./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_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 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:44:49,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:44:49,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:44:49,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:44:49,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:44:49,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:44:49,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:44:49,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:44:49,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:44:49,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:44:49,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:44:49,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:44:49,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:44:49,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:44:49,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:44:49,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:44:49,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:44:49,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:44:49,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:44:49,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:44:49,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:44:49,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:44:49,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:44:49,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:44:49,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:44:49,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:44:49,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:44:49,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:44:49,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:44:49,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:44:49,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:44:49,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:44:49,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:44:49,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:44:49,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:44:49,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:44:49,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:44:49,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:44:49,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:44:49,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:44:49,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:44:49,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:44:49,387 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:44:49,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:44:49,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:44:49,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:44:49,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:44:49,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:44:49,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:44:49,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:44:49,390 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:44:49,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:44:49,390 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:44:49,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:44:49,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:44:49,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:44:49,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:44:49,391 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:44:49,391 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:44:49,391 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:44:49,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:44:49,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:44:49,392 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:44:49,392 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:44:49,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:44:49,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:44:49,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:44:49,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:44:49,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:44:49,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:44:49,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:44:49,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:44:49,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:44:49,393 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:44:49,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:44:49,394 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:44:49,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:44:49,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:44:49,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:44:49,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:44:49,601 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:44:49,602 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:44:49,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2023-08-31 23:44:50,538 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:44:50,705 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:44:50,705 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2023-08-31 23:44:50,715 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8f2e148/60c763068c454043aef35673920e9232/FLAG2fdadaf8e [2023-08-31 23:44:50,723 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8f2e148/60c763068c454043aef35673920e9232 [2023-08-31 23:44:50,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:44:50,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:44:50,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:44:50,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:44:50,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:44:50,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:44:50" (1/1) ... [2023-08-31 23:44:50,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c5a033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:50, skipping insertion in model container [2023-08-31 23:44:50,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:44:50" (1/1) ... [2023-08-31 23:44:50,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:44:50,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:44:50,892 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/safe031_tso.i[945,958] [2023-08-31 23:44:51,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:44:51,039 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:44:51,048 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/safe031_tso.i[945,958] [2023-08-31 23:44:51,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:44:51,120 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:44:51,121 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:44:51,125 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:44:51,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51 WrapperNode [2023-08-31 23:44:51,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:44:51,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:44:51,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:44:51,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:44:51,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,170 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-31 23:44:51,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:44:51,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:44:51,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:44:51,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:44:51,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,206 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:44:51,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:44:51,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:44:51,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:44:51,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (1/1) ... [2023-08-31 23:44:51,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:44:51,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:44:51,233 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) [2023-08-31 23:44:51,252 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 [2023-08-31 23:44:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:44:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:44:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:44:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:44:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:44:51,262 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:44:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:44:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:44:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:44:51,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:44:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:44:51,264 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:44:51,400 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:44:51,402 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:44:51,532 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:44:51,538 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:44:51,538 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:44:51,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:44:51 BoogieIcfgContainer [2023-08-31 23:44:51,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:44:51,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:44:51,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:44:51,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:44:51,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:44:50" (1/3) ... [2023-08-31 23:44:51,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cf93f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:44:51, skipping insertion in model container [2023-08-31 23:44:51,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:44:51" (2/3) ... [2023-08-31 23:44:51,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cf93f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:44:51, skipping insertion in model container [2023-08-31 23:44:51,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:44:51" (3/3) ... [2023-08-31 23:44:51,546 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2023-08-31 23:44:51,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:44:51,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:44:51,557 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:44:51,593 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:44:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:44:51,660 INFO L130 PetriNetUnfolder]: 2/91 cut-off events. [2023-08-31 23:44:51,660 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:44:51,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-31 23:44:51,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:44:51,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 87 transitions, 183 flow [2023-08-31 23:44:51,668 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:44:51,682 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:44:51,684 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:44:51,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 183 flow [2023-08-31 23:44:51,697 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-08-31 23:44:51,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:44:51,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-31 23:44:51,703 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-31 23:44:53,447 INFO L134 LiptonReduction]: Checked pairs total: 2861 [2023-08-31 23:44:53,447 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-31 23:44:53,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:44:53,460 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;@38aa3129, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:44:53,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:44:53,461 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:44:53,461 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:44:53,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:53,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:44:53,462 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:53,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 331, now seen corresponding path program 1 times [2023-08-31 23:44:53,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:53,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691976581] [2023-08-31 23:44:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:53,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:53,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691976581] [2023-08-31 23:44:53,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691976581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:53,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:53,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:44:53,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328689779] [2023-08-31 23:44:53,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:53,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:44:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:44:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:44:53,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 181 [2023-08-31 23:44:53,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:53,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:53,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 181 [2023-08-31 23:44:53,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:53,668 INFO L130 PetriNetUnfolder]: 272/455 cut-off events. [2023-08-31 23:44:53,668 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:44:53,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 455 events. 272/455 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1986 event pairs, 272 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 907. Up to 433 conditions per place. [2023-08-31 23:44:53,673 INFO L137 encePairwiseOnDemand]: 174/181 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-31 23:44:53,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-08-31 23:44:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:44:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:44:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 199 transitions. [2023-08-31 23:44:53,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497237569060773 [2023-08-31 23:44:53,685 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 199 transitions. [2023-08-31 23:44:53,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 199 transitions. [2023-08-31 23:44:53,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:53,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 199 transitions. [2023-08-31 23:44:53,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.5) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:53,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:53,697 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:53,698 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 199 transitions. [2023-08-31 23:44:53,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-08-31 23:44:53,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:44:53,700 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-08-31 23:44:53,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-31 23:44:53,703 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-31 23:44:53,703 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-08-31 23:44:53,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:53,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:53,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:53,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:44:53,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:53,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:53,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1963678994, now seen corresponding path program 1 times [2023-08-31 23:44:53,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:53,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059618424] [2023-08-31 23:44:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:54,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:54,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059618424] [2023-08-31 23:44:54,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059618424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:54,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:54,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:44:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799068541] [2023-08-31 23:44:54,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:54,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:54,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:54,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 181 [2023-08-31 23:44:54,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:54,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 181 [2023-08-31 23:44:54,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:54,212 INFO L130 PetriNetUnfolder]: 218/372 cut-off events. [2023-08-31 23:44:54,212 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:44:54,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 372 events. 218/372 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1547 event pairs, 57 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 749. Up to 327 conditions per place. [2023-08-31 23:44:54,216 INFO L137 encePairwiseOnDemand]: 177/181 looper letters, 18 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-08-31 23:44:54,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 96 flow [2023-08-31 23:44:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-08-31 23:44:54,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276243093922652 [2023-08-31 23:44:54,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-08-31 23:44:54,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-08-31 23:44:54,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:54,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-08-31 23:44:54,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,225 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 5 states and 387 transitions. [2023-08-31 23:44:54,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 96 flow [2023-08-31 23:44:54,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:44:54,226 INFO L231 Difference]: Finished difference. Result has 30 places, 18 transitions, 48 flow [2023-08-31 23:44:54,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=48, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2023-08-31 23:44:54,227 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2023-08-31 23:44:54,227 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 48 flow [2023-08-31 23:44:54,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:54,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:54,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:44:54,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:54,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:54,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1963678960, now seen corresponding path program 1 times [2023-08-31 23:44:54,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:54,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995388436] [2023-08-31 23:44:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:54,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:54,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:54,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995388436] [2023-08-31 23:44:54,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995388436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:54,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:54,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:44:54,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366954098] [2023-08-31 23:44:54,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:54,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:44:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:44:54,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:44:54,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-08-31 23:44:54,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:54,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-08-31 23:44:54,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:54,575 INFO L130 PetriNetUnfolder]: 952/1507 cut-off events. [2023-08-31 23:44:54,575 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-31 23:44:54,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3099 conditions, 1507 events. 952/1507 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7299 event pairs, 283 based on Foata normal form. 102/1609 useless extension candidates. Maximal degree in co-relation 3095. Up to 705 conditions per place. [2023-08-31 23:44:54,582 INFO L137 encePairwiseOnDemand]: 173/181 looper letters, 27 selfloop transitions, 6 changer transitions 19/52 dead transitions. [2023-08-31 23:44:54,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 52 transitions, 228 flow [2023-08-31 23:44:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2023-08-31 23:44:54,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49613259668508286 [2023-08-31 23:44:54,583 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2023-08-31 23:44:54,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2023-08-31 23:44:54,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:54,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2023-08-31 23:44:54,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,586 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,586 INFO L175 Difference]: Start difference. First operand has 30 places, 18 transitions, 48 flow. Second operand 5 states and 449 transitions. [2023-08-31 23:44:54,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 52 transitions, 228 flow [2023-08-31 23:44:54,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 52 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:44:54,587 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 103 flow [2023-08-31 23:44:54,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-31 23:44:54,588 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-31 23:44:54,590 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 103 flow [2023-08-31 23:44:54,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:54,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:54,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:44:54,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:54,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:54,591 INFO L85 PathProgramCache]: Analyzing trace with hash 744473770, now seen corresponding path program 1 times [2023-08-31 23:44:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:54,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968257782] [2023-08-31 23:44:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:54,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:54,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968257782] [2023-08-31 23:44:54,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968257782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:54,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:54,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:44:54,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509597991] [2023-08-31 23:44:54,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:54,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:44:54,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:54,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:44:54,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:44:54,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 181 [2023-08-31 23:44:54,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:54,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 181 [2023-08-31 23:44:54,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:54,828 INFO L130 PetriNetUnfolder]: 627/1096 cut-off events. [2023-08-31 23:44:54,828 INFO L131 PetriNetUnfolder]: For 917/941 co-relation queries the response was YES. [2023-08-31 23:44:54,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3119 conditions, 1096 events. 627/1096 cut-off events. For 917/941 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5737 event pairs, 233 based on Foata normal form. 74/1152 useless extension candidates. Maximal degree in co-relation 3112. Up to 771 conditions per place. [2023-08-31 23:44:54,834 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 24 selfloop transitions, 5 changer transitions 13/46 dead transitions. [2023-08-31 23:44:54,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 282 flow [2023-08-31 23:44:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:54,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2023-08-31 23:44:54,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049723756906077 [2023-08-31 23:44:54,837 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2023-08-31 23:44:54,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2023-08-31 23:44:54,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:54,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2023-08-31 23:44:54,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,840 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,840 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 103 flow. Second operand 5 states and 457 transitions. [2023-08-31 23:44:54,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 282 flow [2023-08-31 23:44:54,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:44:54,847 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 144 flow [2023-08-31 23:44:54,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-08-31 23:44:54,848 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-31 23:44:54,848 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 144 flow [2023-08-31 23:44:54,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:54,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:54,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:44:54,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:54,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash 744470887, now seen corresponding path program 1 times [2023-08-31 23:44:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:54,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411737789] [2023-08-31 23:44:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:54,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:54,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411737789] [2023-08-31 23:44:54,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411737789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:54,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:54,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:44:54,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224397006] [2023-08-31 23:44:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:54,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:44:54,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:54,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:44:54,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:44:54,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 181 [2023-08-31 23:44:54,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:54,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:54,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 181 [2023-08-31 23:44:54,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:55,060 INFO L130 PetriNetUnfolder]: 622/1083 cut-off events. [2023-08-31 23:44:55,061 INFO L131 PetriNetUnfolder]: For 1952/1956 co-relation queries the response was YES. [2023-08-31 23:44:55,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 1083 events. 622/1083 cut-off events. For 1952/1956 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5393 event pairs, 215 based on Foata normal form. 75/1148 useless extension candidates. Maximal degree in co-relation 3199. Up to 766 conditions per place. [2023-08-31 23:44:55,067 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 27 selfloop transitions, 5 changer transitions 14/52 dead transitions. [2023-08-31 23:44:55,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 327 flow [2023-08-31 23:44:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2023-08-31 23:44:55,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507182320441989 [2023-08-31 23:44:55,068 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 459 transitions. [2023-08-31 23:44:55,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 459 transitions. [2023-08-31 23:44:55,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:55,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 459 transitions. [2023-08-31 23:44:55,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,071 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,072 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 144 flow. Second operand 5 states and 459 transitions. [2023-08-31 23:44:55,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 327 flow [2023-08-31 23:44:55,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 314 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 23:44:55,076 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 180 flow [2023-08-31 23:44:55,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-31 23:44:55,078 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-31 23:44:55,078 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 180 flow [2023-08-31 23:44:55,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:55,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:55,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:44:55,078 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:55,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:55,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1603815661, now seen corresponding path program 1 times [2023-08-31 23:44:55,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:55,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382548845] [2023-08-31 23:44:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:55,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:55,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:55,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382548845] [2023-08-31 23:44:55,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382548845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:55,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:55,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:44:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316455259] [2023-08-31 23:44:55,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:55,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:44:55,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:44:55,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:44:55,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-08-31 23:44:55,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:55,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-08-31 23:44:55,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:55,294 INFO L130 PetriNetUnfolder]: 375/705 cut-off events. [2023-08-31 23:44:55,294 INFO L131 PetriNetUnfolder]: For 1571/1659 co-relation queries the response was YES. [2023-08-31 23:44:55,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 705 events. 375/705 cut-off events. For 1571/1659 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3696 event pairs, 85 based on Foata normal form. 62/740 useless extension candidates. Maximal degree in co-relation 2259. Up to 418 conditions per place. [2023-08-31 23:44:55,298 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 44 selfloop transitions, 8 changer transitions 4/66 dead transitions. [2023-08-31 23:44:55,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 475 flow [2023-08-31 23:44:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-08-31 23:44:55,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027624309392266 [2023-08-31 23:44:55,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-08-31 23:44:55,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-08-31 23:44:55,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:55,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-08-31 23:44:55,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,302 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 180 flow. Second operand 5 states and 455 transitions. [2023-08-31 23:44:55,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 475 flow [2023-08-31 23:44:55,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 452 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-31 23:44:55,305 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 229 flow [2023-08-31 23:44:55,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-31 23:44:55,306 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-31 23:44:55,306 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 229 flow [2023-08-31 23:44:55,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:55,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:55,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:44:55,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:55,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:55,307 INFO L85 PathProgramCache]: Analyzing trace with hash -757907696, now seen corresponding path program 1 times [2023-08-31 23:44:55,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:55,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616993600] [2023-08-31 23:44:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:55,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:55,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:55,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616993600] [2023-08-31 23:44:55,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616993600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:55,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:55,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:44:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935241046] [2023-08-31 23:44:55,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:55,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:55,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:55,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:55,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:55,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-08-31 23:44:55,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:55,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-08-31 23:44:55,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:55,494 INFO L130 PetriNetUnfolder]: 285/572 cut-off events. [2023-08-31 23:44:55,494 INFO L131 PetriNetUnfolder]: For 1468/1659 co-relation queries the response was YES. [2023-08-31 23:44:55,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 572 events. 285/572 cut-off events. For 1468/1659 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3081 event pairs, 26 based on Foata normal form. 126/673 useless extension candidates. Maximal degree in co-relation 2199. Up to 256 conditions per place. [2023-08-31 23:44:55,497 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 48 selfloop transitions, 15 changer transitions 10/83 dead transitions. [2023-08-31 23:44:55,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 83 transitions, 639 flow [2023-08-31 23:44:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:44:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:44:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 636 transitions. [2023-08-31 23:44:55,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019731649565904 [2023-08-31 23:44:55,499 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 636 transitions. [2023-08-31 23:44:55,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 636 transitions. [2023-08-31 23:44:55,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:55,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 636 transitions. [2023-08-31 23:44:55,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.85714285714286) internal successors, (636), 7 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,502 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,502 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 229 flow. Second operand 7 states and 636 transitions. [2023-08-31 23:44:55,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 83 transitions, 639 flow [2023-08-31 23:44:55,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 83 transitions, 633 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 23:44:55,505 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 322 flow [2023-08-31 23:44:55,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=322, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-08-31 23:44:55,506 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-08-31 23:44:55,506 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 322 flow [2023-08-31 23:44:55,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:55,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:55,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:44:55,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:55,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1045786567, now seen corresponding path program 1 times [2023-08-31 23:44:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125367617] [2023-08-31 23:44:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:55,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:55,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:55,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125367617] [2023-08-31 23:44:55,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125367617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:55,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:55,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:44:55,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087025265] [2023-08-31 23:44:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:55,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:55,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:55,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-08-31 23:44:55,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:55,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-08-31 23:44:55,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:55,716 INFO L130 PetriNetUnfolder]: 551/1026 cut-off events. [2023-08-31 23:44:55,716 INFO L131 PetriNetUnfolder]: For 3529/3529 co-relation queries the response was YES. [2023-08-31 23:44:55,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4729 conditions, 1026 events. 551/1026 cut-off events. For 3529/3529 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5509 event pairs, 91 based on Foata normal form. 12/1038 useless extension candidates. Maximal degree in co-relation 4712. Up to 436 conditions per place. [2023-08-31 23:44:55,721 INFO L137 encePairwiseOnDemand]: 173/181 looper letters, 45 selfloop transitions, 12 changer transitions 46/103 dead transitions. [2023-08-31 23:44:55,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 103 transitions, 978 flow [2023-08-31 23:44:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:44:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:44:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 608 transitions. [2023-08-31 23:44:55,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47987371744277824 [2023-08-31 23:44:55,722 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 608 transitions. [2023-08-31 23:44:55,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 608 transitions. [2023-08-31 23:44:55,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:55,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 608 transitions. [2023-08-31 23:44:55,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,725 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 322 flow. Second operand 7 states and 608 transitions. [2023-08-31 23:44:55,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 103 transitions, 978 flow [2023-08-31 23:44:55,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 103 transitions, 867 flow, removed 43 selfloop flow, removed 3 redundant places. [2023-08-31 23:44:55,738 INFO L231 Difference]: Finished difference. Result has 60 places, 35 transitions, 266 flow [2023-08-31 23:44:55,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=60, PETRI_TRANSITIONS=35} [2023-08-31 23:44:55,739 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2023-08-31 23:44:55,739 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 35 transitions, 266 flow [2023-08-31 23:44:55,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:55,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:55,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:44:55,739 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:55,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash 734137376, now seen corresponding path program 1 times [2023-08-31 23:44:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:55,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318400109] [2023-08-31 23:44:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:55,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:55,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:55,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318400109] [2023-08-31 23:44:55,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318400109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:55,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:55,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:44:55,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120734249] [2023-08-31 23:44:55,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:55,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:55,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:55,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:55,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:55,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 181 [2023-08-31 23:44:55,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 35 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:55,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 181 [2023-08-31 23:44:55,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:55,915 INFO L130 PetriNetUnfolder]: 249/525 cut-off events. [2023-08-31 23:44:55,915 INFO L131 PetriNetUnfolder]: For 1721/1721 co-relation queries the response was YES. [2023-08-31 23:44:55,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2384 conditions, 525 events. 249/525 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2531 event pairs, 43 based on Foata normal form. 8/533 useless extension candidates. Maximal degree in co-relation 2362. Up to 266 conditions per place. [2023-08-31 23:44:55,918 INFO L137 encePairwiseOnDemand]: 173/181 looper letters, 42 selfloop transitions, 11 changer transitions 17/70 dead transitions. [2023-08-31 23:44:55,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 643 flow [2023-08-31 23:44:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2023-08-31 23:44:55,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895027624309392 [2023-08-31 23:44:55,919 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2023-08-31 23:44:55,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2023-08-31 23:44:55,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:55,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2023-08-31 23:44:55,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,921 INFO L175 Difference]: Start difference. First operand has 60 places, 35 transitions, 266 flow. Second operand 5 states and 443 transitions. [2023-08-31 23:44:55,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 643 flow [2023-08-31 23:44:55,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 607 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-31 23:44:55,926 INFO L231 Difference]: Finished difference. Result has 53 places, 33 transitions, 262 flow [2023-08-31 23:44:55,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=53, PETRI_TRANSITIONS=33} [2023-08-31 23:44:55,927 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2023-08-31 23:44:55,927 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 33 transitions, 262 flow [2023-08-31 23:44:55,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:55,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:55,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:55,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:44:55,928 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:55,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:55,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2105596758, now seen corresponding path program 2 times [2023-08-31 23:44:55,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:55,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102187636] [2023-08-31 23:44:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:55,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:56,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:56,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102187636] [2023-08-31 23:44:56,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102187636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:56,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:56,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:44:56,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268858299] [2023-08-31 23:44:56,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:56,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:44:56,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:56,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:44:56,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:44:56,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-08-31 23:44:56,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 33 transitions, 262 flow. Second operand has 6 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) [2023-08-31 23:44:56,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:56,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-08-31 23:44:56,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:56,174 INFO L130 PetriNetUnfolder]: 119/291 cut-off events. [2023-08-31 23:44:56,174 INFO L131 PetriNetUnfolder]: For 921/972 co-relation queries the response was YES. [2023-08-31 23:44:56,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 291 events. 119/291 cut-off events. For 921/972 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1436 event pairs, 17 based on Foata normal form. 30/308 useless extension candidates. Maximal degree in co-relation 1267. Up to 102 conditions per place. [2023-08-31 23:44:56,175 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 16 selfloop transitions, 10 changer transitions 28/57 dead transitions. [2023-08-31 23:44:56,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 524 flow [2023-08-31 23:44:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:44:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:44:56,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 623 transitions. [2023-08-31 23:44:56,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49171270718232046 [2023-08-31 23:44:56,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 623 transitions. [2023-08-31 23:44:56,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 623 transitions. [2023-08-31 23:44:56,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:56,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 623 transitions. [2023-08-31 23:44:56,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:56,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:56,181 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:56,181 INFO L175 Difference]: Start difference. First operand has 53 places, 33 transitions, 262 flow. Second operand 7 states and 623 transitions. [2023-08-31 23:44:56,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 524 flow [2023-08-31 23:44:56,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 448 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-08-31 23:44:56,184 INFO L231 Difference]: Finished difference. Result has 55 places, 24 transitions, 173 flow [2023-08-31 23:44:56,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=24} [2023-08-31 23:44:56,185 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-08-31 23:44:56,185 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 24 transitions, 173 flow [2023-08-31 23:44:56,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2023-08-31 23:44:56,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:44:56,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:56,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:44:56,186 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:44:56,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:44:56,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2028525378, now seen corresponding path program 1 times [2023-08-31 23:44:56,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:44:56,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464691097] [2023-08-31 23:44:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:44:56,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:44:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:44:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:44:56,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:44:56,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464691097] [2023-08-31 23:44:56,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464691097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:44:56,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:44:56,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:44:56,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466343244] [2023-08-31 23:44:56,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:44:56,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:44:56,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:44:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:44:56,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:44:56,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 181 [2023-08-31 23:44:56,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 24 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:56,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:44:56,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 181 [2023-08-31 23:44:56,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:44:56,320 INFO L130 PetriNetUnfolder]: 18/53 cut-off events. [2023-08-31 23:44:56,320 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2023-08-31 23:44:56,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 53 events. 18/53 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 4 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 243. Up to 24 conditions per place. [2023-08-31 23:44:56,320 INFO L137 encePairwiseOnDemand]: 177/181 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-31 23:44:56,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 29 transitions, 264 flow [2023-08-31 23:44:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:44:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:44:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-08-31 23:44:56,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48066298342541436 [2023-08-31 23:44:56,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-08-31 23:44:56,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-08-31 23:44:56,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:44:56,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-08-31 23:44:56,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:56,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:56,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:56,324 INFO L175 Difference]: Start difference. First operand has 55 places, 24 transitions, 173 flow. Second operand 5 states and 435 transitions. [2023-08-31 23:44:56,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 29 transitions, 264 flow [2023-08-31 23:44:56,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 178 flow, removed 15 selfloop flow, removed 19 redundant places. [2023-08-31 23:44:56,325 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-31 23:44:56,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-31 23:44:56,326 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-08-31 23:44:56,326 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-31 23:44:56,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:44:56,328 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:44:56,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:44:56,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:44:56,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:44:56,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:44:56,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:44:56,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:44:56,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:44:56,329 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:44:56,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:44:56,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:44:56,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:44:56,330 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:44:56,332 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:44:56,332 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:44:56,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:44:56 BasicIcfg [2023-08-31 23:44:56,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:44:56,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:44:56,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:44:56,334 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:44:56,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:44:51" (3/4) ... [2023-08-31 23:44:56,336 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:44:56,340 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:44:56,340 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:44:56,340 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:44:56,343 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:44:56,343 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:44:56,343 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:44:56,343 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:44:56,366 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:44:56,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:44:56,367 INFO L158 Benchmark]: Toolchain (without parser) took 5641.15ms. Allocated memory was 71.3MB in the beginning and 163.6MB in the end (delta: 92.3MB). Free memory was 46.6MB in the beginning and 119.0MB in the end (delta: -72.4MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2023-08-31 23:44:56,367 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:44:56,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.62ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 46.4MB in the beginning and 70.9MB in the end (delta: -24.5MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2023-08-31 23:44:56,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.45ms. Allocated memory is still 94.4MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:44:56,368 INFO L158 Benchmark]: Boogie Preprocessor took 36.30ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 67.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:44:56,368 INFO L158 Benchmark]: RCFGBuilder took 331.64ms. Allocated memory is still 94.4MB. Free memory was 67.6MB in the beginning and 53.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:44:56,368 INFO L158 Benchmark]: TraceAbstraction took 4792.10ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 52.4MB in the beginning and 122.1MB in the end (delta: -69.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:44:56,369 INFO L158 Benchmark]: Witness Printer took 32.51ms. Allocated memory is still 163.6MB. Free memory was 122.1MB in the beginning and 119.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:44:56,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 78.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.62ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 46.4MB in the beginning and 70.9MB in the end (delta: -24.5MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.45ms. Allocated memory is still 94.4MB. Free memory was 70.9MB in the beginning and 69.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.30ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 67.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 331.64ms. Allocated memory is still 94.4MB. Free memory was 67.6MB in the beginning and 53.3MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4792.10ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 52.4MB in the beginning and 122.1MB in the end (delta: -69.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 32.51ms. Allocated memory is still 163.6MB. Free memory was 122.1MB in the beginning and 119.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 95 PlacesBefore, 35 PlacesAfterwards, 87 TransitionsBefore, 26 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 87 TotalNumberOfCompositions, 2861 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1475, independent: 1397, independent conditional: 0, independent unconditional: 1397, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 849, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1475, independent: 583, independent conditional: 0, independent unconditional: 583, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 849, unknown conditional: 0, unknown unconditional: 849] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 117 locations, 11 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: 4.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 383 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 891 IncrementalHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 46 mSDtfsCounter, 891 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=322occurred in iteration=7, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 609 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:44:56,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE