14,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:14,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114485660] [2023-08-29 20:32:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:14,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:14,555 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 20:32:14,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:14,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114485660] [2023-08-29 20:32:14,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114485660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:14,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:14,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:32:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668075477] [2023-08-29 20:32:14,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:14,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:32:14,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:14,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:32:14,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:32:14,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2023-08-29 20:32:14,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 20:32:14,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:14,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2023-08-29 20:32:14,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:14,652 INFO L130 PetriNetUnfolder]: 104/216 cut-off events. [2023-08-29 20:32:14,652 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2023-08-29 20:32:14,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 216 events. 104/216 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 795 event pairs, 20 based on Foata normal form. 35/250 useless extension candidates. Maximal degree in co-relation 651. Up to 78 conditions per place. [2023-08-29 20:32:14,653 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 34 selfloop transitions, 3 changer transitions 29/67 dead transitions. [2023-08-29 20:32:14,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 459 flow [2023-08-29 20:32:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:32:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:32:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2023-08-29 20:32:14,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492462311557789 [2023-08-29 20:32:14,655 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2023-08-29 20:32:14,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2023-08-29 20:32:14,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:14,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2023-08-29 20:32:14,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 20:32:14,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 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 20:32:14,658 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 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 20:32:14,658 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 209 flow. Second operand 5 states and 447 transitions. [2023-08-29 20:32:14,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 459 flow [2023-08-29 20:32:14,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 67 transitions, 408 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-29 20:32:14,662 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 145 flow [2023-08-29 20:32:14,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2023-08-29 20:32:14,662 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2023-08-29 20:32:14,662 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 145 flow [2023-08-29 20:32:14,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 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 20:32:14,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:14,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:14,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:32:14,663 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:14,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1829374324, now seen corresponding path program 1 times [2023-08-29 20:32:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:14,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576399212] [2023-08-29 20:32:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:15,942 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 20:32:15,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576399212] [2023-08-29 20:32:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576399212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:15,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:15,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:32:15,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014902451] [2023-08-29 20:32:15,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:15,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:32:15,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:15,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:32:15,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:32:16,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2023-08-29 20:32:16,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 145 flow. Second operand has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 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 20:32:16,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:16,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2023-08-29 20:32:16,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:16,493 INFO L130 PetriNetUnfolder]: 68/161 cut-off events. [2023-08-29 20:32:16,493 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2023-08-29 20:32:16,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 161 events. 68/161 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 536 event pairs, 2 based on Foata normal form. 1/162 useless extension candidates. Maximal degree in co-relation 537. Up to 100 conditions per place. [2023-08-29 20:32:16,494 INFO L137 encePairwiseOnDemand]: 191/199 looper letters, 38 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2023-08-29 20:32:16,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 369 flow [2023-08-29 20:32:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 20:32:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 20:32:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 742 transitions. [2023-08-29 20:32:16,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41429369067560023 [2023-08-29 20:32:16,497 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 742 transitions. [2023-08-29 20:32:16,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 742 transitions. [2023-08-29 20:32:16,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:16,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 742 transitions. [2023-08-29 20:32:16,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.44444444444444) internal successors, (742), 9 states have internal predecessors, (742), 0 states have call successors, (0), 0 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 20:32:16,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 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 20:32:16,500 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 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 20:32:16,501 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 145 flow. Second operand 9 states and 742 transitions. [2023-08-29 20:32:16,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 369 flow [2023-08-29 20:32:16,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 355 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-29 20:32:16,502 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 232 flow [2023-08-29 20:32:16,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-29 20:32:16,503 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2023-08-29 20:32:16,503 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 232 flow [2023-08-29 20:32:16,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 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 20:32:16,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:16,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:16,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:32:16,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:16,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1946891106, now seen corresponding path program 2 times [2023-08-29 20:32:16,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:16,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653929254] [2023-08-29 20:32:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:16,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:17,555 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 20:32:17,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:17,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653929254] [2023-08-29 20:32:17,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653929254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:17,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:17,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:32:17,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796618461] [2023-08-29 20:32:17,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:17,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:32:17,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:17,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:32:17,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:32:17,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2023-08-29 20:32:17,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 232 flow. Second operand has 9 states, 9 states have (on average 80.55555555555556) internal successors, (725), 9 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 20:32:17,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:17,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2023-08-29 20:32:17,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:18,212 INFO L130 PetriNetUnfolder]: 92/230 cut-off events. [2023-08-29 20:32:18,212 INFO L131 PetriNetUnfolder]: For 353/353 co-relation queries the response was YES. [2023-08-29 20:32:18,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 230 events. 