./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 19:45:47,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:45:47,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:45:47,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:45:47,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:45:47,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:45:47,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:45:47,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:45:47,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:45:47,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:45:47,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:45:47,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:45:47,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:45:47,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:45:47,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:45:47,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:45:47,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:45:47,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:45:47,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:45:47,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:45:47,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:45:47,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:45:47,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:45:47,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:45:47,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:45:47,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:45:47,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:45:47,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:45:47,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:45:47,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:45:47,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:45:47,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:45:47,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:45:47,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:45:47,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:45:47,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:45:47,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:45:47,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:45:47,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:45:47,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:45:47,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:45:47,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 19:45:47,444 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:45:47,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:45:47,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:45:47,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:45:47,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:45:47,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:45:47,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:45:47,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:45:47,447 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:45:47,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:45:47,448 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:45:47,448 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:45:47,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:45:47,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:45:47,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:45:47,449 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:45:47,450 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:45:47,450 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:45:47,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:45:47,450 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:45:47,450 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:45:47,451 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:45:47,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:45:47,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:45:47,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:45:47,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:45:47,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:45:47,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:45:47,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 19:45:47,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 19:45:47,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:45:47,453 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:45:47,453 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:45:47,453 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:45:47,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:45:47,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:45:47,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:45:47,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:45:47,789 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:45:47,789 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:45:47,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-29 19:45:49,069 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:45:49,277 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:45:49,278 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-29 19:45:49,307 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd975d737/0b799553060d40aa9cca243c17a07654/FLAG77fcaa318 [2023-08-29 19:45:49,319 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd975d737/0b799553060d40aa9cca243c17a07654 [2023-08-29 19:45:49,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:45:49,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:45:49,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:45:49,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:45:49,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:45:49,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6045242c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49, skipping insertion in model container [2023-08-29 19:45:49,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:45:49,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:45:49,724 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/triangular-longest-2.i[30964,30977] [2023-08-29 19:45:49,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:45:49,738 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:45:49,780 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/triangular-longest-2.i[30964,30977] [2023-08-29 19:45:49,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:45:49,829 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:45:49,829 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:45:49,835 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:45:49,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49 WrapperNode [2023-08-29 19:45:49,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:45:49,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:45:49,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:45:49,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:45:49,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,873 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-29 19:45:49,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:45:49,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:45:49,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:45:49,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:45:49,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,891 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:45:49,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:45:49,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:45:49,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:45:49,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (1/1) ... [2023-08-29 19:45:49,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:45:49,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:49,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 19:45:49,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 19:45:49,961 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-29 19:45:49,961 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-29 19:45:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-29 19:45:49,962 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-29 19:45:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 19:45:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 19:45:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:45:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:45:49,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:45:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 19:45:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 19:45:49,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:45:49,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:45:49,964 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 19:45:50,128 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:45:50,141 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:45:50,275 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:45:50,280 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:45:50,281 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 19:45:50,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:45:50 BoogieIcfgContainer [2023-08-29 19:45:50,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:45:50,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:45:50,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:45:50,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:45:50,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:45:49" (1/3) ... [2023-08-29 19:45:50,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e19bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:45:50, skipping insertion in model container [2023-08-29 19:45:50,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:45:49" (2/3) ... [2023-08-29 19:45:50,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e19bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:45:50, skipping insertion in model container [2023-08-29 19:45:50,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:45:50" (3/3) ... [2023-08-29 19:45:50,290 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-08-29 19:45:50,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:45:50,306 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 19:45:50,306 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:45:50,401 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 19:45:50,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 158 flow [2023-08-29 19:45:50,495 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-29 19:45:50,495 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:50,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 19:45:50,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 158 flow [2023-08-29 19:45:50,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 72 transitions, 150 flow [2023-08-29 19:45:50,509 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:45:50,521 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-29 19:45:50,527 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 72 transitions, 150 flow [2023-08-29 19:45:50,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 72 transitions, 150 flow [2023-08-29 19:45:50,556 INFO L130 PetriNetUnfolder]: 5/72 cut-off events. [2023-08-29 19:45:50,556 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:50,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 72 events. 5/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 19:45:50,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-29 19:45:52,814 INFO L134 LiptonReduction]: Checked pairs total: 1104 [2023-08-29 19:45:52,815 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-29 19:45:52,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:45:52,831 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;@4f5f1ecb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:45:52,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-29 19:45:52,833 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:45:52,833 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:52,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:52,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:45:52,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:52,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash 294, now seen corresponding path program 1 times [2023-08-29 19:45:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:52,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808861113] [2023-08-29 19:45:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808861113] [2023-08-29 19:45:52,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808861113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:52,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:52,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:45:52,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236238392] [2023-08-29 19:45:52,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:52,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:45:52,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:52,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:45:52,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:45:52,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 144 [2023-08-29 19:45:52,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:52,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:52,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 144 [2023-08-29 19:45:53,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:53,046 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2023-08-29 19:45:53,047 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 19:45:53,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-08-29 19:45:53,049 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-08-29 19:45:53,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-29 19:45:53,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:45:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:45:53,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2023-08-29 19:45:53,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-08-29 19:45:53,061 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 156 transitions. [2023-08-29 19:45:53,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 156 transitions. [2023-08-29 19:45:53,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:53,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 156 transitions. [2023-08-29 19:45:53,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,070 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,071 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 156 transitions. [2023-08-29 19:45:53,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-29 19:45:53,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:53,074 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-08-29 19:45:53,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-29 19:45:53,079 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:45:53,079 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-08-29 19:45:53,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:53,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:45:53,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 19:45:53,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:53,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash 286821, now seen corresponding path program 1 times [2023-08-29 19:45:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028000667] [2023-08-29 19:45:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:53,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:53,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028000667] [2023-08-29 19:45:53,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028000667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:53,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:53,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:45:53,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718287532] [2023-08-29 19:45:53,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:53,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:45:53,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:45:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:45:53,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 144 [2023-08-29 19:45:53,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:53,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 144 [2023-08-29 19:45:53,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:53,345 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2023-08-29 19:45:53,345 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:53,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 348 event pairs, 46 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 119 conditions per place. [2023-08-29 19:45:53,346 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-29 19:45:53,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-08-29 19:45:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:45:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:45:53,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2023-08-29 19:45:53,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-08-29 19:45:53,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 214 transitions. [2023-08-29 19:45:53,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 214 transitions. [2023-08-29 19:45:53,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:53,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 214 transitions. [2023-08-29 19:45:53,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,352 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,353 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 214 transitions. [2023-08-29 19:45:53,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-08-29 19:45:53,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:45:53,354 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-08-29 19:45:53,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-29 19:45:53,355 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:45:53,355 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-08-29 19:45:53,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:53,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:45:53,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 19:45:53,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:53,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash 286820, now seen corresponding path program 1 times [2023-08-29 19:45:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769828629] [2023-08-29 19:45:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:53,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:53,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:53,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769828629] [2023-08-29 19:45:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769828629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:53,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:45:53,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977590783] [2023-08-29 19:45:53,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:53,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:45:53,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:53,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:45:53,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:45:53,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:53,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:53,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:53,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:53,537 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2023-08-29 19:45:53,537 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:45:53,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 325 event pairs, 32 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-08-29 19:45:53,538 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-29 19:45:53,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-08-29 19:45:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:45:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:45:53,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2023-08-29 19:45:53,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-29 19:45:53,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2023-08-29 19:45:53,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2023-08-29 19:45:53,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:53,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2023-08-29 19:45:53,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,543 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 204 transitions. [2023-08-29 19:45:53,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-08-29 19:45:53,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:53,545 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-29 19:45:53,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 19:45:53,545 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-08-29 19:45:53,546 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-29 19:45:53,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:53,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 19:45:53,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 19:45:53,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:53,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash -45115990, now seen corresponding path program 1 times [2023-08-29 19:45:53,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:53,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282806464] [2023-08-29 19:45:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:53,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:53,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282806464] [2023-08-29 19:45:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282806464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:53,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:53,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:45:53,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656993794] [2023-08-29 19:45:53,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:53,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:45:53,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:53,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:45:53,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:45:53,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:45:53,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:53,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:45:53,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:53,777 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2023-08-29 19:45:53,777 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 19:45:53,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 876 event pairs, 12 based on Foata normal form. 15/223 useless extension candidates. Maximal degree in co-relation 598. Up to 128 conditions per place. [2023-08-29 19:45:53,780 INFO L137 encePairwiseOnDemand]: 138/144 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-08-29 19:45:53,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2023-08-29 19:45:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:45:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:45:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 351 transitions. [2023-08-29 19:45:53,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2023-08-29 19:45:53,782 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 351 transitions. [2023-08-29 19:45:53,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 351 transitions. [2023-08-29 19:45:53,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:53,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 351 transitions. [2023-08-29 19:45:53,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,786 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,787 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 351 transitions. [2023-08-29 19:45:53,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2023-08-29 19:45:53,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:53,788 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2023-08-29 19:45:53,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-08-29 19:45:53,789 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-08-29 19:45:53,790 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2023-08-29 19:45:53,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:53,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:53,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 19:45:53,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:53,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:53,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1398595235, now seen corresponding path program 1 times [2023-08-29 19:45:53,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:53,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666486404] [2023-08-29 19:45:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:53,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:53,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:53,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666486404] [2023-08-29 19:45:53,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666486404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:53,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:53,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:45:53,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373570401] [2023-08-29 19:45:53,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:53,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:45:53,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:53,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:45:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:45:53,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 144 [2023-08-29 19:45:53,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:53,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:53,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 144 [2023-08-29 19:45:53,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:54,026 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2023-08-29 19:45:54,026 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-29 19:45:54,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 212 events. 130/212 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 613 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 611. Up to 143 conditions per place. [2023-08-29 19:45:54,028 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2023-08-29 19:45:54,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2023-08-29 19:45:54,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 19:45:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 19:45:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2023-08-29 19:45:54,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-29 19:45:54,030 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 256 transitions. [2023-08-29 19:45:54,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 256 transitions. [2023-08-29 19:45:54,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:54,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 256 transitions. [2023-08-29 19:45:54,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,033 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 256 transitions. [2023-08-29 19:45:54,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2023-08-29 19:45:54,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:45:54,035 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2023-08-29 19:45:54,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-29 19:45:54,036 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-29 19:45:54,036 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2023-08-29 19:45:54,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:54,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:54,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 19:45:54,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:54,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:54,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1179996120, now seen corresponding path program 1 times [2023-08-29 19:45:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471233180] [2023-08-29 19:45:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:54,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471233180] [2023-08-29 19:45:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471233180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:54,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:54,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:45:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123803859] [2023-08-29 19:45:54,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:54,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:45:54,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:54,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:45:54,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:45:54,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:54,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:54,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:54,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:54,215 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2023-08-29 19:45:54,215 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-29 19:45:54,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 157 events. 92/157 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 433 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 450. Up to 61 conditions per place. [2023-08-29 19:45:54,217 INFO L137 encePairwiseOnDemand]: 140/144 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-08-29 19:45:54,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2023-08-29 19:45:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 19:45:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 19:45:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-08-29 19:45:54,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670138888888889 [2023-08-29 19:45:54,219 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-08-29 19:45:54,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-08-29 19:45:54,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:54,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-08-29 19:45:54,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,222 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,222 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 269 transitions. [2023-08-29 19:45:54,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2023-08-29 19:45:54,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:54,224 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2023-08-29 19:45:54,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-29 19:45:54,225 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-08-29 19:45:54,225 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2023-08-29 19:45:54,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:54,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:54,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 19:45:54,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:54,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:54,227 INFO L85 PathProgramCache]: Analyzing trace with hash -407213147, now seen corresponding path program 1 times [2023-08-29 19:45:54,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:54,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111896089] [2023-08-29 19:45:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:54,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:54,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:54,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111896089] [2023-08-29 19:45:54,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111896089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:54,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:54,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:45:54,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896062012] [2023-08-29 19:45:54,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:54,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:45:54,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:54,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:45:54,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:45:54,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:54,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:54,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:54,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:54,381 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2023-08-29 19:45:54,382 INFO L131 PetriNetUnfolder]: For 288/288 co-relation queries the response was YES. [2023-08-29 19:45:54,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 229 events. 132/229 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 720 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 749. Up to 101 conditions per place. [2023-08-29 19:45:54,383 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-29 19:45:54,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2023-08-29 19:45:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:45:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:45:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 404 transitions. [2023-08-29 19:45:54,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2023-08-29 19:45:54,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 404 transitions. [2023-08-29 19:45:54,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 404 transitions. [2023-08-29 19:45:54,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:54,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 404 transitions. [2023-08-29 19:45:54,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.33333333333333) internal successors, (404), 6 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,399 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,399 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 404 transitions. [2023-08-29 19:45:54,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2023-08-29 19:45:54,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-29 19:45:54,402 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2023-08-29 19:45:54,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-29 19:45:54,402 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-08-29 19:45:54,403 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2023-08-29 19:45:54,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:54,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:54,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 19:45:54,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:54,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:54,404 INFO L85 PathProgramCache]: Analyzing trace with hash -407195477, now seen corresponding path program 2 times [2023-08-29 19:45:54,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:54,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508849580] [2023-08-29 19:45:54,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:54,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:54,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:54,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508849580] [2023-08-29 19:45:54,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508849580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:54,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:54,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:45:54,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590526539] [2023-08-29 19:45:54,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:54,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:45:54,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:54,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:45:54,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:45:54,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:54,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:54,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:54,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:54,590 INFO L130 PetriNetUnfolder]: 132/231 cut-off events. [2023-08-29 19:45:54,590 INFO L131 PetriNetUnfolder]: For 531/531 co-relation queries the response was YES. [2023-08-29 19:45:54,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 231 events. 132/231 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 761 event pairs, 31 based on Foata normal form. 10/241 useless extension candidates. Maximal degree in co-relation 879. Up to 99 conditions per place. [2023-08-29 19:45:54,592 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 15 changer transitions 8/53 dead transitions. [2023-08-29 19:45:54,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 423 flow [2023-08-29 19:45:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:45:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:45:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 469 transitions. [2023-08-29 19:45:54,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2023-08-29 19:45:54,594 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 469 transitions. [2023-08-29 19:45:54,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 469 transitions. [2023-08-29 19:45:54,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:54,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 469 transitions. [2023-08-29 19:45:54,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,597 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,597 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 7 states and 469 transitions. [2023-08-29 19:45:54,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 423 flow [2023-08-29 19:45:54,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 399 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-29 19:45:54,601 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 278 flow [2023-08-29 19:45:54,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-08-29 19:45:54,602 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2023-08-29 19:45:54,602 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 278 flow [2023-08-29 19:45:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:54,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:54,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 19:45:54,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:54,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:54,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1802518163, now seen corresponding path program 1 times [2023-08-29 19:45:54,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:54,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821589052] [2023-08-29 19:45:54,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:54,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:54,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821589052] [2023-08-29 19:45:54,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821589052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:54,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:54,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:45:54,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916257162] [2023-08-29 19:45:54,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:54,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:45:54,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:54,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:45:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:45:54,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:54,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:54,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:54,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:54,853 INFO L130 PetriNetUnfolder]: 168/295 cut-off events. [2023-08-29 19:45:54,853 INFO L131 PetriNetUnfolder]: For 1123/1123 co-relation queries the response was YES. [2023-08-29 19:45:54,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 295 events. 168/295 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1017 event pairs, 16 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1234. Up to 79 conditions per place. [2023-08-29 19:45:54,856 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 37 selfloop transitions, 22 changer transitions 3/62 dead transitions. [2023-08-29 19:45:54,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 556 flow [2023-08-29 19:45:54,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 19:45:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 19:45:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 534 transitions. [2023-08-29 19:45:54,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2023-08-29 19:45:54,858 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 534 transitions. [2023-08-29 19:45:54,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 534 transitions. [2023-08-29 19:45:54,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:54,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 534 transitions. [2023-08-29 19:45:54,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.75) internal successors, (534), 8 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,861 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 144.0) internal successors, (1296), 9 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,861 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 278 flow. Second operand 8 states and 534 transitions. [2023-08-29 19:45:54,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 556 flow [2023-08-29 19:45:54,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 524 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-29 19:45:54,867 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 390 flow [2023-08-29 19:45:54,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2023-08-29 19:45:54,868 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-08-29 19:45:54,868 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 390 flow [2023-08-29 19:45:54,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:54,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:54,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 19:45:54,869 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:54,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:54,869 INFO L85 PathProgramCache]: Analyzing trace with hash -105307223, now seen corresponding path program 2 times [2023-08-29 19:45:54,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:54,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504744124] [2023-08-29 19:45:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:54,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:54,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:54,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504744124] [2023-08-29 19:45:54,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504744124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:45:54,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:45:54,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:45:54,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995833604] [2023-08-29 19:45:54,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:45:54,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:45:54,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:54,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:45:54,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:45:54,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:54,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:54,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:54,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:54,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:55,089 INFO L130 PetriNetUnfolder]: 160/283 cut-off events. [2023-08-29 19:45:55,089 INFO L131 PetriNetUnfolder]: For 1708/1708 co-relation queries the response was YES. [2023-08-29 19:45:55,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 283 events. 160/283 cut-off events. For 1708/1708 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 988 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1348. Up to 69 conditions per place. [2023-08-29 19:45:55,091 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2023-08-29 19:45:55,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 634 flow [2023-08-29 19:45:55,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:45:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:45:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 467 transitions. [2023-08-29 19:45:55,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632936507936508 [2023-08-29 19:45:55,093 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 467 transitions. [2023-08-29 19:45:55,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 467 transitions. [2023-08-29 19:45:55,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:55,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 467 transitions. [2023-08-29 19:45:55,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,096 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,096 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 390 flow. Second operand 7 states and 467 transitions. [2023-08-29 19:45:55,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 634 flow [2023-08-29 19:45:55,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 580 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-29 19:45:55,104 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 430 flow [2023-08-29 19:45:55,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-08-29 19:45:55,104 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-29 19:45:55,104 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 430 flow [2023-08-29 19:45:55,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:55,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:55,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 19:45:55,105 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:55,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1030467307, now seen corresponding path program 3 times [2023-08-29 19:45:55,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:55,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439928507] [2023-08-29 19:45:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:55,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:55,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:55,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439928507] [2023-08-29 19:45:55,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439928507] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:55,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724498994] [2023-08-29 19:45:55,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:45:55,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:55,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:55,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:55,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 19:45:55,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 19:45:55,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:55,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 19:45:55,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:55,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:55,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724498994] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:55,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:55,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-29 19:45:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666008775] [2023-08-29 19:45:55,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:55,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:45:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:45:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:45:55,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:55,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 430 flow. Second operand has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 12 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:55,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:55,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:55,850 INFO L130 PetriNetUnfolder]: 208/363 cut-off events. [2023-08-29 19:45:55,850 INFO L131 PetriNetUnfolder]: For 2839/2839 co-relation queries the response was YES. [2023-08-29 19:45:55,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 363 events. 208/363 cut-off events. For 2839/2839 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1261 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1850. Up to 91 conditions per place. [2023-08-29 19:45:55,854 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2023-08-29 19:45:55,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 1040 flow [2023-08-29 19:45:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-29 19:45:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-29 19:45:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 928 transitions. [2023-08-29 19:45:55,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2023-08-29 19:45:55,857 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 928 transitions. [2023-08-29 19:45:55,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 928 transitions. [2023-08-29 19:45:55,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:55,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 928 transitions. [2023-08-29 19:45:55,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 66.28571428571429) internal successors, (928), 14 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 144.0) internal successors, (2160), 15 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,863 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 144.0) internal successors, (2160), 15 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,863 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 430 flow. Second operand 14 states and 928 transitions. [2023-08-29 19:45:55,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 1040 flow [2023-08-29 19:45:55,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 973 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-08-29 19:45:55,872 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 749 flow [2023-08-29 19:45:55,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=749, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-08-29 19:45:55,873 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2023-08-29 19:45:55,873 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 749 flow [2023-08-29 19:45:55,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 62.916666666666664) internal successors, (755), 12 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:55,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:55,874 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:55,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 19:45:56,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-29 19:45:56,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:56,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:56,081 INFO L85 PathProgramCache]: Analyzing trace with hash 771926841, now seen corresponding path program 4 times [2023-08-29 19:45:56,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:56,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385953649] [2023-08-29 19:45:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:56,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385953649] [2023-08-29 19:45:56,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385953649] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:56,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021284690] [2023-08-29 19:45:56,215 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:45:56,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:56,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:56,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 19:45:56,298 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:45:56,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:56,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 19:45:56,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:56,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:56,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021284690] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:56,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:56,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-29 19:45:56,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543156422] [2023-08-29 19:45:56,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:56,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-29 19:45:56,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:56,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-29 19:45:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-29 19:45:56,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:56,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 749 flow. Second operand has 16 states, 16 states have (on average 62.75) internal successors, (1004), 16 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:56,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:56,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:56,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:56,786 INFO L130 PetriNetUnfolder]: 264/475 cut-off events. [2023-08-29 19:45:56,786 INFO L131 PetriNetUnfolder]: For 5411/5411 co-relation queries the response was YES. [2023-08-29 19:45:56,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 475 events. 264/475 cut-off events. For 5411/5411 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1703 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2676. Up to 249 conditions per place. [2023-08-29 19:45:56,790 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2023-08-29 19:45:56,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1567 flow [2023-08-29 19:45:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 19:45:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 19:45:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1059 transitions. [2023-08-29 19:45:56,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596354166666667 [2023-08-29 19:45:56,793 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1059 transitions. [2023-08-29 19:45:56,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1059 transitions. [2023-08-29 19:45:56,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:56,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1059 transitions. [2023-08-29 19:45:56,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.1875) internal successors, (1059), 16 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:56,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:56,799 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:56,799 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 749 flow. Second operand 16 states and 1059 transitions. [2023-08-29 19:45:56,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1567 flow [2023-08-29 19:45:56,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1188 flow, removed 176 selfloop flow, removed 5 redundant places. [2023-08-29 19:45:56,819 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 837 flow [2023-08-29 19:45:56,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2023-08-29 19:45:56,820 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2023-08-29 19:45:56,820 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 837 flow [2023-08-29 19:45:56,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 62.75) internal successors, (1004), 16 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:56,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:56,821 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:56,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-29 19:45:57,026 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:57,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash -157115917, now seen corresponding path program 5 times [2023-08-29 19:45:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435888439] [2023-08-29 19:45:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:57,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:57,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:57,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435888439] [2023-08-29 19:45:57,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435888439] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:57,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325449850] [2023-08-29 19:45:57,134 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:45:57,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:57,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:57,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:57,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 19:45:57,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-29 19:45:57,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:57,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 19:45:57,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:57,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:57,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325449850] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:57,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:57,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-29 19:45:57,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286131087] [2023-08-29 19:45:57,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:57,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-29 19:45:57,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-29 19:45:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-29 19:45:57,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:57,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 837 flow. Second operand has 17 states, 17 states have (on average 62.8235294117647) internal successors, (1068), 17 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:57,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:57,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:57,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:57,930 INFO L130 PetriNetUnfolder]: 418/767 cut-off events. [2023-08-29 19:45:57,931 INFO L131 PetriNetUnfolder]: For 14603/14603 co-relation queries the response was YES. [2023-08-29 19:45:57,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4392 conditions, 767 events. 418/767 cut-off events. For 14603/14603 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3396 event pairs, 44 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4356. Up to 230 conditions per place. [2023-08-29 19:45:57,937 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2023-08-29 19:45:57,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 183 transitions, 2229 flow [2023-08-29 19:45:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-29 19:45:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-29 19:45:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1456 transitions. [2023-08-29 19:45:57,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2023-08-29 19:45:57,941 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1456 transitions. [2023-08-29 19:45:57,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1456 transitions. [2023-08-29 19:45:57,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:57,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1456 transitions. [2023-08-29 19:45:57,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 66.18181818181819) internal successors, (1456), 22 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:57,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 144.0) internal successors, (3312), 23 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:57,949 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 144.0) internal successors, (3312), 23 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:57,949 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 837 flow. Second operand 22 states and 1456 transitions. [2023-08-29 19:45:57,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 183 transitions, 2229 flow [2023-08-29 19:45:58,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 183 transitions, 2088 flow, removed 61 selfloop flow, removed 4 redundant places. [2023-08-29 19:45:58,006 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1568 flow [2023-08-29 19:45:58,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1568, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2023-08-29 19:45:58,006 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 98 predicate places. [2023-08-29 19:45:58,007 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1568 flow [2023-08-29 19:45:58,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 62.8235294117647) internal successors, (1068), 17 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:58,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:58,007 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:58,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:58,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:58,212 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:58,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:58,213 INFO L85 PathProgramCache]: Analyzing trace with hash 384037113, now seen corresponding path program 6 times [2023-08-29 19:45:58,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:58,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576957971] [2023-08-29 19:45:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:58,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:58,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576957971] [2023-08-29 19:45:58,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576957971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842861234] [2023-08-29 19:45:58,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:45:58,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:58,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:58,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:58,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 19:45:58,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-29 19:45:58,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:45:58,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 19:45:58,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:58,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:45:58,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842861234] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:58,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:58,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-29 19:45:58,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218892570] [2023-08-29 19:45:58,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:58,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-29 19:45:58,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:58,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-29 19:45:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-29 19:45:58,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:45:58,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1568 flow. Second operand has 17 states, 17 states have (on average 62.76470588235294) internal successors, (1067), 17 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:58,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:45:58,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:45:58,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:45:59,207 INFO L130 PetriNetUnfolder]: 582/1047 cut-off events. [2023-08-29 19:45:59,207 INFO L131 PetriNetUnfolder]: For 36450/36450 co-relation queries the response was YES. [2023-08-29 19:45:59,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7695 conditions, 1047 events. 582/1047 cut-off events. For 36450/36450 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4876 event pairs, 20 based on Foata normal form. 32/1079 useless extension candidates. Maximal degree in co-relation 7644. Up to 330 conditions per place. [2023-08-29 19:45:59,218 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 61 selfloop transitions, 129 changer transitions 48/238 dead transitions. [2023-08-29 19:45:59,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 238 transitions, 3794 flow [2023-08-29 19:45:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-29 19:45:59,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-29 19:45:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1787 transitions. [2023-08-29 19:45:59,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45961934156378603 [2023-08-29 19:45:59,225 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1787 transitions. [2023-08-29 19:45:59,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1787 transitions. [2023-08-29 19:45:59,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:45:59,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1787 transitions. [2023-08-29 19:45:59,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 66.18518518518519) internal successors, (1787), 27 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:59,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 144.0) internal successors, (4032), 28 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:59,240 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 144.0) internal successors, (4032), 28 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:59,240 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1568 flow. Second operand 27 states and 1787 transitions. [2023-08-29 19:45:59,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 238 transitions, 3794 flow [2023-08-29 19:45:59,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 238 transitions, 3449 flow, removed 164 selfloop flow, removed 4 redundant places. [2023-08-29 19:45:59,321 INFO L231 Difference]: Finished difference. Result has 159 places, 151 transitions, 2588 flow [2023-08-29 19:45:59,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2588, PETRI_PLACES=159, PETRI_TRANSITIONS=151} [2023-08-29 19:45:59,322 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2023-08-29 19:45:59,322 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 151 transitions, 2588 flow [2023-08-29 19:45:59,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 62.76470588235294) internal successors, (1067), 17 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:45:59,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:45:59,323 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:45:59,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 19:45:59,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:59,528 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:45:59,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:45:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash 107817203, now seen corresponding path program 7 times [2023-08-29 19:45:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:45:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751372329] [2023-08-29 19:45:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:45:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:45:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:59,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:45:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751372329] [2023-08-29 19:45:59,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751372329] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:45:59,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52531357] [2023-08-29 19:45:59,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:45:59,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:45:59,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:45:59,683 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:45:59,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 19:45:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:45:59,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-29 19:45:59,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:45:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:59,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:45:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:45:59,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52531357] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:45:59,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:45:59,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-08-29 19:45:59,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578643100] [2023-08-29 19:45:59,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:45:59,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-29 19:45:59,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:45:59,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-29 19:45:59,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-08-29 19:46:00,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:46:00,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 151 transitions, 2588 flow. Second operand has 24 states, 24 states have (on average 62.458333333333336) internal successors, (1499), 24 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:00,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:00,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:46:00,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:01,051 INFO L130 PetriNetUnfolder]: 814/1447 cut-off events. [2023-08-29 19:46:01,051 INFO L131 PetriNetUnfolder]: For 88367/88367 co-relation queries the response was YES. [2023-08-29 19:46:01,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13714 conditions, 1447 events. 814/1447 cut-off events. For 88367/88367 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6581 event pairs, 26 based on Foata normal form. 40/1487 useless extension candidates. Maximal degree in co-relation 13647. Up to 485 conditions per place. [2023-08-29 19:46:01,069 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 69 selfloop transitions, 184 changer transitions 70/323 dead transitions. [2023-08-29 19:46:01,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 323 transitions, 7011 flow [2023-08-29 19:46:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-29 19:46:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-29 19:46:01,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2506 transitions. [2023-08-29 19:46:01,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45796783625730997 [2023-08-29 19:46:01,073 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2506 transitions. [2023-08-29 19:46:01,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2506 transitions. [2023-08-29 19:46:01,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:01,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2506 transitions. [2023-08-29 19:46:01,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 65.94736842105263) internal successors, (2506), 38 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:01,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 144.0) internal successors, (5616), 39 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:01,087 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 144.0) internal successors, (5616), 39 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:01,087 INFO L175 Difference]: Start difference. First operand has 159 places, 151 transitions, 2588 flow. Second operand 38 states and 2506 transitions. [2023-08-29 19:46:01,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 323 transitions, 7011 flow [2023-08-29 19:46:01,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 323 transitions, 5420 flow, removed 770 selfloop flow, removed 10 redundant places. [2023-08-29 19:46:01,222 INFO L231 Difference]: Finished difference. Result has 206 places, 212 transitions, 3805 flow [2023-08-29 19:46:01,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3805, PETRI_PLACES=206, PETRI_TRANSITIONS=212} [2023-08-29 19:46:01,223 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 182 predicate places. [2023-08-29 19:46:01,223 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 212 transitions, 3805 flow [2023-08-29 19:46:01,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 62.458333333333336) internal successors, (1499), 24 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:01,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:01,224 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:01,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 19:46:01,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-29 19:46:01,430 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:01,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:01,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1076313209, now seen corresponding path program 8 times [2023-08-29 19:46:01,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:01,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731169918] [2023-08-29 19:46:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:01,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:01,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:01,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731169918] [2023-08-29 19:46:01,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731169918] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:46:01,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530795747] [2023-08-29 19:46:01,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:46:01,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:46:01,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:46:01,791 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:46:01,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 19:46:01,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:46:01,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:46:01,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 19:46:01,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:01,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:46:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:02,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530795747] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:46:02,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:46:02,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-08-29 19:46:02,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224893220] [2023-08-29 19:46:02,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:46:02,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-29 19:46:02,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:02,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-29 19:46:02,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2023-08-29 19:46:02,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:46:02,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 212 transitions, 3805 flow. Second operand has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:02,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:02,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:46:02,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:03,813 INFO L130 PetriNetUnfolder]: 934/1687 cut-off events. [2023-08-29 19:46:03,814 INFO L131 PetriNetUnfolder]: For 149489/149489 co-relation queries the response was YES. [2023-08-29 19:46:03,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17933 conditions, 1687 events. 934/1687 cut-off events. For 149489/149489 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7555 event pairs, 265 based on Foata normal form. 80/1767 useless extension candidates. Maximal degree in co-relation 17847. Up to 1189 conditions per place. [2023-08-29 19:46:03,845 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 227 selfloop transitions, 61 changer transitions 75/363 dead transitions. [2023-08-29 19:46:03,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 363 transitions, 8457 flow [2023-08-29 19:46:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-29 19:46:03,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-29 19:46:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2631 transitions. [2023-08-29 19:46:03,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45677083333333335 [2023-08-29 19:46:03,849 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2631 transitions. [2023-08-29 19:46:03,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2631 transitions. [2023-08-29 19:46:03,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:03,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2631 transitions. [2023-08-29 19:46:03,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 65.775) internal successors, (2631), 40 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:03,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 144.0) internal successors, (5904), 41 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:03,877 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 144.0) internal successors, (5904), 41 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:03,878 INFO L175 Difference]: Start difference. First operand has 206 places, 212 transitions, 3805 flow. Second operand 40 states and 2631 transitions. [2023-08-29 19:46:03,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 363 transitions, 8457 flow [2023-08-29 19:46:04,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 363 transitions, 7153 flow, removed 626 selfloop flow, removed 6 redundant places. [2023-08-29 19:46:04,150 INFO L231 Difference]: Finished difference. Result has 261 places, 242 transitions, 4526 flow [2023-08-29 19:46:04,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2993, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4526, PETRI_PLACES=261, PETRI_TRANSITIONS=242} [2023-08-29 19:46:04,151 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 237 predicate places. [2023-08-29 19:46:04,151 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 242 transitions, 4526 flow [2023-08-29 19:46:04,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:04,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:04,152 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:04,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:04,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 19:46:04,361 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:04,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:04,362 INFO L85 PathProgramCache]: Analyzing trace with hash 763683891, now seen corresponding path program 9 times [2023-08-29 19:46:04,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:04,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102231958] [2023-08-29 19:46:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:04,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:04,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102231958] [2023-08-29 19:46:04,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102231958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:46:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435604519] [2023-08-29 19:46:04,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:46:04,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:46:04,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:46:04,713 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:46:04,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 19:46:04,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-08-29 19:46:04,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:46:04,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 19:46:04,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:04,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:46:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:05,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435604519] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:46:05,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:46:05,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2023-08-29 19:46:05,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714638685] [2023-08-29 19:46:05,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:46:05,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-29 19:46:05,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-29 19:46:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1274, Unknown=0, NotChecked=0, Total=1640 [2023-08-29 19:46:05,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:46:05,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 242 transitions, 4526 flow. Second operand has 41 states, 41 states have (on average 62.31707317073171) internal successors, (2555), 41 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:05,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:05,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:46:05,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:07,069 INFO L130 PetriNetUnfolder]: 1214/2247 cut-off events. [2023-08-29 19:46:07,069 INFO L131 PetriNetUnfolder]: For 375706/375706 co-relation queries the response was YES. [2023-08-29 19:46:07,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27891 conditions, 2247 events. 1214/2247 cut-off events. For 375706/375706 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10854 event pairs, 166 based on Foata normal form. 80/2327 useless extension candidates. Maximal degree in co-relation 27782. Up to 881 conditions per place. [2023-08-29 19:46:07,107 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 188 selfloop transitions, 186 changer transitions 87/461 dead transitions. [2023-08-29 19:46:07,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 461 transitions, 10833 flow [2023-08-29 19:46:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-29 19:46:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-29 19:46:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3028 transitions. [2023-08-29 19:46:07,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571256038647343 [2023-08-29 19:46:07,113 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3028 transitions. [2023-08-29 19:46:07,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3028 transitions. [2023-08-29 19:46:07,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:07,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3028 transitions. [2023-08-29 19:46:07,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 65.82608695652173) internal successors, (3028), 46 states have internal predecessors, (3028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:07,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 144.0) internal successors, (6768), 47 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:07,127 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 144.0) internal successors, (6768), 47 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:07,128 INFO L175 Difference]: Start difference. First operand has 261 places, 242 transitions, 4526 flow. Second operand 46 states and 3028 transitions. [2023-08-29 19:46:07,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 461 transitions, 10833 flow [2023-08-29 19:46:07,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 461 transitions, 9674 flow, removed 552 selfloop flow, removed 14 redundant places. [2023-08-29 19:46:07,662 INFO L231 Difference]: Finished difference. Result has 312 places, 311 transitions, 6248 flow [2023-08-29 19:46:07,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3367, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6248, PETRI_PLACES=312, PETRI_TRANSITIONS=311} [2023-08-29 19:46:07,663 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 288 predicate places. [2023-08-29 19:46:07,663 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 311 transitions, 6248 flow [2023-08-29 19:46:07,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 62.31707317073171) internal successors, (2555), 41 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:07,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:07,664 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:07,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:07,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:46:07,869 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:07,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2072400751, now seen corresponding path program 10 times [2023-08-29 19:46:07,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:07,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176599011] [2023-08-29 19:46:07,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:07,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176599011] [2023-08-29 19:46:08,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176599011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:46:08,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089055100] [2023-08-29 19:46:08,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:46:08,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:46:08,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:46:08,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:46:08,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 19:46:08,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:46:08,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:46:08,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 19:46:08,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:08,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:46:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:08,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089055100] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:46:08,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:46:08,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-08-29 19:46:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825950157] [2023-08-29 19:46:08,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:46:08,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-29 19:46:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-29 19:46:08,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2023-08-29 19:46:08,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:46:08,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 311 transitions, 6248 flow. Second operand has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:08,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:08,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:46:08,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:10,623 INFO L130 PetriNetUnfolder]: 1686/3191 cut-off events. [2023-08-29 19:46:10,623 INFO L131 PetriNetUnfolder]: For 869618/869618 co-relation queries the response was YES. [2023-08-29 19:46:10,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47923 conditions, 3191 events. 1686/3191 cut-off events. For 869618/869618 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17382 event pairs, 98 based on Foata normal form. 80/3271 useless extension candidates. Maximal degree in co-relation 47793. Up to 1337 conditions per place. [2023-08-29 19:46:10,733 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 143 selfloop transitions, 359 changer transitions 97/599 dead transitions. [2023-08-29 19:46:10,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 599 transitions, 15945 flow [2023-08-29 19:46:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-29 19:46:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-29 19:46:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3357 transitions. [2023-08-29 19:46:10,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571078431372549 [2023-08-29 19:46:10,745 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3357 transitions. [2023-08-29 19:46:10,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3357 transitions. [2023-08-29 19:46:10,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:10,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3357 transitions. [2023-08-29 19:46:10,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 65.82352941176471) internal successors, (3357), 51 states have internal predecessors, (3357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:10,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 144.0) internal successors, (7488), 52 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:10,768 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 144.0) internal successors, (7488), 52 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:10,768 INFO L175 Difference]: Start difference. First operand has 312 places, 311 transitions, 6248 flow. Second operand 51 states and 3357 transitions. [2023-08-29 19:46:10,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 599 transitions, 15945 flow [2023-08-29 19:46:12,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 599 transitions, 13961 flow, removed 951 selfloop flow, removed 14 redundant places. [2023-08-29 19:46:12,204 INFO L231 Difference]: Finished difference. Result has 372 places, 434 transitions, 9539 flow [2023-08-29 19:46:12,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4696, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=9539, PETRI_PLACES=372, PETRI_TRANSITIONS=434} [2023-08-29 19:46:12,205 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 348 predicate places. [2023-08-29 19:46:12,205 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 434 transitions, 9539 flow [2023-08-29 19:46:12,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:12,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:12,206 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:12,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:12,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-29 19:46:12,412 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:12,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1171194281, now seen corresponding path program 11 times [2023-08-29 19:46:12,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:12,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512410191] [2023-08-29 19:46:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:12,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512410191] [2023-08-29 19:46:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512410191] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:46:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432419695] [2023-08-29 19:46:12,702 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:46:12,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:46:12,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:46:12,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:46:12,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 19:46:12,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-08-29 19:46:12,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:46:12,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 19:46:12,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:12,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:46:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432419695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:46:13,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:46:13,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-08-29 19:46:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264160465] [2023-08-29 19:46:13,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:46:13,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-29 19:46:13,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-29 19:46:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1270, Unknown=0, NotChecked=0, Total=1560 [2023-08-29 19:46:13,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:46:13,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 434 transitions, 9539 flow. Second operand has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:13,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:13,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:46:13,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:16,113 INFO L130 PetriNetUnfolder]: 2270/4251 cut-off events. [2023-08-29 19:46:16,113 INFO L131 PetriNetUnfolder]: For 1759091/1759091 co-relation queries the response was YES. [2023-08-29 19:46:16,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77430 conditions, 4251 events. 2270/4251 cut-off events. For 1759091/1759091 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 24504 event pairs, 32 based on Foata normal form. 80/4331 useless extension candidates. Maximal degree in co-relation 77275. Up to 1813 conditions per place. [2023-08-29 19:46:16,283 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 128 selfloop transitions, 542 changer transitions 101/771 dead transitions. [2023-08-29 19:46:16,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 771 transitions, 23776 flow [2023-08-29 19:46:16,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-29 19:46:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-29 19:46:16,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4150 transitions. [2023-08-29 19:46:16,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574514991181658 [2023-08-29 19:46:16,288 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4150 transitions. [2023-08-29 19:46:16,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4150 transitions. [2023-08-29 19:46:16,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:16,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4150 transitions. [2023-08-29 19:46:16,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 65.87301587301587) internal successors, (4150), 63 states have internal predecessors, (4150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:16,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 144.0) internal successors, (9216), 64 states have internal predecessors, (9216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:16,306 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 144.0) internal successors, (9216), 64 states have internal predecessors, (9216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:16,306 INFO L175 Difference]: Start difference. First operand has 372 places, 434 transitions, 9539 flow. Second operand 63 states and 4150 transitions. [2023-08-29 19:46:16,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 771 transitions, 23776 flow [2023-08-29 19:46:19,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 771 transitions, 18787 flow, removed 2416 selfloop flow, removed 17 redundant places. [2023-08-29 19:46:19,532 INFO L231 Difference]: Finished difference. Result has 448 places, 574 transitions, 13046 flow [2023-08-29 19:46:19,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=6972, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=13046, PETRI_PLACES=448, PETRI_TRANSITIONS=574} [2023-08-29 19:46:19,533 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 424 predicate places. [2023-08-29 19:46:19,534 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 574 transitions, 13046 flow [2023-08-29 19:46:19,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 62.3) internal successors, (2492), 40 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:19,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:19,535 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:19,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:19,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:46:19,740 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:19,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash -5223461, now seen corresponding path program 12 times [2023-08-29 19:46:19,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:19,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895423813] [2023-08-29 19:46:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:19,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:20,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:20,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895423813] [2023-08-29 19:46:20,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895423813] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:46:20,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012089680] [2023-08-29 19:46:20,054 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:46:20,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:46:20,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:46:20,055 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:46:20,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 19:46:20,141 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-08-29 19:46:20,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:46:20,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-29 19:46:20,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:20,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:46:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:46:20,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012089680] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:46:20,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:46:20,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2023-08-29 19:46:20,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681979165] [2023-08-29 19:46:20,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:46:20,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-29 19:46:20,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:20,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-29 19:46:20,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=1376, Unknown=0, NotChecked=0, Total=1806 [2023-08-29 19:46:20,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:46:20,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 574 transitions, 13046 flow. Second operand has 43 states, 43 states have (on average 62.30232558139535) internal successors, (2679), 43 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:20,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:20,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:46:20,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:24,214 INFO L130 PetriNetUnfolder]: 2678/4995 cut-off events. [2023-08-29 19:46:24,214 INFO L131 PetriNetUnfolder]: For 2229793/2229793 co-relation queries the response was YES. [2023-08-29 19:46:24,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100151 conditions, 4995 events. 2678/4995 cut-off events. For 2229793/2229793 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 28613 event pairs, 20 based on Foata normal form. 84/5079 useless extension candidates. Maximal degree in co-relation 99965. Up to 2137 conditions per place. [2023-08-29 19:46:24,315 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 114 selfloop transitions, 654 changer transitions 144/912 dead transitions. [2023-08-29 19:46:24,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 912 transitions, 34141 flow [2023-08-29 19:46:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-08-29 19:46:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-08-29 19:46:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 4939 transitions. [2023-08-29 19:46:24,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45731481481481484 [2023-08-29 19:46:24,322 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 4939 transitions. [2023-08-29 19:46:24,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 4939 transitions. [2023-08-29 19:46:24,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:24,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 4939 transitions. [2023-08-29 19:46:24,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 65.85333333333334) internal successors, (4939), 75 states have internal predecessors, (4939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:24,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 144.0) internal successors, (10944), 76 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:24,341 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 144.0) internal successors, (10944), 76 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:24,342 INFO L175 Difference]: Start difference. First operand has 448 places, 574 transitions, 13046 flow. Second operand 75 states and 4939 transitions. [2023-08-29 19:46:24,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 912 transitions, 34141 flow [2023-08-29 19:46:28,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 912 transitions, 26523 flow, removed 3610 selfloop flow, removed 25 redundant places. [2023-08-29 19:46:28,980 INFO L231 Difference]: Finished difference. Result has 535 places, 687 transitions, 17282 flow [2023-08-29 19:46:28,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=9502, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=17282, PETRI_PLACES=535, PETRI_TRANSITIONS=687} [2023-08-29 19:46:28,981 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 511 predicate places. [2023-08-29 19:46:28,981 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 687 transitions, 17282 flow [2023-08-29 19:46:28,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 62.30232558139535) internal successors, (2679), 43 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:28,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:28,982 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:28,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:29,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:46:29,193 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:29,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:29,194 INFO L85 PathProgramCache]: Analyzing trace with hash 155623333, now seen corresponding path program 13 times [2023-08-29 19:46:29,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:29,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242740868] [2023-08-29 19:46:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:29,954 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:29,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 19:46:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242740868] [2023-08-29 19:46:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242740868] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 19:46:29,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127953421] [2023-08-29 19:46:29,955 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:46:29,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 19:46:29,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:46:29,956 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 19:46:29,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-29 19:46:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:30,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-29 19:46:30,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:30,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:46:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:30,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127953421] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:46:30,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 19:46:30,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 46 [2023-08-29 19:46:30,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236192087] [2023-08-29 19:46:30,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 19:46:30,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-29 19:46:30,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 19:46:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-29 19:46:30,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2023-08-29 19:46:30,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-29 19:46:30,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 687 transitions, 17282 flow. Second operand has 48 states, 48 states have (on average 62.25) internal successors, (2988), 48 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:30,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:30,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-29 19:46:30,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:36,228 INFO L130 PetriNetUnfolder]: 2934/5423 cut-off events. [2023-08-29 19:46:36,228 INFO L131 PetriNetUnfolder]: For 3553199/3553199 co-relation queries the response was YES. [2023-08-29 19:46:36,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126944 conditions, 5423 events. 2934/5423 cut-off events. For 3553199/3553199 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 30789 event pairs, 18 based on Foata normal form. 28/5451 useless extension candidates. Maximal degree in co-relation 126720. Up to 2285 conditions per place. [2023-08-29 19:46:36,387 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 133 selfloop transitions, 720 changer transitions 170/1023 dead transitions. [2023-08-29 19:46:36,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1023 transitions, 39711 flow [2023-08-29 19:46:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-08-29 19:46:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-08-29 19:46:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5782 transitions. [2023-08-29 19:46:36,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45628156565656564 [2023-08-29 19:46:36,397 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5782 transitions. [2023-08-29 19:46:36,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5782 transitions. [2023-08-29 19:46:36,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:36,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5782 transitions. [2023-08-29 19:46:36,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 65.70454545454545) internal successors, (5782), 88 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:36,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 144.0) internal successors, (12816), 89 states have internal predecessors, (12816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:36,417 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 144.0) internal successors, (12816), 89 states have internal predecessors, (12816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:36,417 INFO L175 Difference]: Start difference. First operand has 535 places, 687 transitions, 17282 flow. Second operand 88 states and 5782 transitions. [2023-08-29 19:46:36,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 1023 transitions, 39711 flow [2023-08-29 19:46:45,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 1023 transitions, 30533 flow, removed 4441 selfloop flow, removed 18 redundant places. [2023-08-29 19:46:45,148 INFO L231 Difference]: Finished difference. Result has 618 places, 751 transitions, 16536 flow [2023-08-29 19:46:45,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=12046, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=657, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=16536, PETRI_PLACES=618, PETRI_TRANSITIONS=751} [2023-08-29 19:46:45,150 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 594 predicate places. [2023-08-29 19:46:45,150 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 751 transitions, 16536 flow [2023-08-29 19:46:45,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 62.25) internal successors, (2988), 48 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:45,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:45,150 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:45,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:45,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-29 19:46:45,351 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:45,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:45,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1381319199, now seen corresponding path program 14 times [2023-08-29 19:46:45,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 19:46:45,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830880677] [2023-08-29 19:46:45,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:45,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 19:46:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 19:46:45,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 19:46:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 19:46:45,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 19:46:45,432 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 19:46:45,433 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-08-29 19:46:45,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-29 19:46:45,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-29 19:46:45,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-29 19:46:45,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-08-29 19:46:45,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-29 19:46:45,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-29 19:46:45,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-29 19:46:45,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-29 19:46:45,436 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:45,440 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:46:45,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:46:45,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:46:45 BasicIcfg [2023-08-29 19:46:45,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:46:45,518 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:46:45,518 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:46:45,518 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:46:45,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:45:50" (3/4) ... [2023-08-29 19:46:45,520 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 19:46:45,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:46:45,521 INFO L158 Benchmark]: Toolchain (without parser) took 56192.71ms. Allocated memory was 75.5MB in the beginning and 3.7GB in the end (delta: 3.7GB). Free memory was 51.6MB in the beginning and 2.8GB in the end (delta: -2.8GB). Peak memory consumption was 888.4MB. Max. memory is 16.1GB. [2023-08-29 19:46:45,521 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:46:45,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.66ms. Allocated memory is still 75.5MB. Free memory was 51.4MB in the beginning and 50.0MB in the end (delta: 1.4MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2023-08-29 19:46:45,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.06ms. Allocated memory is still 75.5MB. Free memory was 50.0MB in the beginning and 48.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:46:45,522 INFO L158 Benchmark]: Boogie Preprocessor took 20.32ms. Allocated memory is still 75.5MB. Free memory was 48.2MB in the beginning and 46.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:46:45,522 INFO L158 Benchmark]: RCFGBuilder took 384.11ms. Allocated memory is still 75.5MB. Free memory was 46.6MB in the beginning and 33.5MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 19:46:45,522 INFO L158 Benchmark]: TraceAbstraction took 55232.82ms. Allocated memory was 75.5MB in the beginning and 3.7GB in the end (delta: 3.7GB). Free memory was 32.9MB in the beginning and 2.8GB in the end (delta: -2.8GB). Peak memory consumption was 868.5MB. Max. memory is 16.1GB. [2023-08-29 19:46:45,522 INFO L158 Benchmark]: Witness Printer took 2.79ms. Allocated memory is still 3.7GB. Free memory is still 2.8GB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:46:45,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.66ms. Allocated memory is still 75.5MB. Free memory was 51.4MB in the beginning and 50.0MB in the end (delta: 1.4MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.06ms. Allocated memory is still 75.5MB. Free memory was 50.0MB in the beginning and 48.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.32ms. Allocated memory is still 75.5MB. Free memory was 48.2MB in the beginning and 46.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 384.11ms. Allocated memory is still 75.5MB. Free memory was 46.6MB in the beginning and 33.5MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 55232.82ms. Allocated memory was 75.5MB in the beginning and 3.7GB in the end (delta: 3.7GB). Free memory was 32.9MB in the beginning and 2.8GB in the end (delta: -2.8GB). Peak memory consumption was 868.5MB. Max. memory is 16.1GB. * Witness Printer took 2.79ms. Allocated memory is still 3.7GB. Free memory is still 2.8GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 74 PlacesBefore, 24 PlacesAfterwards, 72 TransitionsBefore, 20 TransitionsAfterwards, 1254 CoEnabledTransitionPairs, 5 FixpointIterations, 27 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 1104 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 978, independent: 952, independent conditional: 0, independent unconditional: 952, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 644, independent: 633, independent conditional: 0, independent unconditional: 633, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 978, independent: 319, independent conditional: 0, independent unconditional: 319, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 644, unknown conditional: 0, unknown unconditional: 644] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=45, id1={3:0}, id2={5:0}, j=46, k=20, k=20] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 92 locations, 8 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: 55.0s, OverallIterations: 22, TraceHistogramMax: 20, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 40.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6724 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6511 mSDsluCounter, 1100 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1062 mSDsCounter, 583 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5964 IncrementalHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 583 mSolverCounterUnsat, 38 mSDtfsCounter, 5964 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1109 GetRequests, 293 SyntacticMatches, 30 SemanticMatches, 786 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19565 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17282occurred in iteration=20, InterpolantAutomatonStates: 529, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 602 NumberOfCodeBlocks, 601 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 756 ConstructedInterpolants, 0 QuantifiedInterpolants, 3440 SizeOfPredicates, 149 NumberOfNonLiveVariables, 2045 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 43 InterpolantComputations, 10 PerfectInterpolantSequences, 24/2151 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-29 19:46:45,549 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/triangular-longest-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 19:46:47,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 19:46:47,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 19:46:47,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 19:46:47,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 19:46:47,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 19:46:47,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 19:46:47,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 19:46:47,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 19:46:47,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 19:46:47,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 19:46:47,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 19:46:47,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 19:46:47,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 19:46:47,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 19:46:47,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 19:46:47,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 19:46:47,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 19:46:47,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 19:46:47,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 19:46:47,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 19:46:47,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 19:46:47,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 19:46:47,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 19:46:47,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 19:46:47,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 19:46:47,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 19:46:47,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 19:46:47,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 19:46:47,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 19:46:47,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 19:46:47,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 19:46:47,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 19:46:47,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 19:46:47,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 19:46:47,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 19:46:47,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 19:46:47,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 19:46:47,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 19:46:47,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 19:46:47,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 19:46:47,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 19:46:47,626 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 19:46:47,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 19:46:47,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 19:46:47,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 19:46:47,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 19:46:47,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 19:46:47,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 19:46:47,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 19:46:47,630 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 19:46:47,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 19:46:47,630 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 19:46:47,630 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 19:46:47,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 19:46:47,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 19:46:47,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 19:46:47,631 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 19:46:47,631 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 19:46:47,631 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 19:46:47,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 19:46:47,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 19:46:47,632 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 19:46:47,632 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 19:46:47,632 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 19:46:47,633 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 19:46:47,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 19:46:47,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 19:46:47,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 19:46:47,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:46:47,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 19:46:47,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 19:46:47,634 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 19:46:47,634 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 19:46:47,634 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 19:46:47,634 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 19:46:47,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 19:46:47,635 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 19:46:47,635 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 19:46:47,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 19:46:47,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 19:46:47,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 19:46:47,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 19:46:47,976 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 19:46:47,976 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 19:46:47,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-29 19:46:49,152 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 19:46:49,435 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 19:46:49,436 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-29 19:46:49,451 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63ccb2777/88794d8fb4814f7291a19bb6826edb87/FLAG0a11fa8cd [2023-08-29 19:46:49,473 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63ccb2777/88794d8fb4814f7291a19bb6826edb87 [2023-08-29 19:46:49,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 19:46:49,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 19:46:49,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 19:46:49,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 19:46:49,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 19:46:49,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:49,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db8dcc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49, skipping insertion in model container [2023-08-29 19:46:49,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:49,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 19:46:49,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 19:46:49,846 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/triangular-longest-2.i[30964,30977] [2023-08-29 19:46:49,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:46:49,860 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 19:46:49,894 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/triangular-longest-2.i[30964,30977] [2023-08-29 19:46:49,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 19:46:49,923 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:46:49,924 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 19:46:49,930 INFO L208 MainTranslator]: Completed translation [2023-08-29 19:46:49,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49 WrapperNode [2023-08-29 19:46:49,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 19:46:49,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 19:46:49,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 19:46:49,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 19:46:49,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:49,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:49,979 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2023-08-29 19:46:49,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 19:46:49,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 19:46:49,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 19:46:49,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 19:46:49,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:49,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:50,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:50,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:50,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:50,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:50,024 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:50,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:50,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 19:46:50,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 19:46:50,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 19:46:50,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 19:46:50,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (1/1) ... [2023-08-29 19:46:50,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 19:46:50,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 19:46:50,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 19:46:50,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 19:46:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-29 19:46:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-29 19:46:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-29 19:46:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-29 19:46:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 19:46:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 19:46:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 19:46:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 19:46:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 19:46:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 19:46:50,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 19:46:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 19:46:50,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 19:46:50,111 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 19:46:50,267 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 19:46:50,268 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 19:46:50,461 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 19:46:50,467 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 19:46:50,467 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 19:46:50,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:46:50 BoogieIcfgContainer [2023-08-29 19:46:50,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 19:46:50,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 19:46:50,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 19:46:50,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 19:46:50,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 07:46:49" (1/3) ... [2023-08-29 19:46:50,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105e2134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:46:50, skipping insertion in model container [2023-08-29 19:46:50,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 07:46:49" (2/3) ... [2023-08-29 19:46:50,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105e2134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 07:46:50, skipping insertion in model container [2023-08-29 19:46:50,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:46:50" (3/3) ... [2023-08-29 19:46:50,482 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-08-29 19:46:50,496 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 19:46:50,497 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 19:46:50,497 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 19:46:50,545 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 19:46:50,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 160 flow [2023-08-29 19:46:50,606 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-29 19:46:50,607 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:46:50,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 5/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 19:46:50,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 160 flow [2023-08-29 19:46:50,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 73 transitions, 152 flow [2023-08-29 19:46:50,621 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 19:46:50,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 73 transitions, 152 flow [2023-08-29 19:46:50,637 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 73 transitions, 152 flow [2023-08-29 19:46:50,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 152 flow [2023-08-29 19:46:50,666 INFO L130 PetriNetUnfolder]: 5/73 cut-off events. [2023-08-29 19:46:50,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:46:50,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 73 events. 5/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-29 19:46:50,670 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-29 19:46:54,620 INFO L134 LiptonReduction]: Checked pairs total: 1134 [2023-08-29 19:46:54,620 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-29 19:46:54,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 19:46:54,637 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;@525e4672, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 19:46:54,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-29 19:46:54,638 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 19:46:54,639 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:46:54,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:54,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 19:46:54,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:54,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash 295, now seen corresponding path program 1 times [2023-08-29 19:46:54,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:46:54,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118586292] [2023-08-29 19:46:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:54,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:54,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:46:54,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:46:54,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 19:46:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:54,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 19:46:54,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:54,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:46:54,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:46:54,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118586292] [2023-08-29 19:46:54,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118586292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:54,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:54,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 19:46:54,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829242041] [2023-08-29 19:46:54,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:54,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 19:46:54,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:46:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 19:46:54,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 19:46:54,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 144 [2023-08-29 19:46:54,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:54,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:54,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 144 [2023-08-29 19:46:54,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:54,857 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2023-08-29 19:46:54,857 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 19:46:54,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 464 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-08-29 19:46:54,860 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-08-29 19:46:54,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-08-29 19:46:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 19:46:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 19:46:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 158 transitions. [2023-08-29 19:46:54,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2023-08-29 19:46:54,872 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 158 transitions. [2023-08-29 19:46:54,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 158 transitions. [2023-08-29 19:46:54,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:54,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 158 transitions. [2023-08-29 19:46:54,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.0) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:54,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:54,898 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:54,900 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 158 transitions. [2023-08-29 19:46:54,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-08-29 19:46:54,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:54,916 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-08-29 19:46:54,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-29 19:46:54,921 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:46:54,921 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-08-29 19:46:54,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:54,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:54,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:46:54,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-08-29 19:46:55,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:55,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:55,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:55,131 INFO L85 PathProgramCache]: Analyzing trace with hash 288861, now seen corresponding path program 1 times [2023-08-29 19:46:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:46:55,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997535900] [2023-08-29 19:46:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:55,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:55,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:46:55,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:46:55,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 19:46:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:55,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 19:46:55,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:55,251 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-29 19:46:55,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2023-08-29 19:46:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:55,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:46:55,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:46:55,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997535900] [2023-08-29 19:46:55,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997535900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:55,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:55,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:55,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340966117] [2023-08-29 19:46:55,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:55,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:55,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:46:55,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:55,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:46:55,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:55,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:46:55,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:55,415 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2023-08-29 19:46:55,417 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 19:46:55,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 349 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2023-08-29 19:46:55,420 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-29 19:46:55,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-08-29 19:46:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-29 19:46:55,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-29 19:46:55,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-29 19:46:55,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-29 19:46:55,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:55,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-29 19:46:55,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,435 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 208 transitions. [2023-08-29 19:46:55,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-08-29 19:46:55,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:46:55,436 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-08-29 19:46:55,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-29 19:46:55,438 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-29 19:46:55,438 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-08-29 19:46:55,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:55,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 19:46:55,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:55,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:55,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:55,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:55,648 INFO L85 PathProgramCache]: Analyzing trace with hash 288862, now seen corresponding path program 1 times [2023-08-29 19:46:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:46:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477347362] [2023-08-29 19:46:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:55,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:55,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:46:55,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:46:55,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 19:46:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:55,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 19:46:55,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:55,722 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 19:46:55,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-08-29 19:46:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:55,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:46:55,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:46:55,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477347362] [2023-08-29 19:46:55,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477347362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:55,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:55,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 19:46:55,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175543112] [2023-08-29 19:46:55,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:55,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 19:46:55,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:46:55,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 19:46:55,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 19:46:55,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 144 [2023-08-29 19:46:55,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:55,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 144 [2023-08-29 19:46:55,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:55,830 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2023-08-29 19:46:55,831 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 19:46:55,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 326 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2023-08-29 19:46:55,832 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-08-29 19:46:55,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-08-29 19:46:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 19:46:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 19:46:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2023-08-29 19:46:55,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-29 19:46:55,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2023-08-29 19:46:55,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2023-08-29 19:46:55,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:55,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2023-08-29 19:46:55,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,848 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 216 transitions. [2023-08-29 19:46:55,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-08-29 19:46:55,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:55,849 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-29 19:46:55,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 19:46:55,850 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-08-29 19:46:55,850 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-29 19:46:55,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:55,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:55,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 19:46:55,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-08-29 19:46:56,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:56,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:56,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:56,052 INFO L85 PathProgramCache]: Analyzing trace with hash 15687470, now seen corresponding path program 1 times [2023-08-29 19:46:56,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:46:56,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127600638] [2023-08-29 19:46:56,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:56,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:56,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:46:56,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:46:56,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 19:46:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:56,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 19:46:56,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:56,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:46:56,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:46:56,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127600638] [2023-08-29 19:46:56,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127600638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:56,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:56,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:46:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866789046] [2023-08-29 19:46:56,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:56,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:46:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:46:56,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:46:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:46:56,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 144 [2023-08-29 19:46:56,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:46:56,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 144 [2023-08-29 19:46:56,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:46:56,389 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2023-08-29 19:46:56,390 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 19:46:56,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 878 event pairs, 14 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 144 conditions per place. [2023-08-29 19:46:56,392 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-08-29 19:46:56,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 166 flow [2023-08-29 19:46:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:46:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:46:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2023-08-29 19:46:56,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2023-08-29 19:46:56,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 355 transitions. [2023-08-29 19:46:56,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 355 transitions. [2023-08-29 19:46:56,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:46:56,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 355 transitions. [2023-08-29 19:46:56,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,398 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,398 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 355 transitions. [2023-08-29 19:46:56,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 166 flow [2023-08-29 19:46:56,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 19:46:56,400 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 79 flow [2023-08-29 19:46:56,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-08-29 19:46:56,401 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2023-08-29 19:46:56,401 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 79 flow [2023-08-29 19:46:56,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:46:56,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:46:56,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:46:56,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 19:46:56,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:56,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:46:56,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:46:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash 486312123, now seen corresponding path program 1 times [2023-08-29 19:46:56,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:46:56,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054546245] [2023-08-29 19:46:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:46:56,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:46:56,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:46:56,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:46:56,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 19:46:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:46:56,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 19:46:56,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:46:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:46:56,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:46:56,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:46:56,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054546245] [2023-08-29 19:46:56,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054546245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:46:56,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:46:56,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 19:46:56,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194946839] [2023-08-29 19:46:56,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:46:56,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 19:46:56,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:46:56,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 19:46:56,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 19:46:58,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 19:47:00,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 19:47:00,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 144 [2023-08-29 19:47:00,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:00,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:00,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 144 [2023-08-29 19:47:00,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:01,080 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2023-08-29 19:47:01,081 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-29 19:47:01,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 212 events. 130/212 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 629 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 579. Up to 143 conditions per place. [2023-08-29 19:47:01,085 INFO L137 encePairwiseOnDemand]: 141/144 looper letters, 17 selfloop transitions, 1 changer transitions 10/28 dead transitions. [2023-08-29 19:47:01,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 167 flow [2023-08-29 19:47:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 19:47:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 19:47:01,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2023-08-29 19:47:01,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2023-08-29 19:47:01,087 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 236 transitions. [2023-08-29 19:47:01,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 236 transitions. [2023-08-29 19:47:01,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:01,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 236 transitions. [2023-08-29 19:47:01,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,090 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 79 flow. Second operand 4 states and 236 transitions. [2023-08-29 19:47:01,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 167 flow [2023-08-29 19:47:01,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 19:47:01,094 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 77 flow [2023-08-29 19:47:01,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-29 19:47:01,096 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2023-08-29 19:47:01,096 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 77 flow [2023-08-29 19:47:01,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:01,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:01,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:01,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:01,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:01,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2080325179, now seen corresponding path program 1 times [2023-08-29 19:47:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:01,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61461812] [2023-08-29 19:47:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:01,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:01,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:01,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:01,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-29 19:47:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:01,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 19:47:01,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:01,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:47:01,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:01,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61461812] [2023-08-29 19:47:01,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61461812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:01,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:01,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:47:01,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350910289] [2023-08-29 19:47:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:01,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:47:01,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:47:01,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:47:01,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:01,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:01,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:01,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:01,565 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2023-08-29 19:47:01,566 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-29 19:47:01,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 157 events. 92/157 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 443 event pairs, 23 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 449. Up to 61 conditions per place. [2023-08-29 19:47:01,567 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 22 selfloop transitions, 9 changer transitions 3/34 dead transitions. [2023-08-29 19:47:01,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 193 flow [2023-08-29 19:47:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 19:47:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 19:47:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2023-08-29 19:47:01,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2023-08-29 19:47:01,570 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 342 transitions. [2023-08-29 19:47:01,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 342 transitions. [2023-08-29 19:47:01,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:01,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 342 transitions. [2023-08-29 19:47:01,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.4) internal successors, (342), 5 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,574 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 77 flow. Second operand 5 states and 342 transitions. [2023-08-29 19:47:01,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 193 flow [2023-08-29 19:47:01,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 19:47:01,575 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 119 flow [2023-08-29 19:47:01,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-08-29 19:47:01,577 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-08-29 19:47:01,577 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 119 flow [2023-08-29 19:47:01,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:01,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:01,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:01,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:01,785 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:01,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2104567520, now seen corresponding path program 1 times [2023-08-29 19:47:01,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879274372] [2023-08-29 19:47:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:01,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:01,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:01,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:01,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-29 19:47:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:01,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 19:47:01,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:01,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:47:01,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:01,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879274372] [2023-08-29 19:47:01,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879274372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:01,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:01,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:47:01,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233552834] [2023-08-29 19:47:01,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:01,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:47:01,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:01,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:47:01,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:47:01,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:01,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:01,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:01,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:01,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:02,019 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2023-08-29 19:47:02,020 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-08-29 19:47:02,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 229 events. 132/229 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 716 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 733. Up to 101 conditions per place. [2023-08-29 19:47:02,021 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-29 19:47:02,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 301 flow [2023-08-29 19:47:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:47:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:47:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2023-08-29 19:47:02,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47453703703703703 [2023-08-29 19:47:02,023 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 410 transitions. [2023-08-29 19:47:02,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 410 transitions. [2023-08-29 19:47:02,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:02,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 410 transitions. [2023-08-29 19:47:02,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.33333333333333) internal successors, (410), 6 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) [2023-08-29 19:47:02,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,027 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,027 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 119 flow. Second operand 6 states and 410 transitions. [2023-08-29 19:47:02,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 301 flow [2023-08-29 19:47:02,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 19:47:02,030 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 200 flow [2023-08-29 19:47:02,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-29 19:47:02,030 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2023-08-29 19:47:02,030 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 200 flow [2023-08-29 19:47:02,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:02,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:02,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:02,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:02,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:02,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2104543340, now seen corresponding path program 2 times [2023-08-29 19:47:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:02,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997796469] [2023-08-29 19:47:02,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:47:02,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:02,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:02,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:02,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-29 19:47:02,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 19:47:02,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:02,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 19:47:02,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:02,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:47:02,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:02,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997796469] [2023-08-29 19:47:02,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997796469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:02,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:02,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 19:47:02,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742157643] [2023-08-29 19:47:02,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:02,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 19:47:02,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 19:47:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 19:47:02,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:02,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:02,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:02,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:02,487 INFO L130 PetriNetUnfolder]: 124/219 cut-off events. [2023-08-29 19:47:02,487 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2023-08-29 19:47:02,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 219 events. 124/219 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 705 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 818. Up to 107 conditions per place. [2023-08-29 19:47:02,489 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 30 selfloop transitions, 12 changer transitions 6/48 dead transitions. [2023-08-29 19:47:02,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 381 flow [2023-08-29 19:47:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 19:47:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 19:47:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 409 transitions. [2023-08-29 19:47:02,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47337962962962965 [2023-08-29 19:47:02,491 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 409 transitions. [2023-08-29 19:47:02,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 409 transitions. [2023-08-29 19:47:02,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:02,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 409 transitions. [2023-08-29 19:47:02,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,494 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,494 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 200 flow. Second operand 6 states and 409 transitions. [2023-08-29 19:47:02,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 381 flow [2023-08-29 19:47:02,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 355 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-29 19:47:02,498 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 242 flow [2023-08-29 19:47:02,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-08-29 19:47:02,499 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2023-08-29 19:47:02,499 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 242 flow [2023-08-29 19:47:02,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:02,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:02,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:02,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:02,716 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:02,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2065235665, now seen corresponding path program 1 times [2023-08-29 19:47:02,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:02,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804241830] [2023-08-29 19:47:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 19:47:02,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:02,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:02,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:02,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-29 19:47:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:02,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 19:47:02,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:02,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:47:02,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:02,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804241830] [2023-08-29 19:47:02,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804241830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:02,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:02,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:02,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882390969] [2023-08-29 19:47:02,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:02,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:47:02,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:02,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:47:02,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:47:02,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:02,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:02,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:02,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:02,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:03,053 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2023-08-29 19:47:03,054 INFO L131 PetriNetUnfolder]: For 1057/1057 co-relation queries the response was YES. [2023-08-29 19:47:03,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 303 events. 172/303 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1066 event pairs, 41 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1216. Up to 131 conditions per place. [2023-08-29 19:47:03,056 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 43 selfloop transitions, 15 changer transitions 5/63 dead transitions. [2023-08-29 19:47:03,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 536 flow [2023-08-29 19:47:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 19:47:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 19:47:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 610 transitions. [2023-08-29 19:47:03,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470679012345679 [2023-08-29 19:47:03,060 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 610 transitions. [2023-08-29 19:47:03,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 610 transitions. [2023-08-29 19:47:03,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:03,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 610 transitions. [2023-08-29 19:47:03,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.77777777777777) internal successors, (610), 9 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,064 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 144.0) internal successors, (1440), 10 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,064 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 242 flow. Second operand 9 states and 610 transitions. [2023-08-29 19:47:03,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 536 flow [2023-08-29 19:47:03,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 514 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-29 19:47:03,069 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 330 flow [2023-08-29 19:47:03,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-08-29 19:47:03,070 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2023-08-29 19:47:03,070 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 330 flow [2023-08-29 19:47:03,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:03,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:03,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:03,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:03,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:03,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2065211485, now seen corresponding path program 2 times [2023-08-29 19:47:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:03,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379784167] [2023-08-29 19:47:03,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:47:03,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:03,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:03,281 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:03,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-29 19:47:03,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 19:47:03,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:03,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 19:47:03,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:03,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:47:03,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:03,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379784167] [2023-08-29 19:47:03,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379784167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:03,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:03,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:03,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838807951] [2023-08-29 19:47:03,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:03,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:47:03,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:03,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:47:03,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:47:03,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:03,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:03,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:03,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:03,550 INFO L130 PetriNetUnfolder]: 168/299 cut-off events. [2023-08-29 19:47:03,553 INFO L131 PetriNetUnfolder]: For 1657/1657 co-relation queries the response was YES. [2023-08-29 19:47:03,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 299 events. 168/299 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1074 event pairs, 45 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 1369. Up to 137 conditions per place. [2023-08-29 19:47:03,555 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 38 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2023-08-29 19:47:03,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 593 flow [2023-08-29 19:47:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:47:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:47:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-29 19:47:03,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-29 19:47:03,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-29 19:47:03,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-29 19:47:03,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:03,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-29 19:47:03,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,563 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,563 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 330 flow. Second operand 7 states and 476 transitions. [2023-08-29 19:47:03,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 593 flow [2023-08-29 19:47:03,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 522 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-08-29 19:47:03,572 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 343 flow [2023-08-29 19:47:03,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2023-08-29 19:47:03,573 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-29 19:47:03,573 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 343 flow [2023-08-29 19:47:03,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:03,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:03,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:03,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:03,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:03,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2065927585, now seen corresponding path program 3 times [2023-08-29 19:47:03,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:03,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104585941] [2023-08-29 19:47:03,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:47:03,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:03,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:03,785 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:03,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-29 19:47:03,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 19:47:03,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:03,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:47:03,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:03,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:47:03,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:03,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104585941] [2023-08-29 19:47:03,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104585941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:03,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:03,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:03,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004310861] [2023-08-29 19:47:03,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:03,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:47:03,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:03,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:47:03,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:47:03,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:03,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:03,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:03,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:03,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:04,100 INFO L130 PetriNetUnfolder]: 164/295 cut-off events. [2023-08-29 19:47:04,100 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2023-08-29 19:47:04,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 295 events. 164/295 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1103 event pairs, 46 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1316. Up to 222 conditions per place. [2023-08-29 19:47:04,103 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 44 selfloop transitions, 9 changer transitions 9/62 dead transitions. [2023-08-29 19:47:04,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 571 flow [2023-08-29 19:47:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:47:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:47:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 476 transitions. [2023-08-29 19:47:04,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-29 19:47:04,105 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 476 transitions. [2023-08-29 19:47:04,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 476 transitions. [2023-08-29 19:47:04,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:04,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 476 transitions. [2023-08-29 19:47:04,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:04,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:04,108 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:04,108 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 343 flow. Second operand 7 states and 476 transitions. [2023-08-29 19:47:04,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 571 flow [2023-08-29 19:47:04,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 541 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-29 19:47:04,116 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 367 flow [2023-08-29 19:47:04,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2023-08-29 19:47:04,116 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2023-08-29 19:47:04,116 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 367 flow [2023-08-29 19:47:04,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:04,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:04,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:04,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:04,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:04,326 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:04,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2065153825, now seen corresponding path program 4 times [2023-08-29 19:47:04,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293597572] [2023-08-29 19:47:04,326 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:47:04,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:04,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:04,327 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:04,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-29 19:47:04,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:47:04,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:04,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 19:47:04,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:04,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 19:47:04,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:04,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293597572] [2023-08-29 19:47:04,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293597572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 19:47:04,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 19:47:04,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 19:47:04,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597922865] [2023-08-29 19:47:04,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 19:47:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 19:47:04,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 19:47:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 19:47:04,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:04,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:04,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:04,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:04,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:04,605 INFO L130 PetriNetUnfolder]: 176/315 cut-off events. [2023-08-29 19:47:04,605 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2023-08-29 19:47:04,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 315 events. 176/315 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1176 event pairs, 53 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 1458. Up to 177 conditions per place. [2023-08-29 19:47:04,608 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 41 selfloop transitions, 16 changer transitions 8/65 dead transitions. [2023-08-29 19:47:04,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 643 flow [2023-08-29 19:47:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 19:47:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 19:47:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 475 transitions. [2023-08-29 19:47:04,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712301587301587 [2023-08-29 19:47:04,610 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 475 transitions. [2023-08-29 19:47:04,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 475 transitions. [2023-08-29 19:47:04,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:04,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 475 transitions. [2023-08-29 19:47:04,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:04,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:04,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 144.0) internal successors, (1152), 8 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:04,614 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 367 flow. Second operand 7 states and 475 transitions. [2023-08-29 19:47:04,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 643 flow [2023-08-29 19:47:04,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 617 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-29 19:47:04,625 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 438 flow [2023-08-29 19:47:04,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2023-08-29 19:47:04,626 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2023-08-29 19:47:04,626 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 438 flow [2023-08-29 19:47:04,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:04,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:04,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:04,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:04,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:04,835 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:04,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash 402976459, now seen corresponding path program 5 times [2023-08-29 19:47:04,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:04,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408549302] [2023-08-29 19:47:04,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:47:04,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:04,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:04,837 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:04,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-29 19:47:04,891 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:47:04,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:04,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:47:04,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:04,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:05,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:05,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408549302] [2023-08-29 19:47:05,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408549302] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:05,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:05,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-29 19:47:05,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124884479] [2023-08-29 19:47:05,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:05,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:47:05,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:05,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:47:05,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:47:05,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:05,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:05,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:05,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:05,811 INFO L130 PetriNetUnfolder]: 224/395 cut-off events. [2023-08-29 19:47:05,811 INFO L131 PetriNetUnfolder]: For 4433/4433 co-relation queries the response was YES. [2023-08-29 19:47:05,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 395 events. 224/395 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1510 event pairs, 12 based on Foata normal form. 16/411 useless extension candidates. Maximal degree in co-relation 2027. Up to 99 conditions per place. [2023-08-29 19:47:05,814 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 36 selfloop transitions, 43 changer transitions 26/105 dead transitions. [2023-08-29 19:47:05,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1130 flow [2023-08-29 19:47:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 19:47:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 19:47:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1079 transitions. [2023-08-29 19:47:05,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683159722222222 [2023-08-29 19:47:05,817 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1079 transitions. [2023-08-29 19:47:05,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1079 transitions. [2023-08-29 19:47:05,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:05,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1079 transitions. [2023-08-29 19:47:05,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.4375) internal successors, (1079), 16 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,824 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,824 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 438 flow. Second operand 16 states and 1079 transitions. [2023-08-29 19:47:05,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1130 flow [2023-08-29 19:47:05,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 1081 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-29 19:47:05,836 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 837 flow [2023-08-29 19:47:05,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2023-08-29 19:47:05,837 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2023-08-29 19:47:05,837 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 837 flow [2023-08-29 19:47:05,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:05,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:05,838 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:05,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:06,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:06,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:06,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash 380812761, now seen corresponding path program 6 times [2023-08-29 19:47:06,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:06,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253931056] [2023-08-29 19:47:06,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:47:06,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:06,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:06,050 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:06,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-29 19:47:06,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-29 19:47:06,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:06,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:47:06,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:06,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:06,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:06,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253931056] [2023-08-29 19:47:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253931056] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:06,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:06,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-29 19:47:06,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613516432] [2023-08-29 19:47:06,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:06,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:47:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:47:06,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:47:06,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:06,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 837 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:06,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:06,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:06,810 INFO L130 PetriNetUnfolder]: 248/443 cut-off events. [2023-08-29 19:47:06,810 INFO L131 PetriNetUnfolder]: For 7883/7883 co-relation queries the response was YES. [2023-08-29 19:47:06,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 443 events. 248/443 cut-off events. For 7883/7883 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1711 event pairs, 63 based on Foata normal form. 24/467 useless extension candidates. Maximal degree in co-relation 2583. Up to 281 conditions per place. [2023-08-29 19:47:06,814 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 63 selfloop transitions, 19 changer transitions 19/101 dead transitions. [2023-08-29 19:47:06,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1393 flow [2023-08-29 19:47:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 19:47:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 19:47:06,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 809 transitions. [2023-08-29 19:47:06,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681712962962963 [2023-08-29 19:47:06,818 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 809 transitions. [2023-08-29 19:47:06,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 809 transitions. [2023-08-29 19:47:06,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:06,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 809 transitions. [2023-08-29 19:47:06,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 67.41666666666667) internal successors, (809), 12 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,823 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 144.0) internal successors, (1872), 13 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,824 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 837 flow. Second operand 12 states and 809 transitions. [2023-08-29 19:47:06,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1393 flow [2023-08-29 19:47:06,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1033 flow, removed 161 selfloop flow, removed 9 redundant places. [2023-08-29 19:47:06,842 INFO L231 Difference]: Finished difference. Result has 92 places, 67 transitions, 738 flow [2023-08-29 19:47:06,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2023-08-29 19:47:06,842 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-08-29 19:47:06,843 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 738 flow [2023-08-29 19:47:06,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:06,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:06,843 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:06,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-08-29 19:47:07,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:07,053 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:07,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash 404049741, now seen corresponding path program 7 times [2023-08-29 19:47:07,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:07,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388016435] [2023-08-29 19:47:07,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:47:07,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:07,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:07,056 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:07,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-29 19:47:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:07,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:47:07,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:07,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:07,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:07,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388016435] [2023-08-29 19:47:07,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388016435] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:07,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:07,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-29 19:47:07,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024470774] [2023-08-29 19:47:07,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:07,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:47:07,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:47:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:47:07,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:07,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:07,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:07,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:07,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:08,062 INFO L130 PetriNetUnfolder]: 336/603 cut-off events. [2023-08-29 19:47:08,062 INFO L131 PetriNetUnfolder]: For 12794/12794 co-relation queries the response was YES. [2023-08-29 19:47:08,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 603 events. 336/603 cut-off events. For 12794/12794 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2591 event pairs, 62 based on Foata normal form. 24/627 useless extension candidates. Maximal degree in co-relation 3588. Up to 248 conditions per place. [2023-08-29 19:47:08,068 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 81 selfloop transitions, 37 changer transitions 14/132 dead transitions. [2023-08-29 19:47:08,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1675 flow [2023-08-29 19:47:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 19:47:08,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 19:47:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1079 transitions. [2023-08-29 19:47:08,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683159722222222 [2023-08-29 19:47:08,072 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1079 transitions. [2023-08-29 19:47:08,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1079 transitions. [2023-08-29 19:47:08,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:08,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1079 transitions. [2023-08-29 19:47:08,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 67.4375) internal successors, (1079), 16 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:08,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:08,079 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 144.0) internal successors, (2448), 17 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:08,079 INFO L175 Difference]: Start difference. First operand has 92 places, 67 transitions, 738 flow. Second operand 16 states and 1079 transitions. [2023-08-29 19:47:08,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1675 flow [2023-08-29 19:47:08,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1572 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-29 19:47:08,099 INFO L231 Difference]: Finished difference. Result has 111 places, 81 transitions, 1071 flow [2023-08-29 19:47:08,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2023-08-29 19:47:08,099 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2023-08-29 19:47:08,100 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 1071 flow [2023-08-29 19:47:08,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:08,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:08,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:08,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:08,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:08,310 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:08,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:08,310 INFO L85 PathProgramCache]: Analyzing trace with hash 404765841, now seen corresponding path program 8 times [2023-08-29 19:47:08,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:08,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716526547] [2023-08-29 19:47:08,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:47:08,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:08,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:08,312 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:08,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-29 19:47:08,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:47:08,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:08,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 19:47:08,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:08,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:08,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:08,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716526547] [2023-08-29 19:47:08,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716526547] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:08,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:08,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-29 19:47:08,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973371442] [2023-08-29 19:47:08,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:08,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 19:47:08,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 19:47:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-29 19:47:08,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:08,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 1071 flow. Second operand has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:08,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:08,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:08,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:09,402 INFO L130 PetriNetUnfolder]: 384/691 cut-off events. [2023-08-29 19:47:09,403 INFO L131 PetriNetUnfolder]: For 24504/24504 co-relation queries the response was YES. [2023-08-29 19:47:09,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4872 conditions, 691 events. 384/691 cut-off events. For 24504/24504 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3071 event pairs, 33 based on Foata normal form. 32/723 useless extension candidates. Maximal degree in co-relation 4827. Up to 216 conditions per place. [2023-08-29 19:47:09,409 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 57 selfloop transitions, 70 changer transitions 30/157 dead transitions. [2023-08-29 19:47:09,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 157 transitions, 2462 flow [2023-08-29 19:47:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-29 19:47:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-29 19:47:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1213 transitions. [2023-08-29 19:47:09,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679783950617284 [2023-08-29 19:47:09,413 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1213 transitions. [2023-08-29 19:47:09,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1213 transitions. [2023-08-29 19:47:09,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:09,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1213 transitions. [2023-08-29 19:47:09,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 67.38888888888889) internal successors, (1213), 18 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:09,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:09,419 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 144.0) internal successors, (2736), 19 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:09,420 INFO L175 Difference]: Start difference. First operand has 111 places, 81 transitions, 1071 flow. Second operand 18 states and 1213 transitions. [2023-08-29 19:47:09,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 157 transitions, 2462 flow [2023-08-29 19:47:09,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 2111 flow, removed 161 selfloop flow, removed 7 redundant places. [2023-08-29 19:47:09,482 INFO L231 Difference]: Finished difference. Result has 131 places, 103 transitions, 1585 flow [2023-08-29 19:47:09,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=131, PETRI_TRANSITIONS=103} [2023-08-29 19:47:09,483 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2023-08-29 19:47:09,483 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 103 transitions, 1585 flow [2023-08-29 19:47:09,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.833333333333336) internal successors, (766), 12 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:09,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:09,484 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:09,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:09,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:09,698 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:09,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:09,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1570592883, now seen corresponding path program 9 times [2023-08-29 19:47:09,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:09,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650201459] [2023-08-29 19:47:09,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:47:09,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:09,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:09,701 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:09,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-29 19:47:09,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-29 19:47:09,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:09,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:47:09,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:47:09,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:47:10,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650201459] [2023-08-29 19:47:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650201459] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:10,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:10,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-29 19:47:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56022838] [2023-08-29 19:47:10,189 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:10,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 19:47:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:10,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 19:47:10,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-08-29 19:47:10,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:10,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 103 transitions, 1585 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:10,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:10,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:10,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:11,593 INFO L130 PetriNetUnfolder]: 488/891 cut-off events. [2023-08-29 19:47:11,593 INFO L131 PetriNetUnfolder]: For 43601/43601 co-relation queries the response was YES. [2023-08-29 19:47:11,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7103 conditions, 891 events. 488/891 cut-off events. For 43601/43601 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4317 event pairs, 88 based on Foata normal form. 32/923 useless extension candidates. Maximal degree in co-relation 7049. Up to 401 conditions per place. [2023-08-29 19:47:11,602 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 99 selfloop transitions, 63 changer transitions 43/205 dead transitions. [2023-08-29 19:47:11,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 3412 flow [2023-08-29 19:47:11,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-29 19:47:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-29 19:47:11,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1610 transitions. [2023-08-29 19:47:11,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46585648148148145 [2023-08-29 19:47:11,605 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1610 transitions. [2023-08-29 19:47:11,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1610 transitions. [2023-08-29 19:47:11,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:11,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1610 transitions. [2023-08-29 19:47:11,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.08333333333333) internal successors, (1610), 24 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:11,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 144.0) internal successors, (3600), 25 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:11,614 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 144.0) internal successors, (3600), 25 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:11,614 INFO L175 Difference]: Start difference. First operand has 131 places, 103 transitions, 1585 flow. Second operand 24 states and 1610 transitions. [2023-08-29 19:47:11,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 3412 flow [2023-08-29 19:47:11,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 205 transitions, 2935 flow, removed 222 selfloop flow, removed 8 redundant places. [2023-08-29 19:47:11,711 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 2082 flow [2023-08-29 19:47:11,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2082, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2023-08-29 19:47:11,711 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2023-08-29 19:47:11,712 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 2082 flow [2023-08-29 19:47:11,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:11,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:11,712 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:11,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:11,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:11,922 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:11,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash -925720759, now seen corresponding path program 10 times [2023-08-29 19:47:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366085479] [2023-08-29 19:47:11,922 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:47:11,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:11,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:11,924 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:11,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-29 19:47:11,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:47:11,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:11,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:47:11,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:47:12,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:47:12,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366085479] [2023-08-29 19:47:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366085479] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:12,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-29 19:47:12,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064484272] [2023-08-29 19:47:12,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:12,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 19:47:12,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:12,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 19:47:12,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-08-29 19:47:12,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:12,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 2082 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:12,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:12,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:12,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:14,656 INFO L130 PetriNetUnfolder]: 692/1267 cut-off events. [2023-08-29 19:47:14,656 INFO L131 PetriNetUnfolder]: For 76869/76869 co-relation queries the response was YES. [2023-08-29 19:47:14,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 1267 events. 692/1267 cut-off events. For 76869/76869 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6365 event pairs, 38 based on Foata normal form. 32/1299 useless extension candidates. Maximal degree in co-relation 12171. Up to 444 conditions per place. [2023-08-29 19:47:14,670 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 110 selfloop transitions, 147 changer transitions 27/284 dead transitions. [2023-08-29 19:47:14,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 284 transitions, 5875 flow [2023-08-29 19:47:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-29 19:47:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-29 19:47:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2344 transitions. [2023-08-29 19:47:14,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650793650793651 [2023-08-29 19:47:14,675 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2344 transitions. [2023-08-29 19:47:14,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2344 transitions. [2023-08-29 19:47:14,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:14,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2344 transitions. [2023-08-29 19:47:14,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 66.97142857142858) internal successors, (2344), 35 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:14,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 144.0) internal successors, (5184), 36 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:14,687 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 144.0) internal successors, (5184), 36 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:14,687 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 2082 flow. Second operand 35 states and 2344 transitions. [2023-08-29 19:47:14,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 284 transitions, 5875 flow [2023-08-29 19:47:14,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 284 transitions, 5148 flow, removed 341 selfloop flow, removed 10 redundant places. [2023-08-29 19:47:14,870 INFO L231 Difference]: Finished difference. Result has 196 places, 191 transitions, 4139 flow [2023-08-29 19:47:14,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4139, PETRI_PLACES=196, PETRI_TRANSITIONS=191} [2023-08-29 19:47:14,873 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 172 predicate places. [2023-08-29 19:47:14,873 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 191 transitions, 4139 flow [2023-08-29 19:47:14,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:14,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:14,880 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:14,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:15,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:15,082 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:15,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash -925004659, now seen corresponding path program 11 times [2023-08-29 19:47:15,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:15,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625576419] [2023-08-29 19:47:15,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:47:15,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:15,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:15,084 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:15,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-29 19:47:15,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 19:47:15,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:15,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:47:15,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:47:15,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:47:15,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:15,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625576419] [2023-08-29 19:47:15,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625576419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:15,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:15,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-29 19:47:15,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359103645] [2023-08-29 19:47:15,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:15,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 19:47:15,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 19:47:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-08-29 19:47:15,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:15,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 191 transitions, 4139 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:15,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:15,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:15,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:17,511 INFO L130 PetriNetUnfolder]: 756/1383 cut-off events. [2023-08-29 19:47:17,513 INFO L131 PetriNetUnfolder]: For 116743/116743 co-relation queries the response was YES. [2023-08-29 19:47:17,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 1383 events. 756/1383 cut-off events. For 116743/116743 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7128 event pairs, 30 based on Foata normal form. 40/1423 useless extension candidates. Maximal degree in co-relation 14476. Up to 492 conditions per place. [2023-08-29 19:47:17,535 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 84 selfloop transitions, 162 changer transitions 54/300 dead transitions. [2023-08-29 19:47:17,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 300 transitions, 6668 flow [2023-08-29 19:47:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-29 19:47:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-29 19:47:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2014 transitions. [2023-08-29 19:47:17,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46620370370370373 [2023-08-29 19:47:17,539 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2014 transitions. [2023-08-29 19:47:17,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2014 transitions. [2023-08-29 19:47:17,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:17,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2014 transitions. [2023-08-29 19:47:17,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 67.13333333333334) internal successors, (2014), 30 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:17,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 144.0) internal successors, (4464), 31 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:17,550 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 144.0) internal successors, (4464), 31 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:17,550 INFO L175 Difference]: Start difference. First operand has 196 places, 191 transitions, 4139 flow. Second operand 30 states and 2014 transitions. [2023-08-29 19:47:17,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 300 transitions, 6668 flow [2023-08-29 19:47:17,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 300 transitions, 4781 flow, removed 891 selfloop flow, removed 17 redundant places. [2023-08-29 19:47:17,868 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 3497 flow [2023-08-29 19:47:17,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3497, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2023-08-29 19:47:17,868 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 188 predicate places. [2023-08-29 19:47:17,869 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 3497 flow [2023-08-29 19:47:17,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:17,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:17,869 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:17,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-08-29 19:47:18,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:18,070 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:18,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:18,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2014607281, now seen corresponding path program 12 times [2023-08-29 19:47:18,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:18,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292607805] [2023-08-29 19:47:18,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:47:18,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:18,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:18,072 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:18,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-29 19:47:18,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-29 19:47:18,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:18,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 19:47:18,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:47:18,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:47:18,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292607805] [2023-08-29 19:47:18,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292607805] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:18,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:18,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-08-29 19:47:18,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657667268] [2023-08-29 19:47:18,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 19:47:18,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 19:47:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-08-29 19:47:18,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:18,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 3497 flow. Second operand has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:18,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:18,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:18,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:20,138 INFO L130 PetriNetUnfolder]: 840/1523 cut-off events. [2023-08-29 19:47:20,139 INFO L131 PetriNetUnfolder]: For 112483/112483 co-relation queries the response was YES. [2023-08-29 19:47:20,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14600 conditions, 1523 events. 840/1523 cut-off events. For 112483/112483 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7801 event pairs, 54 based on Foata normal form. 28/1551 useless extension candidates. Maximal degree in co-relation 14519. Up to 424 conditions per place. [2023-08-29 19:47:20,152 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 96 selfloop transitions, 176 changer transitions 50/322 dead transitions. [2023-08-29 19:47:20,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 322 transitions, 6365 flow [2023-08-29 19:47:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-29 19:47:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-29 19:47:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1880 transitions. [2023-08-29 19:47:20,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662698412698413 [2023-08-29 19:47:20,155 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1880 transitions. [2023-08-29 19:47:20,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1880 transitions. [2023-08-29 19:47:20,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:20,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1880 transitions. [2023-08-29 19:47:20,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 67.14285714285714) internal successors, (1880), 28 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:20,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 144.0) internal successors, (4176), 29 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:20,163 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 144.0) internal successors, (4176), 29 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:20,163 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 3497 flow. Second operand 28 states and 1880 transitions. [2023-08-29 19:47:20,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 322 transitions, 6365 flow [2023-08-29 19:47:20,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 5818 flow, removed 215 selfloop flow, removed 19 redundant places. [2023-08-29 19:47:20,375 INFO L231 Difference]: Finished difference. Result has 236 places, 232 transitions, 4493 flow [2023-08-29 19:47:20,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4493, PETRI_PLACES=236, PETRI_TRANSITIONS=232} [2023-08-29 19:47:20,375 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2023-08-29 19:47:20,375 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 232 transitions, 4493 flow [2023-08-29 19:47:20,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.666666666666664) internal successors, (1146), 18 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:20,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:20,376 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:20,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:20,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:20,582 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:20,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:20,583 INFO L85 PathProgramCache]: Analyzing trace with hash 790771329, now seen corresponding path program 13 times [2023-08-29 19:47:20,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:20,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270633935] [2023-08-29 19:47:20,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:47:20,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:20,584 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:20,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-29 19:47:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:47:20,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:47:20,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:20,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:21,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270633935] [2023-08-29 19:47:21,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270633935] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:21,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:21,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:47:21,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112422463] [2023-08-29 19:47:21,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:21,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:47:21,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:21,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:47:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:47:21,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:21,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 232 transitions, 4493 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:21,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:21,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:21,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:27,926 INFO L130 PetriNetUnfolder]: 1008/1803 cut-off events. [2023-08-29 19:47:27,926 INFO L131 PetriNetUnfolder]: For 197782/197782 co-relation queries the response was YES. [2023-08-29 19:47:27,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20835 conditions, 1803 events. 1008/1803 cut-off events. For 197782/197782 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8652 event pairs, 12 based on Foata normal form. 56/1859 useless extension candidates. Maximal degree in co-relation 20743. Up to 536 conditions per place. [2023-08-29 19:47:27,948 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 101 selfloop transitions, 238 changer transitions 106/445 dead transitions. [2023-08-29 19:47:27,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 445 transitions, 10971 flow [2023-08-29 19:47:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-08-29 19:47:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-08-29 19:47:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 3749 transitions. [2023-08-29 19:47:27,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46490575396825395 [2023-08-29 19:47:27,985 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 3749 transitions. [2023-08-29 19:47:27,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 3749 transitions. [2023-08-29 19:47:27,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:27,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 3749 transitions. [2023-08-29 19:47:27,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 66.94642857142857) internal successors, (3749), 56 states have internal predecessors, (3749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:27,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 144.0) internal successors, (8208), 57 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:27,999 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 144.0) internal successors, (8208), 57 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:27,999 INFO L175 Difference]: Start difference. First operand has 236 places, 232 transitions, 4493 flow. Second operand 56 states and 3749 transitions. [2023-08-29 19:47:27,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 445 transitions, 10971 flow [2023-08-29 19:47:28,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 445 transitions, 10291 flow, removed 313 selfloop flow, removed 9 redundant places. [2023-08-29 19:47:28,330 INFO L231 Difference]: Finished difference. Result has 310 places, 274 transitions, 6723 flow [2023-08-29 19:47:28,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=3813, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6723, PETRI_PLACES=310, PETRI_TRANSITIONS=274} [2023-08-29 19:47:28,331 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 286 predicate places. [2023-08-29 19:47:28,331 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 274 transitions, 6723 flow [2023-08-29 19:47:28,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:28,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:28,331 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:28,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-08-29 19:47:28,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:28,532 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:28,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1030732913, now seen corresponding path program 14 times [2023-08-29 19:47:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:28,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874619545] [2023-08-29 19:47:28,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:47:28,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:28,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:28,534 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:28,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-29 19:47:28,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:47:28,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:28,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:47:28,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:28,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:29,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:29,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874619545] [2023-08-29 19:47:29,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874619545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:29,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:29,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:47:29,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012830703] [2023-08-29 19:47:29,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:47:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:47:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:47:29,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:29,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 274 transitions, 6723 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:29,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:29,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:29,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:32,348 INFO L130 PetriNetUnfolder]: 1088/1963 cut-off events. [2023-08-29 19:47:32,348 INFO L131 PetriNetUnfolder]: For 381862/381862 co-relation queries the response was YES. [2023-08-29 19:47:32,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28381 conditions, 1963 events. 1088/1963 cut-off events. For 381862/381862 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9534 event pairs, 403 based on Foata normal form. 64/2027 useless extension candidates. Maximal degree in co-relation 28261. Up to 1641 conditions per place. [2023-08-29 19:47:32,372 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 290 selfloop transitions, 39 changer transitions 59/388 dead transitions. [2023-08-29 19:47:32,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 388 transitions, 11609 flow [2023-08-29 19:47:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-29 19:47:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-29 19:47:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2139 transitions. [2023-08-29 19:47:32,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641927083333333 [2023-08-29 19:47:32,376 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2139 transitions. [2023-08-29 19:47:32,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2139 transitions. [2023-08-29 19:47:32,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:32,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2139 transitions. [2023-08-29 19:47:32,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 66.84375) internal successors, (2139), 32 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:32,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 144.0) internal successors, (4752), 33 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:32,384 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 144.0) internal successors, (4752), 33 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:32,384 INFO L175 Difference]: Start difference. First operand has 310 places, 274 transitions, 6723 flow. Second operand 32 states and 2139 transitions. [2023-08-29 19:47:32,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 388 transitions, 11609 flow [2023-08-29 19:47:33,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 388 transitions, 9280 flow, removed 1020 selfloop flow, removed 27 redundant places. [2023-08-29 19:47:33,138 INFO L231 Difference]: Finished difference. Result has 334 places, 294 transitions, 6306 flow [2023-08-29 19:47:33,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4590, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6306, PETRI_PLACES=334, PETRI_TRANSITIONS=294} [2023-08-29 19:47:33,139 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 310 predicate places. [2023-08-29 19:47:33,139 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 294 transitions, 6306 flow [2023-08-29 19:47:33,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:33,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:33,139 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:33,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:33,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:33,341 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:33,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:33,342 INFO L85 PathProgramCache]: Analyzing trace with hash -229469181, now seen corresponding path program 15 times [2023-08-29 19:47:33,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:33,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667380950] [2023-08-29 19:47:33,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:47:33,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:33,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:33,343 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:33,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-29 19:47:33,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-29 19:47:33,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:33,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:47:33,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:33,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:34,272 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:34,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667380950] [2023-08-29 19:47:34,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667380950] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:34,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:34,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:47:34,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518835332] [2023-08-29 19:47:34,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:34,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:47:34,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:47:34,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:47:34,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:34,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 294 transitions, 6306 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:34,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:34,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:34,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:39,316 INFO L130 PetriNetUnfolder]: 1396/2571 cut-off events. [2023-08-29 19:47:39,317 INFO L131 PetriNetUnfolder]: For 697343/697343 co-relation queries the response was YES. [2023-08-29 19:47:39,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41070 conditions, 2571 events. 1396/2571 cut-off events. For 697343/697343 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13507 event pairs, 363 based on Foata normal form. 64/2635 useless extension candidates. Maximal degree in co-relation 40934. Up to 1456 conditions per place. [2023-08-29 19:47:39,346 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 327 selfloop transitions, 130 changer transitions 59/516 dead transitions. [2023-08-29 19:47:39,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 516 transitions, 15035 flow [2023-08-29 19:47:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-29 19:47:39,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-29 19:47:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3267 transitions. [2023-08-29 19:47:39,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630102040816326 [2023-08-29 19:47:39,351 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3267 transitions. [2023-08-29 19:47:39,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3267 transitions. [2023-08-29 19:47:39,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:39,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3267 transitions. [2023-08-29 19:47:39,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 66.6734693877551) internal successors, (3267), 49 states have internal predecessors, (3267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:39,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 144.0) internal successors, (7200), 50 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:39,363 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 144.0) internal successors, (7200), 50 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:39,363 INFO L175 Difference]: Start difference. First operand has 334 places, 294 transitions, 6306 flow. Second operand 49 states and 3267 transitions. [2023-08-29 19:47:39,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 516 transitions, 15035 flow [2023-08-29 19:47:40,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 516 transitions, 13607 flow, removed 695 selfloop flow, removed 11 redundant places. [2023-08-29 19:47:40,551 INFO L231 Difference]: Finished difference. Result has 398 places, 359 transitions, 8804 flow [2023-08-29 19:47:40,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=4878, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=8804, PETRI_PLACES=398, PETRI_TRANSITIONS=359} [2023-08-29 19:47:40,552 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 374 predicate places. [2023-08-29 19:47:40,552 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 359 transitions, 8804 flow [2023-08-29 19:47:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:40,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:40,553 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:40,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-29 19:47:40,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:40,762 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:40,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:40,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1192502667, now seen corresponding path program 16 times [2023-08-29 19:47:40,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:40,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251795243] [2023-08-29 19:47:40,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:47:40,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:40,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:40,764 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:40,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-29 19:47:40,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:47:40,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:40,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:47:40,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:41,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:41,725 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:41,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:41,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251795243] [2023-08-29 19:47:41,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251795243] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:41,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:41,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:47:41,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753145608] [2023-08-29 19:47:41,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:41,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:47:41,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:41,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:47:41,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:47:42,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:42,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 359 transitions, 8804 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:42,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:42,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:42,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:47:49,896 INFO L130 PetriNetUnfolder]: 2332/4355 cut-off events. [2023-08-29 19:47:49,896 INFO L131 PetriNetUnfolder]: For 1681131/1681131 co-relation queries the response was YES. [2023-08-29 19:47:49,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81980 conditions, 4355 events. 2332/4355 cut-off events. For 1681131/1681131 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 26278 event pairs, 153 based on Foata normal form. 72/4427 useless extension candidates. Maximal degree in co-relation 81817. Up to 1588 conditions per place. [2023-08-29 19:47:49,962 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 278 selfloop transitions, 487 changer transitions 69/834 dead transitions. [2023-08-29 19:47:49,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 834 transitions, 28072 flow [2023-08-29 19:47:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-08-29 19:47:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-08-29 19:47:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 4665 transitions. [2023-08-29 19:47:49,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46279761904761907 [2023-08-29 19:47:49,974 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 4665 transitions. [2023-08-29 19:47:49,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 4665 transitions. [2023-08-29 19:47:49,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:47:49,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 4665 transitions. [2023-08-29 19:47:49,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 66.64285714285714) internal successors, (4665), 70 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:50,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 144.0) internal successors, (10224), 71 states have internal predecessors, (10224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:50,003 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 144.0) internal successors, (10224), 71 states have internal predecessors, (10224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:50,003 INFO L175 Difference]: Start difference. First operand has 398 places, 359 transitions, 8804 flow. Second operand 70 states and 4665 transitions. [2023-08-29 19:47:50,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 834 transitions, 28072 flow [2023-08-29 19:47:53,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 834 transitions, 25143 flow, removed 1444 selfloop flow, removed 12 redundant places. [2023-08-29 19:47:53,255 INFO L231 Difference]: Finished difference. Result has 485 places, 623 transitions, 20447 flow [2023-08-29 19:47:53,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=6207, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=20447, PETRI_PLACES=485, PETRI_TRANSITIONS=623} [2023-08-29 19:47:53,255 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 461 predicate places. [2023-08-29 19:47:53,255 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 623 transitions, 20447 flow [2023-08-29 19:47:53,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:53,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:47:53,256 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:47:53,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-08-29 19:47:53,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:53,465 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:47:53,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:47:53,466 INFO L85 PathProgramCache]: Analyzing trace with hash -314903001, now seen corresponding path program 17 times [2023-08-29 19:47:53,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:47:53,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012221810] [2023-08-29 19:47:53,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:47:53,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:47:53,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:47:53,467 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:47:53,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-29 19:47:53,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-29 19:47:53,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:47:53,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:47:53,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:47:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:53,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:47:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:47:54,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:47:54,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012221810] [2023-08-29 19:47:54,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012221810] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:47:54,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:47:54,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:47:54,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754859724] [2023-08-29 19:47:54,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:47:54,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:47:54,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:47:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:47:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:47:54,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:47:54,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 623 transitions, 20447 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:47:54,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:47:54,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:47:54,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:06,659 INFO L130 PetriNetUnfolder]: 2904/5379 cut-off events. [2023-08-29 19:48:06,659 INFO L131 PetriNetUnfolder]: For 3037348/3037348 co-relation queries the response was YES. [2023-08-29 19:48:06,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121235 conditions, 5379 events. 2904/5379 cut-off events. For 3037348/3037348 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 32949 event pairs, 53 based on Foata normal form. 104/5483 useless extension candidates. Maximal degree in co-relation 121041. Up to 2040 conditions per place. [2023-08-29 19:48:06,746 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 269 selfloop transitions, 680 changer transitions 51/1000 dead transitions. [2023-08-29 19:48:06,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1000 transitions, 43094 flow [2023-08-29 19:48:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-08-29 19:48:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-08-29 19:48:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 5017 transitions. [2023-08-29 19:48:06,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.464537037037037 [2023-08-29 19:48:06,751 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 5017 transitions. [2023-08-29 19:48:06,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 5017 transitions. [2023-08-29 19:48:06,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:06,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 5017 transitions. [2023-08-29 19:48:06,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 66.89333333333333) internal successors, (5017), 75 states have internal predecessors, (5017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 144.0) internal successors, (10944), 76 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,767 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 144.0) internal successors, (10944), 76 states have internal predecessors, (10944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:06,767 INFO L175 Difference]: Start difference. First operand has 485 places, 623 transitions, 20447 flow. Second operand 75 states and 5017 transitions. [2023-08-29 19:48:06,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1000 transitions, 43094 flow [2023-08-29 19:48:13,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 1000 transitions, 29040 flow, removed 6947 selfloop flow, removed 26 redundant places. [2023-08-29 19:48:13,233 INFO L231 Difference]: Finished difference. Result has 547 places, 783 transitions, 23132 flow [2023-08-29 19:48:13,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=10494, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=516, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=23132, PETRI_PLACES=547, PETRI_TRANSITIONS=783} [2023-08-29 19:48:13,234 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 523 predicate places. [2023-08-29 19:48:13,234 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 783 transitions, 23132 flow [2023-08-29 19:48:13,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:13,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:13,234 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:48:13,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-08-29 19:48:13,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:48:13,437 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:48:13,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:13,437 INFO L85 PathProgramCache]: Analyzing trace with hash -314878821, now seen corresponding path program 18 times [2023-08-29 19:48:13,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:48:13,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814980725] [2023-08-29 19:48:13,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:48:13,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:48:13,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:48:13,438 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:48:13,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-29 19:48:13,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-08-29 19:48:13,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:48:13,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 19:48:13,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:48:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:13,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:48:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 19:48:14,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:48:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814980725] [2023-08-29 19:48:14,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814980725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:48:14,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:48:14,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2023-08-29 19:48:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517707694] [2023-08-29 19:48:14,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:48:14,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 19:48:14,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:48:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 19:48:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2023-08-29 19:48:14,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:48:14,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 783 transitions, 23132 flow. Second operand has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:14,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:14,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:48:14,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:24,083 INFO L130 PetriNetUnfolder]: 3388/6243 cut-off events. [2023-08-29 19:48:24,084 INFO L131 PetriNetUnfolder]: For 3924993/3924993 co-relation queries the response was YES. [2023-08-29 19:48:24,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127181 conditions, 6243 events. 3388/6243 cut-off events. For 3924993/3924993 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 38988 event pairs, 41 based on Foata normal form. 116/6359 useless extension candidates. Maximal degree in co-relation 126970. Up to 2132 conditions per place. [2023-08-29 19:48:24,192 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 202 selfloop transitions, 805 changer transitions 110/1117 dead transitions. [2023-08-29 19:48:24,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 1117 transitions, 38137 flow [2023-08-29 19:48:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-29 19:48:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-29 19:48:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3883 transitions. [2023-08-29 19:48:24,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46491858237547895 [2023-08-29 19:48:24,197 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3883 transitions. [2023-08-29 19:48:24,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3883 transitions. [2023-08-29 19:48:24,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:24,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3883 transitions. [2023-08-29 19:48:24,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 66.94827586206897) internal successors, (3883), 58 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:24,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 144.0) internal successors, (8496), 59 states have internal predecessors, (8496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:24,208 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 144.0) internal successors, (8496), 59 states have internal predecessors, (8496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:24,208 INFO L175 Difference]: Start difference. First operand has 547 places, 783 transitions, 23132 flow. Second operand 58 states and 3883 transitions. [2023-08-29 19:48:24,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 1117 transitions, 38137 flow [2023-08-29 19:48:34,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 1117 transitions, 23757 flow, removed 6787 selfloop flow, removed 34 redundant places. [2023-08-29 19:48:34,278 INFO L231 Difference]: Finished difference. Result has 573 places, 917 transitions, 17319 flow [2023-08-29 19:48:34,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=12607, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=653, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=17319, PETRI_PLACES=573, PETRI_TRANSITIONS=917} [2023-08-29 19:48:34,280 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 549 predicate places. [2023-08-29 19:48:34,280 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 917 transitions, 17319 flow [2023-08-29 19:48:34,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 63.3125) internal successors, (2026), 32 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:34,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:48:34,281 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:48:34,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-08-29 19:48:34,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:48:34,490 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:48:34,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:48:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash 405493581, now seen corresponding path program 19 times [2023-08-29 19:48:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:48:34,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508104257] [2023-08-29 19:48:34,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:48:34,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:48:34,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:48:34,492 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:48:34,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-08-29 19:48:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 19:48:34,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-29 19:48:34,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:48:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:48:35,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:48:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:48:36,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:48:36,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508104257] [2023-08-29 19:48:36,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508104257] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:48:36,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:48:36,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-29 19:48:36,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849671181] [2023-08-29 19:48:36,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:48:36,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-29 19:48:36,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:48:36,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-29 19:48:36,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=2881, Unknown=0, NotChecked=0, Total=3306 [2023-08-29 19:48:38,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:48:38,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 917 transitions, 17319 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:38,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:48:38,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:48:38,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:48:51,660 INFO L130 PetriNetUnfolder]: 3716/6899 cut-off events. [2023-08-29 19:48:51,661 INFO L131 PetriNetUnfolder]: For 4191633/4191633 co-relation queries the response was YES. [2023-08-29 19:48:51,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121025 conditions, 6899 events. 3716/6899 cut-off events. For 4191633/4191633 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 44257 event pairs, 1305 based on Foata normal form. 56/6955 useless extension candidates. Maximal degree in co-relation 120814. Up to 5013 conditions per place. [2023-08-29 19:48:51,772 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 854 selfloop transitions, 243 changer transitions 123/1220 dead transitions. [2023-08-29 19:48:51,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 1220 transitions, 30192 flow [2023-08-29 19:48:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-29 19:48:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-29 19:48:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 4256 transitions. [2023-08-29 19:48:51,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2023-08-29 19:48:51,775 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 4256 transitions. [2023-08-29 19:48:51,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 4256 transitions. [2023-08-29 19:48:51,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:48:51,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 4256 transitions. [2023-08-29 19:48:51,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 66.5) internal successors, (4256), 64 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:51,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 144.0) internal successors, (9360), 65 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:51,788 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 144.0) internal successors, (9360), 65 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:48:51,788 INFO L175 Difference]: Start difference. First operand has 573 places, 917 transitions, 17319 flow. Second operand 64 states and 4256 transitions. [2023-08-29 19:48:51,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 1220 transitions, 30192 flow [2023-08-29 19:49:01,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1220 transitions, 28495 flow, removed 493 selfloop flow, removed 28 redundant places. [2023-08-29 19:49:01,322 INFO L231 Difference]: Finished difference. Result has 630 places, 1000 transitions, 19551 flow [2023-08-29 19:49:01,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=15698, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=917, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=19551, PETRI_PLACES=630, PETRI_TRANSITIONS=1000} [2023-08-29 19:49:01,323 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 606 predicate places. [2023-08-29 19:49:01,323 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 1000 transitions, 19551 flow [2023-08-29 19:49:01,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:49:01,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:49:01,324 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:49:01,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-08-29 19:49:01,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:49:01,524 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:49:01,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:49:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1316042347, now seen corresponding path program 20 times [2023-08-29 19:49:01,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:49:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814079934] [2023-08-29 19:49:01,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 19:49:01,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:49:01,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:49:01,526 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:49:01,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-08-29 19:49:01,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 19:49:01,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:49:01,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-29 19:49:01,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:49:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:49:02,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:49:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:49:03,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:49:03,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814079934] [2023-08-29 19:49:03,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814079934] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:49:03,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:49:03,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-29 19:49:03,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638544207] [2023-08-29 19:49:03,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:49:03,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-29 19:49:03,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:49:03,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-29 19:49:03,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2917, Unknown=0, NotChecked=0, Total=3306 [2023-08-29 19:49:04,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:49:04,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 1000 transitions, 19551 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:49:04,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:49:04,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:49:04,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:49:27,038 INFO L130 PetriNetUnfolder]: 4524/8499 cut-off events. [2023-08-29 19:49:27,038 INFO L131 PetriNetUnfolder]: For 5851504/5851504 co-relation queries the response was YES. [2023-08-29 19:49:27,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163947 conditions, 8499 events. 4524/8499 cut-off events. For 5851504/5851504 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 56117 event pairs, 916 based on Foata normal form. 56/8555 useless extension candidates. Maximal degree in co-relation 163713. Up to 3465 conditions per place. [2023-08-29 19:49:27,340 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 775 selfloop transitions, 636 changer transitions 117/1528 dead transitions. [2023-08-29 19:49:27,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 728 places, 1528 transitions, 44907 flow [2023-08-29 19:49:27,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-08-29 19:49:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2023-08-29 19:49:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 6574 transitions. [2023-08-29 19:49:27,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46113916947250283 [2023-08-29 19:49:27,348 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 6574 transitions. [2023-08-29 19:49:27,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 6574 transitions. [2023-08-29 19:49:27,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:49:27,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 6574 transitions. [2023-08-29 19:49:27,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 66.4040404040404) internal successors, (6574), 99 states have internal predecessors, (6574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:49:27,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 144.0) internal successors, (14400), 100 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:49:27,371 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 144.0) internal successors, (14400), 100 states have internal predecessors, (14400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:49:27,371 INFO L175 Difference]: Start difference. First operand has 630 places, 1000 transitions, 19551 flow. Second operand 99 states and 6574 transitions. [2023-08-29 19:49:27,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 728 places, 1528 transitions, 44907 flow [2023-08-29 19:49:45,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 1528 transitions, 42364 flow, removed 1167 selfloop flow, removed 22 redundant places. [2023-08-29 19:49:45,498 INFO L231 Difference]: Finished difference. Result has 729 places, 1210 transitions, 29518 flow [2023-08-29 19:49:45,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=17738, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=493, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=29518, PETRI_PLACES=729, PETRI_TRANSITIONS=1210} [2023-08-29 19:49:45,499 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 705 predicate places. [2023-08-29 19:49:45,500 INFO L495 AbstractCegarLoop]: Abstraction has has 729 places, 1210 transitions, 29518 flow [2023-08-29 19:49:45,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:49:45,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:49:45,500 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:49:45,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-08-29 19:49:45,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:49:45,705 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:49:45,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:49:45,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1060664077, now seen corresponding path program 21 times [2023-08-29 19:49:45,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:49:45,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840635476] [2023-08-29 19:49:45,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 19:49:45,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:49:45,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:49:45,707 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:49:45,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-08-29 19:49:45,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-08-29 19:49:45,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:49:45,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-29 19:49:45,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:49:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:49:46,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:49:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:49:48,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:49:48,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840635476] [2023-08-29 19:49:48,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840635476] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:49:48,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:49:48,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-29 19:49:48,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930668031] [2023-08-29 19:49:48,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:49:48,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-29 19:49:48,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:49:48,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-29 19:49:48,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2943, Unknown=0, NotChecked=0, Total=3306 [2023-08-29 19:49:49,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:49:49,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 1210 transitions, 29518 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:49:49,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:49:49,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:49:49,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:50:22,625 INFO L130 PetriNetUnfolder]: 5308/10051 cut-off events. [2023-08-29 19:50:22,626 INFO L131 PetriNetUnfolder]: For 9632753/9632753 co-relation queries the response was YES. [2023-08-29 19:50:22,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224558 conditions, 10051 events. 5308/10051 cut-off events. For 9632753/9632753 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 68635 event pairs, 574 based on Foata normal form. 56/10107 useless extension candidates. Maximal degree in co-relation 224300. Up to 3400 conditions per place. [2023-08-29 19:50:22,817 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 717 selfloop transitions, 1008 changer transitions 125/1850 dead transitions. [2023-08-29 19:50:22,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 844 places, 1850 transitions, 62454 flow [2023-08-29 19:50:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-08-29 19:50:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-08-29 19:50:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 8302 transitions. [2023-08-29 19:50:22,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612222222222222 [2023-08-29 19:50:22,824 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 8302 transitions. [2023-08-29 19:50:22,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 8302 transitions. [2023-08-29 19:50:22,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:50:22,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 8302 transitions. [2023-08-29 19:50:22,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 66.416) internal successors, (8302), 125 states have internal predecessors, (8302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:50:22,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 144.0) internal successors, (18144), 126 states have internal predecessors, (18144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:50:22,847 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 144.0) internal successors, (18144), 126 states have internal predecessors, (18144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:50:22,847 INFO L175 Difference]: Start difference. First operand has 729 places, 1210 transitions, 29518 flow. Second operand 125 states and 8302 transitions. [2023-08-29 19:50:22,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 844 places, 1850 transitions, 62454 flow [2023-08-29 19:50:51,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 1850 transitions, 55418 flow, removed 3308 selfloop flow, removed 32 redundant places. [2023-08-29 19:50:51,683 INFO L231 Difference]: Finished difference. Result has 852 places, 1440 transitions, 38666 flow [2023-08-29 19:50:51,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=21496, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=828, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=125, PETRI_FLOW=38666, PETRI_PLACES=852, PETRI_TRANSITIONS=1440} [2023-08-29 19:50:51,684 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 828 predicate places. [2023-08-29 19:50:51,684 INFO L495 AbstractCegarLoop]: Abstraction has has 852 places, 1440 transitions, 38666 flow [2023-08-29 19:50:51,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:50:51,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:50:51,685 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:50:51,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-08-29 19:50:51,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:50:51,895 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:50:51,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:50:51,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1330824259, now seen corresponding path program 22 times [2023-08-29 19:50:51,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:50:51,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466439488] [2023-08-29 19:50:51,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 19:50:51,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:50:51,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:50:51,896 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:50:51,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-08-29 19:50:51,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 19:50:51,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:50:51,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-29 19:50:51,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:50:52,418 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:50:52,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:50:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:50:54,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:50:54,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466439488] [2023-08-29 19:50:54,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466439488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:50:54,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:50:54,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-29 19:50:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348720103] [2023-08-29 19:50:54,357 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:50:54,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-29 19:50:54,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:50:54,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-29 19:50:54,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2943, Unknown=0, NotChecked=0, Total=3306 [2023-08-29 19:50:55,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:50:55,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 1440 transitions, 38666 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:50:55,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:50:55,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:50:55,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:51:50,685 INFO L130 PetriNetUnfolder]: 5892/11171 cut-off events. [2023-08-29 19:51:50,686 INFO L131 PetriNetUnfolder]: For 15394574/15394574 co-relation queries the response was YES. [2023-08-29 19:51:50,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287963 conditions, 11171 events. 5892/11171 cut-off events. For 15394574/15394574 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 77702 event pairs, 162 based on Foata normal form. 96/11267 useless extension candidates. Maximal degree in co-relation 287672. Up to 3816 conditions per place. [2023-08-29 19:51:50,980 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 536 selfloop transitions, 1392 changer transitions 141/2069 dead transitions. [2023-08-29 19:51:50,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 972 places, 2069 transitions, 78283 flow [2023-08-29 19:51:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-08-29 19:51:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2023-08-29 19:51:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 9845 transitions. [2023-08-29 19:51:50,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619463213213213 [2023-08-29 19:51:50,988 INFO L72 ComplementDD]: Start complementDD. Operand 148 states and 9845 transitions. [2023-08-29 19:51:50,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 9845 transitions. [2023-08-29 19:51:50,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:51:50,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 148 states and 9845 transitions. [2023-08-29 19:51:50,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 149 states, 148 states have (on average 66.52027027027027) internal successors, (9845), 148 states have internal predecessors, (9845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:51:51,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 149 states, 149 states have (on average 144.0) internal successors, (21456), 149 states have internal predecessors, (21456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:51:51,013 INFO L81 ComplementDD]: Finished complementDD. Result has 149 states, 149 states have (on average 144.0) internal successors, (21456), 149 states have internal predecessors, (21456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:51:51,013 INFO L175 Difference]: Start difference. First operand has 852 places, 1440 transitions, 38666 flow. Second operand 148 states and 9845 transitions. [2023-08-29 19:51:51,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 972 places, 2069 transitions, 78283 flow [2023-08-29 19:52:50,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 930 places, 2069 transitions, 69557 flow, removed 4145 selfloop flow, removed 42 redundant places. [2023-08-29 19:52:50,681 INFO L231 Difference]: Finished difference. Result has 979 places, 1612 transitions, 48883 flow [2023-08-29 19:52:50,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=26326, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=148, PETRI_FLOW=48883, PETRI_PLACES=979, PETRI_TRANSITIONS=1612} [2023-08-29 19:52:50,684 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 955 predicate places. [2023-08-29 19:52:50,684 INFO L495 AbstractCegarLoop]: Abstraction has has 979 places, 1612 transitions, 48883 flow [2023-08-29 19:52:50,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:52:50,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:52:50,685 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:52:50,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-08-29 19:52:50,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:52:50,895 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:52:50,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:52:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1456761549, now seen corresponding path program 23 times [2023-08-29 19:52:50,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:52:50,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702240893] [2023-08-29 19:52:50,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 19:52:50,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:52:50,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:52:50,897 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:52:50,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-08-29 19:52:51,032 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-08-29 19:52:51,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:52:51,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-29 19:52:51,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:52:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:52:51,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:52:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:52:53,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:52:53,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702240893] [2023-08-29 19:52:53,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702240893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:52:53,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:52:53,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-29 19:52:53,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352060850] [2023-08-29 19:52:53,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:52:53,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-29 19:52:53,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:52:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-29 19:52:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2875, Unknown=0, NotChecked=0, Total=3306 [2023-08-29 19:52:54,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:52:54,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 979 places, 1612 transitions, 48883 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:52:54,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:52:54,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:52:54,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:53:35,077 INFO L130 PetriNetUnfolder]: 5712/10827 cut-off events. [2023-08-29 19:53:35,077 INFO L131 PetriNetUnfolder]: For 20580726/20580726 co-relation queries the response was YES. [2023-08-29 19:53:35,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303749 conditions, 10827 events. 5712/10827 cut-off events. For 20580726/20580726 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 75694 event pairs, 40 based on Foata normal form. 88/10915 useless extension candidates. Maximal degree in co-relation 303427. Up to 3620 conditions per place. [2023-08-29 19:53:35,367 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 313 selfloop transitions, 1399 changer transitions 210/1922 dead transitions. [2023-08-29 19:53:35,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1054 places, 1922 transitions, 66378 flow [2023-08-29 19:53:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-08-29 19:53:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2023-08-29 19:53:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 7207 transitions. [2023-08-29 19:53:35,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634130658436214 [2023-08-29 19:53:35,372 INFO L72 ComplementDD]: Start complementDD. Operand 108 states and 7207 transitions. [2023-08-29 19:53:35,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 7207 transitions. [2023-08-29 19:53:35,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:53:35,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 108 states and 7207 transitions. [2023-08-29 19:53:35,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 109 states, 108 states have (on average 66.73148148148148) internal successors, (7207), 108 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:53:35,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 109 states, 109 states have (on average 144.0) internal successors, (15696), 109 states have internal predecessors, (15696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:53:35,387 INFO L81 ComplementDD]: Finished complementDD. Result has 109 states, 109 states have (on average 144.0) internal successors, (15696), 109 states have internal predecessors, (15696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:53:35,388 INFO L175 Difference]: Start difference. First operand has 979 places, 1612 transitions, 48883 flow. Second operand 108 states and 7207 transitions. [2023-08-29 19:53:35,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1054 places, 1922 transitions, 66378 flow [2023-08-29 19:54:55,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 978 places, 1922 transitions, 55654 flow, removed 4908 selfloop flow, removed 76 redundant places. [2023-08-29 19:54:55,905 INFO L231 Difference]: Finished difference. Result has 995 places, 1561 transitions, 37047 flow [2023-08-29 19:54:55,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=30578, PETRI_DIFFERENCE_MINUEND_PLACES=871, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1369, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=108, PETRI_FLOW=37047, PETRI_PLACES=995, PETRI_TRANSITIONS=1561} [2023-08-29 19:54:55,907 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 971 predicate places. [2023-08-29 19:54:55,907 INFO L495 AbstractCegarLoop]: Abstraction has has 995 places, 1561 transitions, 37047 flow [2023-08-29 19:54:55,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:54:55,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:54:55,908 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:54:55,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-08-29 19:54:56,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:54:56,108 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:54:56,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:54:56,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1252850063, now seen corresponding path program 24 times [2023-08-29 19:54:56,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:54:56,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973341666] [2023-08-29 19:54:56,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 19:54:56,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:54:56,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:54:56,110 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:54:56,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-08-29 19:54:56,238 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-08-29 19:54:56,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 19:54:56,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-29 19:54:56,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 19:54:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:54:56,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 19:54:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 19:54:58,606 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 19:54:58,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973341666] [2023-08-29 19:54:58,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973341666] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 19:54:58,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 19:54:58,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2023-08-29 19:54:58,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230535881] [2023-08-29 19:54:58,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 19:54:58,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-29 19:54:58,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 19:54:58,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-29 19:54:58,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2845, Unknown=0, NotChecked=0, Total=3306 [2023-08-29 19:54:59,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 144 [2023-08-29 19:54:59,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 995 places, 1561 transitions, 37047 flow. Second operand has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:54:59,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 19:54:59,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 144 [2023-08-29 19:54:59,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 19:55:22,786 INFO L130 PetriNetUnfolder]: 5916/11167 cut-off events. [2023-08-29 19:55:22,786 INFO L131 PetriNetUnfolder]: For 17709916/17709916 co-relation queries the response was YES. [2023-08-29 19:55:22,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292343 conditions, 11167 events. 5916/11167 cut-off events. For 17709916/17709916 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 77452 event pairs, 20 based on Foata normal form. 68/11235 useless extension candidates. Maximal degree in co-relation 292036. Up to 3664 conditions per place. [2023-08-29 19:55:23,054 INFO L137 encePairwiseOnDemand]: 139/144 looper letters, 256 selfloop transitions, 1465 changer transitions 170/1891 dead transitions. [2023-08-29 19:55:23,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 1891 transitions, 63061 flow [2023-08-29 19:55:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-08-29 19:55:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-08-29 19:55:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5880 transitions. [2023-08-29 19:55:23,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640151515151515 [2023-08-29 19:55:23,058 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5880 transitions. [2023-08-29 19:55:23,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5880 transitions. [2023-08-29 19:55:23,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 19:55:23,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5880 transitions. [2023-08-29 19:55:23,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 66.81818181818181) internal successors, (5880), 88 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:55:23,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 144.0) internal successors, (12816), 89 states have internal predecessors, (12816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:55:23,068 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 144.0) internal successors, (12816), 89 states have internal predecessors, (12816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:55:23,068 INFO L175 Difference]: Start difference. First operand has 995 places, 1561 transitions, 37047 flow. Second operand 88 states and 5880 transitions. [2023-08-29 19:55:23,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 1891 transitions, 63061 flow [2023-08-29 19:56:53,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 998 places, 1891 transitions, 57703 flow, removed 1547 selfloop flow, removed 84 redundant places. [2023-08-29 19:56:53,384 INFO L231 Difference]: Finished difference. Result has 1023 places, 1628 transitions, 42877 flow [2023-08-29 19:56:53,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=31805, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=42877, PETRI_PLACES=1023, PETRI_TRANSITIONS=1628} [2023-08-29 19:56:53,386 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 999 predicate places. [2023-08-29 19:56:53,386 INFO L495 AbstractCegarLoop]: Abstraction has has 1023 places, 1628 transitions, 42877 flow [2023-08-29 19:56:53,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 63.206896551724135) internal successors, (3666), 58 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 19:56:53,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 19:56:53,387 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 19:56:53,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-08-29 19:56:53,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:56:53,588 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-29 19:56:53,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 19:56:53,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1700047031, now seen corresponding path program 25 times [2023-08-29 19:56:53,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 19:56:53,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030455461] [2023-08-29 19:56:53,588 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 19:56:53,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:56:53,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 19:56:53,589 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 19:56:53,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-08-29 19:56:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 19:56:53,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 19:56:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 19:56:53,881 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-29 19:56:53,882 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 19:56:53,883 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-08-29 19:56:53,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-08-29 19:56:53,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-29 19:56:53,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-29 19:56:53,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-08-29 19:56:53,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-29 19:56:53,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-08-29 19:56:53,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-08-29 19:56:53,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-08-29 19:56:54,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 19:56:54,097 INFO L445 BasicCegarLoop]: Path program histogram: [25, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 19:56:54,101 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 19:56:54,101 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 19:56:54,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 07:56:54 BasicIcfg [2023-08-29 19:56:54,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 19:56:54,183 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 19:56:54,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 19:56:54,183 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 19:56:54,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 07:46:50" (3/4) ... [2023-08-29 19:56:54,188 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 19:56:54,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 19:56:54,190 INFO L158 Benchmark]: Toolchain (without parser) took 604712.66ms. Allocated memory was 65.0MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 36.1MB in the beginning and 2.2GB in the end (delta: -2.2GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-08-29 19:56:54,191 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:56:54,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.81ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 35.9MB in the beginning and 55.8MB in the end (delta: -19.9MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-08-29 19:56:54,191 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.31ms. Allocated memory is still 86.0MB. Free memory was 55.8MB in the beginning and 54.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:56:54,192 INFO L158 Benchmark]: Boogie Preprocessor took 56.52ms. Allocated memory is still 86.0MB. Free memory was 54.1MB in the beginning and 52.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 19:56:54,193 INFO L158 Benchmark]: RCFGBuilder took 432.43ms. Allocated memory is still 86.0MB. Free memory was 52.2MB in the beginning and 37.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 19:56:54,193 INFO L158 Benchmark]: TraceAbstraction took 603706.07ms. Allocated memory was 86.0MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 64.6MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-08-29 19:56:54,193 INFO L158 Benchmark]: Witness Printer took 6.36ms. Allocated memory is still 3.7GB. Free memory is still 2.2GB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 19:56:54,195 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 450.81ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 35.9MB in the beginning and 55.8MB in the end (delta: -19.9MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.31ms. Allocated memory is still 86.0MB. Free memory was 55.8MB in the beginning and 54.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.52ms. Allocated memory is still 86.0MB. Free memory was 54.1MB in the beginning and 52.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 432.43ms. Allocated memory is still 86.0MB. Free memory was 52.2MB in the beginning and 37.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 603706.07ms. Allocated memory was 86.0MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 64.6MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 6.36ms. Allocated memory is still 3.7GB. Free memory is still 2.2GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 75 PlacesBefore, 24 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1254 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 69 TotalNumberOfCompositions, 1134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 994, independent: 967, independent conditional: 0, independent unconditional: 967, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 657, independent: 645, independent conditional: 0, independent unconditional: 645, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 994, independent: 322, independent conditional: 0, independent unconditional: 322, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 657, unknown conditional: 0, unknown unconditional: 657] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=47, arg={0:0}, argc=47, argv={50:49}, argv={50:49}, i=3, id1={7:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-1] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=47, arg={0:0}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, argv={50:49}, i=3, id1={7:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=47, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, argv={50:49}, condI=0, i=7, id1={7:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=47, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, argv={50:49}, condI=0, condJ=1, i=45, id1={7:0}, id2={3:0}, j=46, k=20, k=20] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 8 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: 603.5s, OverallIterations: 33, TraceHistogramMax: 20, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 568.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 20523 SdHoareTripleChecker+Valid, 40.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20278 mSDsluCounter, 7796 SdHoareTripleChecker+Invalid, 35.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7734 mSDsCounter, 1522 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61405 IncrementalHoareTripleChecker+Invalid, 62937 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1522 mSolverCounterUnsat, 62 mSDtfsCounter, 61405 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2000 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 1739 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52756 ImplicationChecksByTransitivity, 182.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48883occurred in iteration=30, InterpolantAutomatonStates: 1215, 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: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 21.8s InterpolantComputationTime, 572 NumberOfCodeBlocks, 572 NumberOfCodeBlocksAsserted, 98 NumberOfCheckSat, 912 ConstructedInterpolants, 6 QuantifiedInterpolants, 7224 SizeOfPredicates, 285 NumberOfNonLiveVariables, 2901 ConjunctsInSsa, 414 ConjunctsInUnsatCore, 52 InterpolantComputations, 12 PerfectInterpolantSequences, 20/2540 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-29 19:56:54,224 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: UNKNOWN: Overapproximated counterexample