./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.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 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:39:14,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:39:14,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:39:14,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:39:14,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:39:14,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:39:14,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:39:14,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:39:14,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:39:14,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:39:14,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:39:14,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:39:14,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:39:14,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:39:14,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:39:14,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:39:14,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:39:14,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:39:14,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:39:14,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:39:14,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:39:14,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:39:14,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:39:14,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:39:14,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:39:14,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:39:14,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:39:14,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:39:14,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:39:14,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:39:14,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:39:14,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:39:14,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:39:14,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:39:14,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:39:14,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:39:14,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:39:14,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:39:14,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:39:14,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:39:14,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:39:14,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:39:14,585 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:39:14,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:39:14,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:39:14,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:39:14,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:39:14,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:39:14,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:39:14,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:39:14,589 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:39:14,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:39:14,590 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:39:14,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:39:14,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:39:14,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:39:14,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:39:14,591 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:39:14,591 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:39:14,591 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:39:14,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:39:14,591 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:39:14,592 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:39:14,592 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:39:14,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:39:14,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:39:14,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:39:14,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:39:14,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:39:14,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:39:14,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:39:14,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:39:14,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:39:14,594 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:39:14,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:39:14,594 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:39:14,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:39:14,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:39:14,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:39:14,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:39:14,928 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:39:14,928 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:39:14,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2023-08-31 23:39:16,030 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:39:16,319 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:39:16,319 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2023-08-31 23:39:16,329 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec12f962/e67b2fda8a214cfdaeb98967c81e21fc/FLAG381c1c43a [2023-08-31 23:39:16,343 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec12f962/e67b2fda8a214cfdaeb98967c81e21fc [2023-08-31 23:39:16,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:39:16,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:39:16,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:39:16,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:39:16,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:39:16,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:16,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f4d695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16, skipping insertion in model container [2023-08-31 23:39:16,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:16,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:39:16,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:39:16,517 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i[994,1007] [2023-08-31 23:39:16,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:39:16,782 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:39:16,804 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i[994,1007] [2023-08-31 23:39:16,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:39:16,929 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:39:16,929 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:39:16,935 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:39:16,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16 WrapperNode [2023-08-31 23:39:16,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:39:16,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:39:16,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:39:16,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:39:16,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:16,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,019 INFO L138 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 194 [2023-08-31 23:39:17,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:39:17,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:39:17,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:39:17,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:39:17,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,076 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:39:17,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:39:17,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:39:17,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:39:17,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (1/1) ... [2023-08-31 23:39:17,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:39:17,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:39:17,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:39:17,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:39:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 23:39:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:39:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:39:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:39:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:39:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:39:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:39:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:39:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:39:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:39:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:39:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:39:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-31 