92/230 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 944 event pairs, 0 based on Foata normal form. 5/235 useless extension candidates. Maximal degree in co-relation 866. Up to 83 conditions per place. [2023-08-29 20:32:18,214 INFO L137 encePairwiseOnDemand]: 189/199 looper letters, 44 selfloop transitions, 26 changer transitions 8/79 dead transitions. [2023-08-29 20:32:18,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 604 flow [2023-08-29 20:32:18,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 20:32:18,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 20:32:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 933 transitions. [2023-08-29 20:32:18,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262220191868433 [2023-08-29 20:32:18,217 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 933 transitions. [2023-08-29 20:32:18,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 933 transitions. [2023-08-29 20:32:18,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:18,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 933 transitions. [2023-08-29 20:32:18,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.81818181818181) internal successors, (933), 11 states have internal predecessors, (933), 0 states have call successors, (0), 0 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 20:32:18,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 199.0) internal successors, (2388), 12 states have internal predecessors, (2388), 0 states have call successors, (0), 0 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 20:32:18,222 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 199.0) internal successors, (2388), 12 states have internal predecessors, (2388), 0 states have call successors, (0), 0 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 20:32:18,223 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 232 flow. Second operand 11 states and 933 transitions. [2023-08-29 20:32:18,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 604 flow [2023-08-29 20:32:18,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 593 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-29 20:32:18,226 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 373 flow [2023-08-29 20:32:18,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=373, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-08-29 20:32:18,227 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2023-08-29 20:32:18,227 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 373 flow [2023-08-29 20:32:18,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.55555555555556) internal successors, (725), 9 states have internal predecessors, (725), 0 states have call successors, (0), 0 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 20:32:18,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:18,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:18,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:32:18,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:18,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash -477436572, now seen corresponding path program 3 times [2023-08-29 20:32:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:18,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255698562] [2023-08-29 20:32:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:18,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:18,383 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 20:32:18,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:18,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255698562] [2023-08-29 20:32:18,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255698562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:18,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:18,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:32:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519348962] [2023-08-29 20:32:18,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:18,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:32:18,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:18,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:32:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:32:18,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2023-08-29 20:32:18,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 373 flow. Second operand has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 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 20:32:18,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:18,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2023-08-29 20:32:18,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:18,469 INFO L130 PetriNetUnfolder]: 56/148 cut-off events. [2023-08-29 20:32:18,469 INFO L131 PetriNetUnfolder]: For 368/368 co-relation queries the response was YES. [2023-08-29 20:32:18,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 148 events. 56/148 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 536 event pairs, 12 based on Foata normal form. 16/163 useless extension candidates. Maximal degree in co-relation 611. Up to 76 conditions per place. [2023-08-29 20:32:18,470 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 52 selfloop transitions, 5 changer transitions 16/74 dead transitions. [2023-08-29 20:32:18,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 662 flow [2023-08-29 20:32:18,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:32:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:32:18,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 516 transitions. [2023-08-29 20:32:18,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321608040201005 [2023-08-29 20:32:18,472 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 516 transitions. [2023-08-29 20:32:18,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 516 transitions. [2023-08-29 20:32:18,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:18,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 516 transitions. [2023-08-29 20:32:18,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 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 L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 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 20:32:18,475 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 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 20:32:18,475 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 373 flow. Second operand 6 states and 516 transitions. [2023-08-29 20:32:18,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 662 flow [2023-08-29 20:32:18,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 561 flow, removed 32 selfloop flow, removed 9 redundant places. [2023-08-29 20:32:18,478 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 271 flow [2023-08-29 20:32:18,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2023-08-29 20:32:18,479 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-08-29 20:32:18,479 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 271 flow [2023-08-29 20:32:18,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 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 20:32:18,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:18,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:18,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:32:18,480 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:18,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1021674928, now seen corresponding path program 1 times [2023-08-29 20:32:18,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:18,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065724472] [2023-08-29 20:32:18,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:18,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:19,398 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 20:32:19,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:19,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065724472] [2023-08-29 20:32:19,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065724472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:19,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:19,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 20:32:19,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831232284] [2023-08-29 20:32:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:19,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 20:32:19,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:19,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 20:32:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-29 20:32:19,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 199 [2023-08-29 20:32:19,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 271 flow. Second operand has 11 states, 11 states have (on average 79.54545454545455) internal successors, (875), 11 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 20:32:19,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:19,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 199 [2023-08-29 20:32:19,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:19,585 INFO L130 PetriNetUnfolder]: 49/137 cut-off events. [2023-08-29 20:32:19,585 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2023-08-29 20:32:19,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 137 events. 49/137 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 481 event pairs, 1 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 539. Up to 54 conditions per place. [2023-08-29 20:32:19,586 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 27 selfloop transitions, 24 changer transitions 15/67 dead transitions. [2023-08-29 20:32:19,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 553 flow [2023-08-29 20:32:19,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 20:32:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 20:32:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 749 transitions. [2023-08-29 20:32:19,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41820212171970966 [2023-08-29 20:32:19,588 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 749 transitions. [2023-08-29 20:32:19,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 749 transitions. [2023-08-29 20:32:19,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:19,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 749 transitions. [2023-08-29 20:32:19,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.22222222222223) internal successors, (749), 9 states have internal predecessors, (749), 0 states have call successors, (0), 0 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 20:32:19,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 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 20:32:19,592 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 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 20:32:19,592 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 271 flow. Second operand 9 states and 749 transitions. [2023-08-29 20:32:19,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 553 flow [2023-08-29 20:32:19,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 504 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-29 20:32:19,594 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 351 flow [2023-08-29 20:32:19,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=351, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-08-29 20:32:19,595 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-08-29 20:32:19,595 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 351 flow [2023-08-29 20:32:19,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 79.54545454545455) internal successors, (875), 11 states have internal predecessors, (875), 0 states have call successors, (0), 0 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 20:32:19,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:19,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:19,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:32:19,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:19,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1177518912, now seen corresponding path program 2 times [2023-08-29 20:32:19,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:19,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830397183] [2023-08-29 20:32:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:19,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:20,021 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 20:32:20,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:20,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830397183] [2023-08-29 20:32:20,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830397183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:20,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:20,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:32:20,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475983225] [2023-08-29 20:32:20,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:20,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:32:20,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:20,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:32:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:32:20,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 199 [2023-08-29 20:32:20,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 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 20:32:20,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:20,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 199 [2023-08-29 20:32:20,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:20,173 INFO L130 PetriNetUnfolder]: 49/134 cut-off events. [2023-08-29 20:32:20,173 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-29 20:32:20,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 134 events. 49/134 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 440 event pairs, 3 based on Foata normal form. 1/135 useless extension candidates. Maximal degree in co-relation 575. Up to 65 conditions per place. [2023-08-29 20:32:20,174 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 23 selfloop transitions, 3 changer transitions 45/71 dead transitions. [2023-08-29 20:32:20,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 629 flow [2023-08-29 20:32:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:32:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:32:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 487 transitions. [2023-08-29 20:32:20,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40787269681742044 [2023-08-29 20:32:20,176 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 487 transitions. [2023-08-29 20:32:20,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 487 transitions. [2023-08-29 20:32:20,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:20,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 487 transitions. [2023-08-29 20:32:20,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 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 20:32:20,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 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 20:32:20,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 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 20:32:20,178 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 351 flow. Second operand 6 states and 487 transitions. [2023-08-29 20:32:20,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 629 flow [2023-08-29 20:32:20,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 548 flow, removed 15 selfloop flow, removed 10 redundant places. [2023-08-29 20:32:20,180 INFO L231 Difference]: Finished difference. Result has 60 places, 24 transitions, 135 flow [2023-08-29 20:32:20,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=60, PETRI_TRANSITIONS=24} [2023-08-29 20:32:20,182 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2023-08-29 20:32:20,182 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 24 transitions, 135 flow [2023-08-29 20:32:20,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 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 20:32:20,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:32:20,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:32:20,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:32:20,183 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 20:32:20,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:32:20,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1796189684, now seen corresponding path program 3 times [2023-08-29 20:32:20,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:32:20,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675203827] [2023-08-29 20:32:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:32:20,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:32:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:32:22,400 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 20:32:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:32:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675203827] [2023-08-29 20:32:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675203827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:32:22,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:32:22,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 20:32:22,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373047778] [2023-08-29 20:32:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:32:22,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 20:32:22,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:32:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 20:32:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-29 20:32:22,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 199 [2023-08-29 20:32:22,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 24 transitions, 135 flow. Second operand has 11 states, 11 states have (on average 76.54545454545455) internal successors, (842), 11 states have internal predecessors, (842), 0 states have call successors, (0), 0 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 20:32:22,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:32:22,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 199 [2023-08-29 20:32:22,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:32:22,582 INFO L130 PetriNetUnfolder]: 11/45 cut-off events. [2023-08-29 20:32:22,582 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-08-29 20:32:22,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 45 events. 11/45 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 1 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 170. Up to 14 conditions per place. [2023-08-29 20:32:22,582 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-29 20:32:22,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 27 transitions, 199 flow [2023-08-29 20:32:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:32:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:32:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 547 transitions. [2023-08-29 20:32:22,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39267767408470927 [2023-08-29 20:32:22,584 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 547 transitions. [2023-08-29 20:32:22,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 547 transitions. [2023-08-29 20:32:22,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:32:22,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 547 transitions. [2023-08-29 20:32:22,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.14285714285714) internal successors, (547), 7 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 20:32:22,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 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 20:32:22,587 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 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 20:32:22,587 INFO L175 Difference]: Start difference. First operand has 60 places, 24 transitions, 135 flow. Second operand 7 states and 547 transitions. [2023-08-29 20:32:22,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 27 transitions, 199 flow [2023-08-29 20:32:22,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 27 transitions, 176 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-29 20:32:22,588 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-29 20:32:22,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-29 20:32:22,588 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2023-08-29 20:32:22,588 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-29 20:32:22,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 76.54545454545455) internal successors, (842), 11 states have internal predecessors, (842), 0 states have call successors, (0), 0 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 20:32:22,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-08-29 20:32:22,591 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-29 20:32:22,592 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-29 20:32:22,593 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-29 20:32:22,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-29 20:32:22,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-08-29 20:32:22,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-08-29 20:32:22,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-29 20:32:22,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-29 20:32:22,594 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-08-29 20:32:22,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 20:32:22,595 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2023-08-29 20:32:22,598 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:32:22,598 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:32:22,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:32:22 BasicIcfg [2023-08-29 20:32:22,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:32:22,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:32:22,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:32:22,601 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:32:22,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:32:07" (3/4) ... [2023-08-29 20:32:22,603 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:32:22,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:32:22,606 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:32:22,610 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-08-29 20:32:22,610 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-08-29 20:32:22,611 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:32:22,611 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:32:22,638 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:32:22,639 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:32:22,639 INFO L158 Benchmark]: Toolchain (without parser) took 16890.52ms. Allocated memory was 71.3MB in the beginning and 497.0MB in the end (delta: 425.7MB). Free memory was 46.4MB in the beginning and 217.6MB in the end (delta: -171.2MB). Peak memory consumption was 253.4MB. Max. memory is 16.1GB. [2023-08-29 20:32:22,639 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:32:22,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.24ms. Allocated memory was 71.3MB in the beginning and 107.0MB in the end (delta: 35.7MB). Free memory was 46.1MB in the beginning and 74.9MB in the end (delta: -28.7MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-08-29 20:32:22,640 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.22ms. Allocated memory is still 107.0MB. Free memory was 74.9MB in the beginning and 72.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:32:22,640 INFO L158 Benchmark]: Boogie Preprocessor took 29.45ms. Allocated memory is still 107.0MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:32:22,640 INFO L158 Benchmark]: RCFGBuilder took 684.78ms. Allocated memory is still 107.0MB. Free memory was 69.5MB in the beginning and 70.5MB in the end (delta: -1.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-08-29 20:32:22,640 INFO L158 Benchmark]: TraceAbstraction took 15578.34ms. Allocated memory was 107.0MB in the beginning and 497.0MB in the end (delta: 390.1MB). Free memory was 69.8MB in the beginning and 221.8MB in the end (delta: -152.0MB). Peak memory consumption was 239.1MB. Max. memory is 16.1GB. [2023-08-29 20:32:22,641 INFO L158 Benchmark]: Witness Printer took 37.99ms. Allocated memory is still 497.0MB. Free memory was 221.8MB in the beginning and 217.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:32:22,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 488.24ms. Allocated memory was 71.3MB in the beginning and 107.0MB in the end (delta: 35.7MB). Free memory was 46.1MB in the beginning and 74.9MB in the end (delta: -28.7MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.22ms. Allocated memory is still 107.0MB. Free memory was 74.9MB in the beginning and 72.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.45ms. Allocated memory is still 107.0MB. Free memory was 71.6MB in the beginning and 69.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 684.78ms. Allocated memory is still 107.0MB. Free memory was 69.5MB in the beginning and 70.5MB in the end (delta: -1.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 15578.34ms. Allocated memory was 107.0MB in the beginning and 497.0MB in the end (delta: 390.1MB). Free memory was 69.8MB in the beginning and 221.8MB in the end (delta: -152.0MB). Peak memory consumption was 239.1MB. Max. memory is 16.1GB. * Witness Printer took 37.99ms. Allocated memory is still 497.0MB. Free memory was 221.8MB in the beginning and 217.6MB 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: 3.7s, 103 PlacesBefore, 32 PlacesAfterwards, 98 TransitionsBefore, 25 TransitionsAfterwards, 1384 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 99 TotalNumberOfCompositions, 4430 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1849, independent: 1668, independent conditional: 0, independent unconditional: 1668, dependent: 181, dependent conditional: 0, dependent unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 745, independent: 712, independent conditional: 0, independent unconditional: 712, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1849, independent: 956, independent conditional: 0, independent unconditional: 956, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 745, unknown conditional: 0, unknown unconditional: 745] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, 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: 18]: 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 833]: 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, 121 locations, 10 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: 15.5s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 507 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 356 mSDsluCounter, 417 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1807 IncrementalHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 98 mSDtfsCounter, 1807 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=9, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 2608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:32:22,673 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