23:39:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-31 23:39:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:39:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:39:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:39:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:39:17,164 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:39:17,396 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:39:17,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:39:17,981 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:39:18,659 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:39:18,660 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:39:18,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:39:18 BoogieIcfgContainer [2023-08-31 23:39:18,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:39:18,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:39:18,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:39:18,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:39:18,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:39:16" (1/3) ... [2023-08-31 23:39:18,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e18f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:39:18, skipping insertion in model container [2023-08-31 23:39:18,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:39:16" (2/3) ... [2023-08-31 23:39:18,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e18f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:39:18, skipping insertion in model container [2023-08-31 23:39:18,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:39:18" (3/3) ... [2023-08-31 23:39:18,670 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2023-08-31 23:39:18,686 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:39:18,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2023-08-31 23:39:18,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:39:18,844 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:39:18,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 203 transitions, 426 flow [2023-08-31 23:39:19,016 INFO L130 PetriNetUnfolder]: 2/199 cut-off events. [2023-08-31 23:39:19,016 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:39:19,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 2/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 328 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-31 23:39:19,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 203 transitions, 426 flow [2023-08-31 23:39:19,035 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 199 transitions, 410 flow [2023-08-31 23:39:19,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:39:19,054 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 199 transitions, 410 flow [2023-08-31 23:39:19,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 199 transitions, 410 flow [2023-08-31 23:39:19,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 199 transitions, 410 flow [2023-08-31 23:39:19,109 INFO L130 PetriNetUnfolder]: 2/199 cut-off events. [2023-08-31 23:39:19,112 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:39:19,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 2/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 325 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-31 23:39:19,120 INFO L119 LiptonReduction]: Number of co-enabled transitions 10216 [2023-08-31 23:39:30,737 INFO L134 LiptonReduction]: Checked pairs total: 55615 [2023-08-31 23:39:30,737 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-31 23:39:30,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:39:30,761 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;@70ff9194, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:39:30,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-08-31 23:39:30,764 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:39:30,764 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:39:30,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:39:30,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:39:30,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:39:30,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:39:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1281, now seen corresponding path program 1 times [2023-08-31 23:39:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:39:30,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301382231] [2023-08-31 23:39:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:39:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:39:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:39:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:39:30,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:39:30,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301382231] [2023-08-31 23:39:30,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301382231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:39:30,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:39:30,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:39:30,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871002279] [2023-08-31 23:39:30,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:39:30,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:39:30,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:39:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:39:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:39:30,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 366 [2023-08-31 23:39:30,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:30,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:39:30,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 366 [2023-08-31 23:39:30,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:08,286 INFO L130 PetriNetUnfolder]: 241951/317300 cut-off events. [2023-08-31 23:40:08,286 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-31 23:40:08,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631380 conditions, 317300 events. 241951/317300 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 18073. Compared 2232899 event pairs, 241951 based on Foata normal form. 4320/142652 useless extension candidates. Maximal degree in co-relation 631368. Up to 312873 conditions per place. [2023-08-31 23:40:10,050 INFO L137 encePairwiseOnDemand]: 333/366 looper letters, 55 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2023-08-31 23:40:10,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 236 flow [2023-08-31 23:40:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:40:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:40:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 370 transitions. [2023-08-31 23:40:10,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505464480874317 [2023-08-31 23:40:10,063 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 370 transitions. [2023-08-31 23:40:10,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 370 transitions. [2023-08-31 23:40:10,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:10,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 370 transitions. [2023-08-31 23:40:10,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:10,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:10,077 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:10,078 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 192 flow. Second operand 2 states and 370 transitions. [2023-08-31 23:40:10,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 236 flow [2023-08-31 23:40:10,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:40:10,160 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 122 flow [2023-08-31 23:40:10,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2023-08-31 23:40:10,165 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -35 predicate places. [2023-08-31 23:40:10,165 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 122 flow [2023-08-31 23:40:10,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:10,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:10,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:40:10,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:40:10,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:40:10,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:10,167 INFO L85 PathProgramCache]: Analyzing trace with hash 39214187, now seen corresponding path program 1 times [2023-08-31 23:40:10,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609066450] [2023-08-31 23:40:10,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:10,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:10,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:10,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609066450] [2023-08-31 23:40:10,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609066450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:10,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:10,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:40:10,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652929339] [2023-08-31 23:40:10,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:10,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:40:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:10,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:40:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:40:10,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 366 [2023-08-31 23:40:10,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:10,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:10,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 366 [2023-08-31 23:40:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:36,302 INFO L130 PetriNetUnfolder]: 163615/219861 cut-off events. [2023-08-31 23:40:36,303 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:40:36,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438607 conditions, 219861 events. 163615/219861 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10616. Compared 1565539 event pairs, 97625 based on Foata normal form. 0/121370 useless extension candidates. Maximal degree in co-relation 438604. Up to 122981 conditions per place. [2023-08-31 23:40:37,563 INFO L137 encePairwiseOnDemand]: 345/366 looper letters, 68 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2023-08-31 23:40:37,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 326 flow [2023-08-31 23:40:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:40:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:40:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-31 23:40:37,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45264116575591984 [2023-08-31 23:40:37,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-31 23:40:37,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-31 23:40:37,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:37,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-31 23:40:37,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:37,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:37,579 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:37,579 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 122 flow. Second operand 3 states and 497 transitions. [2023-08-31 23:40:37,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 326 flow [2023-08-31 23:40:37,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:40:37,581 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 214 flow [2023-08-31 23:40:37,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-08-31 23:40:37,582 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -33 predicate places. [2023-08-31 23:40:37,583 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 214 flow [2023-08-31 23:40:37,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:37,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:37,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:40:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:40:37,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:40:37,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash 39214188, now seen corresponding path program 1 times [2023-08-31 23:40:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:37,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310789188] [2023-08-31 23:40:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:37,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:37,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310789188] [2023-08-31 23:40:37,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310789188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:37,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:37,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:40:37,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646826507] [2023-08-31 23:40:37,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:37,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:40:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:40:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:40:37,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-31 23:40:37,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:37,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:37,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-31 23:40:37,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:45,552 INFO L130 PetriNetUnfolder]: 42246/59359 cut-off events. [2023-08-31 23:40:45,552 INFO L131 PetriNetUnfolder]: For 15701/15701 co-relation queries the response was YES. [2023-08-31 23:40:45,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160105 conditions, 59359 events. 42246/59359 cut-off events. For 15701/15701 co-relation queries the response was YES. Maximal size of possible extension queue 3209. Compared 400453 event pairs, 33266 based on Foata normal form. 13376/63042 useless extension candidates. Maximal degree in co-relation 160100. Up to 56464 conditions per place. [2023-08-31 23:40:45,869 INFO L137 encePairwiseOnDemand]: 355/366 looper letters, 50 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-31 23:40:45,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 296 flow [2023-08-31 23:40:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:40:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:40:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-31 23:40:45,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307832422586521 [2023-08-31 23:40:45,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-31 23:40:45,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-31 23:40:45,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:45,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-31 23:40:45,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:45,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:45,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:45,875 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 214 flow. Second operand 3 states and 473 transitions. [2023-08-31 23:40:45,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 296 flow [2023-08-31 23:40:46,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:40:46,016 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 174 flow [2023-08-31 23:40:46,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-31 23:40:46,017 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-08-31 23:40:46,017 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 174 flow [2023-08-31 23:40:46,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:46,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:46,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:40:46,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:40:46,018 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:40:46,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:46,019 INFO L85 PathProgramCache]: Analyzing trace with hash -968223769, now seen corresponding path program 1 times [2023-08-31 23:40:46,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:46,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031872202] [2023-08-31 23:40:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:46,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:46,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:46,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031872202] [2023-08-31 23:40:46,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031872202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:46,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:46,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:40:46,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251108674] [2023-08-31 23:40:46,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:46,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:40:46,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:46,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:40:46,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:40:46,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-31 23:40:46,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:46,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:46,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-31 23:40:46,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:52,345 INFO L130 PetriNetUnfolder]: 35015/49232 cut-off events. [2023-08-31 23:40:52,346 INFO L131 PetriNetUnfolder]: For 5735/5783 co-relation queries the response was YES. [2023-08-31 23:40:52,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125876 conditions, 49232 events. 35015/49232 cut-off events. For 5735/5783 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 332825 event pairs, 9930 based on Foata normal form. 48/37720 useless extension candidates. Maximal degree in co-relation 125871. Up to 40604 conditions per place. [2023-08-31 23:40:52,613 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 85 selfloop transitions, 2 changer transitions 2/92 dead transitions. [2023-08-31 23:40:52,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 474 flow [2023-08-31 23:40:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:40:52,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:40:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-08-31 23:40:52,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45081967213114754 [2023-08-31 23:40:52,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-08-31 23:40:52,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-08-31 23:40:52,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:52,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-08-31 23:40:52,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:52,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:52,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:52,621 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 174 flow. Second operand 3 states and 495 transitions. [2023-08-31 23:40:52,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 474 flow [2023-08-31 23:40:52,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:40:52,623 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 173 flow [2023-08-31 23:40:52,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-31 23:40:52,624 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-08-31 23:40:52,625 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 173 flow [2023-08-31 23:40:52,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:52,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:52,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:40:52,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:40:52,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:40:52,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:52,626 INFO L85 PathProgramCache]: Analyzing trace with hash -257249967, now seen corresponding path program 1 times [2023-08-31 23:40:52,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:52,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728707346] [2023-08-31 23:40:52,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:52,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:52,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:52,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728707346] [2023-08-31 23:40:52,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728707346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:52,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:52,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:40:52,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575527311] [2023-08-31 23:40:52,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:52,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:40:52,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:40:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:40:52,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-31 23:40:52,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:52,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:52,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-31 23:40:52,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:40:59,188 INFO L130 PetriNetUnfolder]: 34038/48863 cut-off events. [2023-08-31 23:40:59,188 INFO L131 PetriNetUnfolder]: For 7461/7461 co-relation queries the response was YES. [2023-08-31 23:40:59,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125807 conditions, 48863 events. 34038/48863 cut-off events. For 7461/7461 co-relation queries the response was YES. Maximal size of possible extension queue 2774. Compared 339444 event pairs, 11946 based on Foata normal form. 0/37735 useless extension candidates. Maximal degree in co-relation 125802. Up to 35309 conditions per place. [2023-08-31 23:40:59,443 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 77 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-31 23:40:59,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 435 flow [2023-08-31 23:40:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:40:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:40:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-31 23:40:59,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-31 23:40:59,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-31 23:40:59,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-31 23:40:59,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:40:59,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-31 23:40:59,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,449 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 173 flow. Second operand 3 states and 488 transitions. [2023-08-31 23:40:59,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 435 flow [2023-08-31 23:40:59,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 429 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:40:59,454 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 182 flow [2023-08-31 23:40:59,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-31 23:40:59,455 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-08-31 23:40:59,455 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 182 flow [2023-08-31 23:40:59,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:40:59,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:40:59,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:40:59,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:40:59,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:40:59,457 INFO L85 PathProgramCache]: Analyzing trace with hash -257249715, now seen corresponding path program 1 times [2023-08-31 23:40:59,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:40:59,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228292657] [2023-08-31 23:40:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:40:59,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:40:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:40:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:40:59,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:40:59,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228292657] [2023-08-31 23:40:59,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228292657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:40:59,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:40:59,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:40:59,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522849330] [2023-08-31 23:40:59,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:40:59,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:40:59,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:40:59,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:40:59,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:40:59,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-31 23:40:59,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:40:59,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:40:59,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-31 23:40:59,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:06,431 INFO L130 PetriNetUnfolder]: 40320/56141 cut-off events. [2023-08-31 23:41:06,432 INFO L131 PetriNetUnfolder]: For 9184/9200 co-relation queries the response was YES. [2023-08-31 23:41:06,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146964 conditions, 56141 events. 40320/56141 cut-off events. For 9184/9200 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 356238 event pairs, 13860 based on Foata normal form. 16/44869 useless extension candidates. Maximal degree in co-relation 146958. Up to 52631 conditions per place. [2023-08-31 23:41:06,924 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 74 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-31 23:41:06,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 436 flow [2023-08-31 23:41:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:41:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:41:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-31 23:41:06,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43897996357012753 [2023-08-31 23:41:06,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-31 23:41:06,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-31 23:41:06,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:06,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-31 23:41:06,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:06,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:06,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:06,930 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 182 flow. Second operand 3 states and 482 transitions. [2023-08-31 23:41:06,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 436 flow [2023-08-31 23:41:06,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:41:06,939 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 208 flow [2023-08-31 23:41:06,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-31 23:41:06,940 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -42 predicate places. [2023-08-31 23:41:06,940 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 208 flow [2023-08-31 23:41:06,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:06,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:06,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:06,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:41:06,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:41:06,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:06,942 INFO L85 PathProgramCache]: Analyzing trace with hash 615192729, now seen corresponding path program 1 times [2023-08-31 23:41:06,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:06,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397258774] [2023-08-31 23:41:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:06,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:07,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397258774] [2023-08-31 23:41:07,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397258774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:07,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:07,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:41:07,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977023780] [2023-08-31 23:41:07,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:07,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:41:07,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:07,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:41:07,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:41:07,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 366 [2023-08-31 23:41:07,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:07,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:07,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 366 [2023-08-31 23:41:07,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:13,939 INFO L130 PetriNetUnfolder]: 40068/55841 cut-off events. [2023-08-31 23:41:13,940 INFO L131 PetriNetUnfolder]: For 11013/11141 co-relation queries the response was YES. [2023-08-31 23:41:14,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150153 conditions, 55841 events. 40068/55841 cut-off events. For 11013/11141 co-relation queries the response was YES. Maximal size of possible extension queue 2461. Compared 356604 event pairs, 11139 based on Foata normal form. 96/44845 useless extension candidates. Maximal degree in co-relation 150146. Up to 51165 conditions per place. [2023-08-31 23:41:14,242 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 78 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-31 23:41:14,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 468 flow [2023-08-31 23:41:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:41:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:41:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-31 23:41:14,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43897996357012753 [2023-08-31 23:41:14,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-31 23:41:14,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-31 23:41:14,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:14,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-31 23:41:14,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:14,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:14,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:14,249 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 208 flow. Second operand 3 states and 482 transitions. [2023-08-31 23:41:14,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 468 flow [2023-08-31 23:41:14,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:41:14,255 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 228 flow [2023-08-31 23:41:14,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-31 23:41:14,256 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -40 predicate places. [2023-08-31 23:41:14,256 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 228 flow [2023-08-31 23:41:14,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:14,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:14,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:14,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:41:14,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:41:14,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 48665703, now seen corresponding path program 1 times [2023-08-31 23:41:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398801590] [2023-08-31 23:41:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398801590] [2023-08-31 23:41:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398801590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:14,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:41:14,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797665066] [2023-08-31 23:41:14,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:14,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:41:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:14,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:41:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:41:14,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 366 [2023-08-31 23:41:14,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:14,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:14,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 366 [2023-08-31 23:41:14,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:21,478 INFO L130 PetriNetUnfolder]: 38056/53455 cut-off events. [2023-08-31 23:41:21,479 INFO L131 PetriNetUnfolder]: For 16011/16011 co-relation queries the response was YES. [2023-08-31 23:41:21,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149801 conditions, 53455 events. 38056/53455 cut-off events. For 16011/16011 co-relation queries the response was YES. Maximal size of possible extension queue 2464. Compared 344599 event pairs, 13692 based on Foata normal form. 0/42927 useless extension candidates. Maximal degree in co-relation 149793. Up to 20966 conditions per place. [2023-08-31 23:41:21,786 INFO L137 encePairwiseOnDemand]: 354/366 looper letters, 80 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2023-08-31 23:41:21,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 547 flow [2023-08-31 23:41:21,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:41:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:41:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-08-31 23:41:21,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005464480874317 [2023-08-31 23:41:21,789 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-08-31 23:41:21,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-08-31 23:41:21,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:21,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-08-31 23:41:21,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:21,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 366.0) internal successors, (2196), 6 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:21,796 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 366.0) internal successors, (2196), 6 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:21,796 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 228 flow. Second operand 5 states and 733 transitions. [2023-08-31 23:41:21,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 547 flow [2023-08-31 23:41:21,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 96 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:41:21,800 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 318 flow [2023-08-31 23:41:21,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-08-31 23:41:21,801 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -36 predicate places. [2023-08-31 23:41:21,801 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 318 flow [2023-08-31 23:41:21,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:21,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:21,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:21,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:41:21,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:41:21,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash 615192478, now seen corresponding path program 1 times [2023-08-31 23:41:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:21,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658949519] [2023-08-31 23:41:21,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:21,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658949519] [2023-08-31 23:41:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658949519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:22,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:22,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:41:22,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649488211] [2023-08-31 23:41:22,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:22,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:41:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:41:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:41:22,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-31 23:41:22,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:22,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:22,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-31 23:41:22,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:28,870 INFO L130 PetriNetUnfolder]: 36314/51473 cut-off events. [2023-08-31 23:41:28,870 INFO L131 PetriNetUnfolder]: For 44456/44456 co-relation queries the response was YES. [2023-08-31 23:41:29,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159448 conditions, 51473 events. 36314/51473 cut-off events. For 44456/44456 co-relation queries the response was YES. Maximal size of possible extension queue 2441. Compared 337422 event pairs, 15784 based on Foata normal form. 240/45870 useless extension candidates. Maximal degree in co-relation 159438. Up to 38172 conditions per place. [2023-08-31 23:41:29,190 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 76 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-31 23:41:29,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 550 flow [2023-08-31 23:41:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:41:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:41:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 621 transitions. [2023-08-31 23:41:29,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418032786885246 [2023-08-31 23:41:29,192 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 621 transitions. [2023-08-31 23:41:29,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 621 transitions. [2023-08-31 23:41:29,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:29,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 621 transitions. [2023-08-31 23:41:29,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:29,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:29,197 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:29,197 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 318 flow. Second operand 4 states and 621 transitions. [2023-08-31 23:41:29,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 550 flow [2023-08-31 23:41:29,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 539 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:41:29,642 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 313 flow [2023-08-31 23:41:29,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-31 23:41:29,643 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -37 predicate places. [2023-08-31 23:41:29,644 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 313 flow [2023-08-31 23:41:29,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:29,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:29,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:29,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:41:29,645 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:41:29,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash 615065257, now seen corresponding path program 1 times [2023-08-31 23:41:29,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:29,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989839017] [2023-08-31 23:41:29,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:29,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:29,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989839017] [2023-08-31 23:41:29,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989839017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:29,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:29,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:41:29,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121757928] [2023-08-31 23:41:29,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:29,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:41:29,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:29,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:41:29,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:41:29,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-31 23:41:29,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 313 flow. Second operand 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) [2023-08-31 23:41:29,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:29,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-31 23:41:29,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:36,532 INFO L130 PetriNetUnfolder]: 35844/50649 cut-off events. [2023-08-31 23:41:36,532 INFO L131 PetriNetUnfolder]: For 48872/48960 co-relation queries the response was YES. [2023-08-31 23:41:36,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157733 conditions, 50649 events. 35844/50649 cut-off events. For 48872/48960 co-relation queries the response was YES. Maximal size of possible extension queue 2444. Compared 342993 event pairs, 10599 based on Foata normal form. 160/44934 useless extension candidates. Maximal degree in co-relation 157724. Up to 41180 conditions per place. [2023-08-31 23:41:36,848 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 105 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-31 23:41:36,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 767 flow [2023-08-31 23:41:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:41:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:41:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-31 23:41:36,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453551912568306 [2023-08-31 23:41:36,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-31 23:41:36,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-31 23:41:36,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:36,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-31 23:41:36,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:36,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:36,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:36,852 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 313 flow. Second operand 3 states and 489 transitions. [2023-08-31 23:41:36,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 767 flow [2023-08-31 23:41:37,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 112 transitions, 757 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:41:37,240 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 315 flow [2023-08-31 23:41:37,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2023-08-31 23:41:37,241 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -36 predicate places. [2023-08-31 23:41:37,241 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 315 flow [2023-08-31 23:41:37,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-08-31 23:41:37,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:37,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:37,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:41:37,242 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:41:37,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1887153147, now seen corresponding path program 1 times [2023-08-31 23:41:37,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380081064] [2023-08-31 23:41:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:37,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:37,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380081064] [2023-08-31 23:41:37,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380081064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:37,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:37,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:41:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990786902] [2023-08-31 23:41:37,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:37,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:41:37,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:41:37,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:41:37,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 366 [2023-08-31 23:41:37,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:37,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:37,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 366 [2023-08-31 23:41:37,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:44,110 INFO L130 PetriNetUnfolder]: 35969/51020 cut-off events. [2023-08-31 23:41:44,110 INFO L131 PetriNetUnfolder]: For 40834/40834 co-relation queries the response was YES. [2023-08-31 23:41:44,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163665 conditions, 51020 events. 35969/51020 cut-off events. For 40834/40834 co-relation queries the response was YES. Maximal size of possible extension queue 2438. Compared 334927 event pairs, 15604 based on Foata normal form. 36/45213 useless extension candidates. Maximal degree in co-relation 163655. Up to 37884 conditions per place. [2023-08-31 23:41:44,456 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 75 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2023-08-31 23:41:44,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 546 flow [2023-08-31 23:41:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:41:44,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:41:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-31 23:41:44,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435336976320583 [2023-08-31 23:41:44,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-31 23:41:44,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-31 23:41:44,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:44,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-31 23:41:44,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:44,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:44,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:44,462 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 315 flow. Second operand 3 states and 487 transitions. [2023-08-31 23:41:44,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 546 flow [2023-08-31 23:41:45,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:41:45,094 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 328 flow [2023-08-31 23:41:45,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-08-31 23:41:45,094 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -35 predicate places. [2023-08-31 23:41:45,094 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 328 flow [2023-08-31 23:41:45,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:45,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:45,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:45,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:41:45,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:41:45,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:45,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1891124355, now seen corresponding path program 1 times [2023-08-31 23:41:45,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:45,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642378540] [2023-08-31 23:41:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:45,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:45,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:45,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642378540] [2023-08-31 23:41:45,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642378540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:45,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:45,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:41:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430579505] [2023-08-31 23:41:45,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:45,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:41:45,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:41:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:41:45,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 366 [2023-08-31 23:41:45,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:45,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:45,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 366 [2023-08-31 23:41:45,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:41:51,451 INFO L130 PetriNetUnfolder]: 31769/44682 cut-off events. [2023-08-31 23:41:51,451 INFO L131 PetriNetUnfolder]: For 40133/40133 co-relation queries the response was YES. [2023-08-31 23:41:51,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146357 conditions, 44682 events. 31769/44682 cut-off events. For 40133/40133 co-relation queries the response was YES. Maximal size of possible extension queue 2231. Compared 281841 event pairs, 10035 based on Foata normal form. 360/39838 useless extension candidates. Maximal degree in co-relation 146346. Up to 22169 conditions per place. [2023-08-31 23:41:51,729 INFO L137 encePairwiseOnDemand]: 347/366 looper letters, 73 selfloop transitions, 21 changer transitions 0/96 dead transitions. [2023-08-31 23:41:51,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 692 flow [2023-08-31 23:41:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:41:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:41:51,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 603 transitions. [2023-08-31 23:41:51,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41188524590163933 [2023-08-31 23:41:51,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 603 transitions. [2023-08-31 23:41:51,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 603 transitions. [2023-08-31 23:41:51,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:41:51,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 603 transitions. [2023-08-31 23:41:51,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:51,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:51,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:51,734 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 328 flow. Second operand 4 states and 603 transitions. [2023-08-31 23:41:51,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 692 flow [2023-08-31 23:41:52,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 96 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:41:52,018 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 503 flow [2023-08-31 23:41:52,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2023-08-31 23:41:52,018 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -32 predicate places. [2023-08-31 23:41:52,019 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 503 flow [2023-08-31 23:41:52,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:52,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:41:52,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:41:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:41:52,020 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:41:52,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:41:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1976179172, now seen corresponding path program 1 times [2023-08-31 23:41:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:41:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769065322] [2023-08-31 23:41:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:41:52,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:41:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:41:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:41:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:41:52,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769065322] [2023-08-31 23:41:52,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769065322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:41:52,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:41:52,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:41:52,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961370893] [2023-08-31 23:41:52,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:41:52,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:41:52,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:41:52,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:41:52,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:41:52,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 366 [2023-08-31 23:41:52,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 503 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:41:52,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:41:52,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 366 [2023-08-31 23:41:52,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:42:00,805 INFO L130 PetriNetUnfolder]: 48927/68560 cut-off events. [2023-08-31 23:42:00,806 INFO L131 PetriNetUnfolder]: For 116812/116940 co-relation queries the response was YES. [2023-08-31 23:42:01,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256985 conditions, 68560 events. 48927/68560 cut-off events. For 116812/116940 co-relation queries the response was YES. Maximal size of possible extension queue 3356. Compared 460746 event pairs, 19620 based on Foata normal form. 272/60400 useless extension candidates. Maximal degree in co-relation 256973. Up to 39512 conditions per place. [2023-08-31 23:42:01,300 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 104 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-31 23:42:01,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 949 flow [2023-08-31 23:42:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:42:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:42:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-31 23:42:01,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43989071038251365 [2023-08-31 23:42:01,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-31 23:42:01,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-31 23:42:01,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:42:01,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-31 23:42:01,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:01,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:01,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:01,306 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 503 flow. Second operand 3 states and 483 transitions. [2023-08-31 23:42:01,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 949 flow [2023-08-31 23:42:02,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 110 transitions, 945 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:42:02,066 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 511 flow [2023-08-31 23:42:02,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=511, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-31 23:42:02,066 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -30 predicate places. [2023-08-31 23:42:02,066 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 511 flow [2023-08-31 23:42:02,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:02,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:42:02,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:42:02,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:42:02,067 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:42:02,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:42:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1966221305, now seen corresponding path program 1 times [2023-08-31 23:42:02,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:42:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760039943] [2023-08-31 23:42:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:42:02,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:42:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:42:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:42:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:42:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760039943] [2023-08-31 23:42:02,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760039943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:42:02,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:42:02,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:42:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540954118] [2023-08-31 23:42:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:42:02,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:42:02,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:42:02,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:42:02,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:42:02,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 366 [2023-08-31 23:42:02,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 511 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:02,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:42:02,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 366 [2023-08-31 23:42:02,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:42:17,572 INFO L130 PetriNetUnfolder]: 84398/118677 cut-off events. [2023-08-31 23:42:17,572 INFO L131 PetriNetUnfolder]: For 236323/237249 co-relation queries the response was YES. [2023-08-31 23:42:18,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455212 conditions, 118677 events. 84398/118677 cut-off events. For 236323/237249 co-relation queries the response was YES. Maximal size of possible extension queue 5939. Compared 866652 event pairs, 21352 based on Foata normal form. 503/103982 useless extension candidates. Maximal degree in co-relation 455198. Up to 61206 conditions per place. [2023-08-31 23:42:18,435 INFO L137 encePairwiseOnDemand]: 361/366 looper letters, 152 selfloop transitions, 5 changer transitions 0/160 dead transitions. [2023-08-31 23:42:18,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 160 transitions, 1434 flow [2023-08-31 23:42:18,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:42:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:42:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 638 transitions. [2023-08-31 23:42:18,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43579234972677594 [2023-08-31 23:42:18,437 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 638 transitions. [2023-08-31 23:42:18,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 638 transitions. [2023-08-31 23:42:18,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:42:18,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 638 transitions. [2023-08-31 23:42:18,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:18,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:18,440 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:18,441 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 511 flow. Second operand 4 states and 638 transitions. [2023-08-31 23:42:18,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 160 transitions, 1434 flow [2023-08-31 23:42:20,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 160 transitions, 1421 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-31 23:42:20,727 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 525 flow [2023-08-31 23:42:20,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=525, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-31 23:42:20,728 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -27 predicate places. [2023-08-31 23:42:20,728 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 525 flow [2023-08-31 23:42:20,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:20,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:42:20,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:42:20,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 23:42:20,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-31 23:42:20,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:42:20,729 INFO L85 PathProgramCache]: Analyzing trace with hash -476739357, now seen corresponding path program 2 times [2023-08-31 23:42:20,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:42:20,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497515146] [2023-08-31 23:42:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:42:20,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:42:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:42:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:42:22,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:42:22,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497515146] [2023-08-31 23:42:22,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497515146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:42:22,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:42:22,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 23:42:22,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149154327] [2023-08-31 23:42:22,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:42:22,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 23:42:22,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:42:22,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 23:42:22,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-31 23:42:22,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 366 [2023-08-31 23:42:22,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:42:22,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:42:22,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 366 [2023-08-31 23:42:22,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand