./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f --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 23:38:19,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:38:19,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:38:19,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:38:19,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:38:19,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:38:19,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:38:19,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:38:19,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:38:19,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:38:19,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:38:19,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:38:19,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:38:19,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:38:19,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:38:19,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:38:19,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:38:19,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:38:19,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:38:19,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:38:19,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:38:19,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:38:19,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:38:19,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:38:19,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:38:19,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:38:19,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:38:19,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:38:19,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:38:19,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:38:19,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:38:19,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:38:19,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:38:19,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:38:19,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:38:19,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:38:19,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:38:19,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:38:19,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:38:19,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:38:19,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:38:19,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:38:19,852 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:38:19,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:38:19,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:38:19,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:38:19,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:38:19,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:38:19,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:38:19,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:38:19,854 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:38:19,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:38:19,855 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:38:19,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:38:19,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:38:19,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:38:19,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:38:19,856 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:38:19,856 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:38:19,856 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:38:19,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:38:19,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:38:19,856 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:38:19,856 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:38:19,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:38:19,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:38:19,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:38:19,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:38:19,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:38:19,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:38:19,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:38:19,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:38:19,858 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:38:19,858 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:38:19,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:38:19,858 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:38:19,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:38:20,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:38:20,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:38:20,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:38:20,084 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:38:20,084 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:38:20,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2023-08-31 23:38:20,835 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:38:21,028 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:38:21,029 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2023-08-31 23:38:21,037 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93278befa/8196fb8d0df44036beb0833163c5ff3e/FLAG0e29c4d3e [2023-08-31 23:38:21,047 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93278befa/8196fb8d0df44036beb0833163c5ff3e [2023-08-31 23:38:21,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:38:21,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:38:21,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:38:21,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:38:21,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:38:21,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47067c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21, skipping insertion in model container [2023-08-31 23:38:21,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:38:21,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:38:21,199 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/safe017_tso.i[945,958] [2023-08-31 23:38:21,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:38:21,298 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:38:21,307 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/safe017_tso.i[945,958] [2023-08-31 23:38:21,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:38:21,408 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:38:21,408 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:38:21,413 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:38:21,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21 WrapperNode [2023-08-31 23:38:21,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:38:21,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:38:21,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:38:21,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:38:21,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,460 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-08-31 23:38:21,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:38:21,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:38:21,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:38:21,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:38:21,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:38:21,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:38:21,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:38:21,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:38:21,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (1/1) ... [2023-08-31 23:38:21,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:38:21,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:38:21,530 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 23:38:21,548 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 23:38:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:38:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:38:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:38:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:38:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:38:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:38:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:38:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:38:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:38:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:38:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:38:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:38:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:38:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:38:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:38:21,561 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 23:38:21,671 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:38:21,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:38:21,811 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:38:21,815 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:38:21,815 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:38:21,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:38:21 BoogieIcfgContainer [2023-08-31 23:38:21,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:38:21,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:38:21,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:38:21,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:38:21,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:38:21" (1/3) ... [2023-08-31 23:38:21,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263cf82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:38:21, skipping insertion in model container [2023-08-31 23:38:21,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:38:21" (2/3) ... [2023-08-31 23:38:21,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263cf82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:38:21, skipping insertion in model container [2023-08-31 23:38:21,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:38:21" (3/3) ... [2023-08-31 23:38:21,823 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2023-08-31 23:38:21,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:38:21,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:38:21,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:38:21,909 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:38:21,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2023-08-31 23:38:21,965 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-08-31 23:38:21,965 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:38:21,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-08-31 23:38:21,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2023-08-31 23:38:21,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 85 transitions, 179 flow [2023-08-31 23:38:21,972 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:38:21,978 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 85 transitions, 179 flow [2023-08-31 23:38:21,980 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 85 transitions, 179 flow [2023-08-31 23:38:21,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 179 flow [2023-08-31 23:38:21,994 INFO L130 PetriNetUnfolder]: 2/85 cut-off events. [2023-08-31 23:38:21,996 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:38:21,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 85 events. 2/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-08-31 23:38:21,998 INFO L119 LiptonReduction]: Number of co-enabled transitions 1416 [2023-08-31 23:38:24,141 INFO L134 LiptonReduction]: Checked pairs total: 2725 [2023-08-31 23:38:24,141 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-31 23:38:24,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:38:24,155 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;@fc2f7c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:38:24,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:38:24,157 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:38:24,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:38:24,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:24,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:38:24,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:24,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:24,166 INFO L85 PathProgramCache]: Analyzing trace with hash 332, now seen corresponding path program 1 times [2023-08-31 23:38:24,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:24,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794448272] [2023-08-31 23:38:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:24,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:24,236 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 23:38:24,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:24,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794448272] [2023-08-31 23:38:24,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794448272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:24,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:24,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:38:24,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865348988] [2023-08-31 23:38:24,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:24,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:38:24,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:24,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:38:24,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:38:24,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 184 [2023-08-31 23:38:24,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 57 flow. Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:24,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:24,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 184 [2023-08-31 23:38:24,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:24,346 INFO L130 PetriNetUnfolder]: 218/361 cut-off events. [2023-08-31 23:38:24,347 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 23:38:24,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 361 events. 218/361 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1427 event pairs, 218 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 732. Up to 352 conditions per place. [2023-08-31 23:38:24,352 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 15 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-31 23:38:24,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 73 flow [2023-08-31 23:38:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:38:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:38:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 194 transitions. [2023-08-31 23:38:24,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2023-08-31 23:38:24,363 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 194 transitions. [2023-08-31 23:38:24,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 194 transitions. [2023-08-31 23:38:24,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:24,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 194 transitions. [2023-08-31 23:38:24,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 23:38:24,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 23:38:24,373 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 23:38:24,374 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 57 flow. Second operand 2 states and 194 transitions. [2023-08-31 23:38:24,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 73 flow [2023-08-31 23:38:24,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 70 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:38:24,377 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2023-08-31 23:38:24,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-31 23:38:24,382 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -8 predicate places. [2023-08-31 23:38:24,382 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2023-08-31 23:38:24,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:24,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:24,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:24,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:38:24,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:24,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1940435871, now seen corresponding path program 1 times [2023-08-31 23:38:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:24,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470237256] [2023-08-31 23:38:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:24,733 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 23:38:24,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:24,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470237256] [2023-08-31 23:38:24,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470237256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:24,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:24,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:38:24,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554052368] [2023-08-31 23:38:24,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:24,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:38:24,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:38:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:38:24,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:38:24,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 23:38:24,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:24,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:38:24,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:24,864 INFO L130 PetriNetUnfolder]: 584/939 cut-off events. [2023-08-31 23:38:24,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:38:24,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 939 events. 584/939 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4200 event pairs, 222 based on Foata normal form. 0/900 useless extension candidates. Maximal degree in co-relation 1920. Up to 481 conditions per place. [2023-08-31 23:38:24,869 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-31 23:38:24,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 134 flow [2023-08-31 23:38:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:38:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:38:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2023-08-31 23:38:24,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48188405797101447 [2023-08-31 23:38:24,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2023-08-31 23:38:24,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2023-08-31 23:38:24,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:24,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2023-08-31 23:38:24,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states 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 23:38:24,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 23:38:24,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 23:38:24,878 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 266 transitions. [2023-08-31 23:38:24,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 134 flow [2023-08-31 23:38:24,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:38:24,879 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 94 flow [2023-08-31 23:38:24,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-08-31 23:38:24,880 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-31 23:38:24,880 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 94 flow [2023-08-31 23:38:24,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 23:38:24,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:24,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:24,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:38:24,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:24,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1940435878, now seen corresponding path program 1 times [2023-08-31 23:38:24,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:24,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689200951] [2023-08-31 23:38:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:24,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:25,188 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 23:38:25,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:25,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689200951] [2023-08-31 23:38:25,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689200951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:25,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:25,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:38:25,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934440080] [2023-08-31 23:38:25,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:25,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:38:25,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:25,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:38:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:38:25,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 184 [2023-08-31 23:38:25,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 23:38:25,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:25,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 184 [2023-08-31 23:38:25,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:25,329 INFO L130 PetriNetUnfolder]: 326/580 cut-off events. [2023-08-31 23:38:25,330 INFO L131 PetriNetUnfolder]: For 354/357 co-relation queries the response was YES. [2023-08-31 23:38:25,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 580 events. 326/580 cut-off events. For 354/357 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2631 event pairs, 104 based on Foata normal form. 77/648 useless extension candidates. Maximal degree in co-relation 1549. Up to 480 conditions per place. [2023-08-31 23:38:25,333 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-08-31 23:38:25,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 166 flow [2023-08-31 23:38:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:38:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:38:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 376 transitions. [2023-08-31 23:38:25,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40869565217391307 [2023-08-31 23:38:25,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 376 transitions. [2023-08-31 23:38:25,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 376 transitions. [2023-08-31 23:38:25,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:25,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 376 transitions. [2023-08-31 23:38:25,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:25,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 23:38:25,339 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 23:38:25,339 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 94 flow. Second operand 5 states and 376 transitions. [2023-08-31 23:38:25,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 166 flow [2023-08-31 23:38:25,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:38:25,342 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 78 flow [2023-08-31 23:38:25,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-08-31 23:38:25,343 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-08-31 23:38:25,345 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 78 flow [2023-08-31 23:38:25,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 23:38:25,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:25,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:25,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:38:25,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:25,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:25,347 INFO L85 PathProgramCache]: Analyzing trace with hash -530840016, now seen corresponding path program 1 times [2023-08-31 23:38:25,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:25,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916367556] [2023-08-31 23:38:25,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:25,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:25,459 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 23:38:25,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:25,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916367556] [2023-08-31 23:38:25,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916367556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:25,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:25,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:38:25,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207856338] [2023-08-31 23:38:25,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:25,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:38:25,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:25,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:38:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:38:25,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:38:25,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 23:38:25,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:25,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:38:25,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:25,532 INFO L130 PetriNetUnfolder]: 380/633 cut-off events. [2023-08-31 23:38:25,532 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2023-08-31 23:38:25,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 633 events. 380/633 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2579 event pairs, 85 based on Foata normal form. 9/642 useless extension candidates. Maximal degree in co-relation 1622. Up to 264 conditions per place. [2023-08-31 23:38:25,535 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 26 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2023-08-31 23:38:25,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 33 transitions, 178 flow [2023-08-31 23:38:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:38:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:38:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2023-08-31 23:38:25,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46603260869565216 [2023-08-31 23:38:25,536 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2023-08-31 23:38:25,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2023-08-31 23:38:25,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:25,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2023-08-31 23:38:25,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:25,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:25,541 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:25,541 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 78 flow. Second operand 4 states and 343 transitions. [2023-08-31 23:38:25,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 33 transitions, 178 flow [2023-08-31 23:38:25,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 173 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:38:25,544 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 121 flow [2023-08-31 23:38:25,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-08-31 23:38:25,545 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-31 23:38:25,545 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 121 flow [2023-08-31 23:38:25,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 23:38:25,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:25,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:25,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:38:25,546 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:25,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:25,546 INFO L85 PathProgramCache]: Analyzing trace with hash 23968665, now seen corresponding path program 1 times [2023-08-31 23:38:25,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:25,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949139800] [2023-08-31 23:38:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:25,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:25,644 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 23:38:25,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:25,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949139800] [2023-08-31 23:38:25,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949139800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:25,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:25,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:38:25,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993017966] [2023-08-31 23:38:25,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:25,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:38:25,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:25,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:38:25,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:38:25,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:38:25,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 23:38:25,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:25,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:38:25,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:25,725 INFO L130 PetriNetUnfolder]: 365/609 cut-off events. [2023-08-31 23:38:25,725 INFO L131 PetriNetUnfolder]: For 509/509 co-relation queries the response was YES. [2023-08-31 23:38:25,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 609 events. 365/609 cut-off events. For 509/509 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2502 event pairs, 61 based on Foata normal form. 3/612 useless extension candidates. Maximal degree in co-relation 1876. Up to 304 conditions per place. [2023-08-31 23:38:25,729 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 33 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2023-08-31 23:38:25,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 285 flow [2023-08-31 23:38:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:38:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:38:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2023-08-31 23:38:25,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2023-08-31 23:38:25,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2023-08-31 23:38:25,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2023-08-31 23:38:25,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:25,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2023-08-31 23:38:25,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 23:38:25,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:25,733 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:25,733 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 121 flow. Second operand 4 states and 352 transitions. [2023-08-31 23:38:25,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 285 flow [2023-08-31 23:38:25,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:38:25,737 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 185 flow [2023-08-31 23:38:25,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-31 23:38:25,738 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-31 23:38:25,739 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 185 flow [2023-08-31 23:38:25,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 23:38:25,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:25,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:25,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:38:25,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:25,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash 743030306, now seen corresponding path program 1 times [2023-08-31 23:38:25,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:25,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421818241] [2023-08-31 23:38:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:25,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:25,847 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 23:38:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421818241] [2023-08-31 23:38:25,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421818241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:25,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:25,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:38:25,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210326613] [2023-08-31 23:38:25,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:25,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:38:25,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:38:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:38:25,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:38:25,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:25,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:25,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:38:25,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:25,911 INFO L130 PetriNetUnfolder]: 351/588 cut-off events. [2023-08-31 23:38:25,911 INFO L131 PetriNetUnfolder]: For 1017/1017 co-relation queries the response was YES. [2023-08-31 23:38:25,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 588 events. 351/588 cut-off events. For 1017/1017 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2398 event pairs, 54 based on Foata normal form. 3/591 useless extension candidates. Maximal degree in co-relation 2067. Up to 293 conditions per place. [2023-08-31 23:38:25,914 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 35 selfloop transitions, 15 changer transitions 0/50 dead transitions. [2023-08-31 23:38:25,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 404 flow [2023-08-31 23:38:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:38:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:38:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2023-08-31 23:38:25,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47690217391304346 [2023-08-31 23:38:25,916 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2023-08-31 23:38:25,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2023-08-31 23:38:25,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:25,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2023-08-31 23:38:25,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:25,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:25,918 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:25,918 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 185 flow. Second operand 4 states and 351 transitions. [2023-08-31 23:38:25,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 404 flow [2023-08-31 23:38:25,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 404 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:38:25,921 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 330 flow [2023-08-31 23:38:25,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-31 23:38:25,922 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-31 23:38:25,922 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 330 flow [2023-08-31 23:38:25,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:25,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:25,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:25,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:38:25,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:25,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:25,923 INFO L85 PathProgramCache]: Analyzing trace with hash 963760888, now seen corresponding path program 1 times [2023-08-31 23:38:25,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:25,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616300015] [2023-08-31 23:38:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:25,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:26,007 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 23:38:26,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:26,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616300015] [2023-08-31 23:38:26,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616300015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:26,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:38:26,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939749363] [2023-08-31 23:38:26,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:26,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:38:26,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:38:26,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:38:26,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:38:26,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:26,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:26,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:38:26,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:26,087 INFO L130 PetriNetUnfolder]: 374/637 cut-off events. [2023-08-31 23:38:26,088 INFO L131 PetriNetUnfolder]: For 1814/1814 co-relation queries the response was YES. [2023-08-31 23:38:26,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 637 events. 374/637 cut-off events. For 1814/1814 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2734 event pairs, 69 based on Foata normal form. 6/643 useless extension candidates. Maximal degree in co-relation 2489. Up to 295 conditions per place. [2023-08-31 23:38:26,091 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 33 selfloop transitions, 19 changer transitions 1/53 dead transitions. [2023-08-31 23:38:26,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 493 flow [2023-08-31 23:38:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:38:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:38:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2023-08-31 23:38:26,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2023-08-31 23:38:26,093 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2023-08-31 23:38:26,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2023-08-31 23:38:26,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:26,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2023-08-31 23:38:26,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states 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 23:38:26,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:26,095 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:26,095 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 330 flow. Second operand 4 states and 352 transitions. [2023-08-31 23:38:26,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 493 flow [2023-08-31 23:38:26,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:38:26,100 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 385 flow [2023-08-31 23:38:26,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-08-31 23:38:26,100 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-08-31 23:38:26,100 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 385 flow [2023-08-31 23:38:26,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:26,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:26,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:26,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:38:26,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:26,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1559086438, now seen corresponding path program 1 times [2023-08-31 23:38:26,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:26,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336523801] [2023-08-31 23:38:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:26,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:26,190 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 23:38:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336523801] [2023-08-31 23:38:26,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336523801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:26,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:26,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:38:26,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479450818] [2023-08-31 23:38:26,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:26,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:38:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:26,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:38:26,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:38:26,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 184 [2023-08-31 23:38:26,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 23:38:26,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:26,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 184 [2023-08-31 23:38:26,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:26,273 INFO L130 PetriNetUnfolder]: 258/498 cut-off events. [2023-08-31 23:38:26,273 INFO L131 PetriNetUnfolder]: For 2434/2459 co-relation queries the response was YES. [2023-08-31 23:38:26,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 498 events. 258/498 cut-off events. For 2434/2459 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2448 event pairs, 48 based on Foata normal form. 39/531 useless extension candidates. Maximal degree in co-relation 2009. Up to 281 conditions per place. [2023-08-31 23:38:26,275 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 43 selfloop transitions, 7 changer transitions 25/86 dead transitions. [2023-08-31 23:38:26,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 86 transitions, 1009 flow [2023-08-31 23:38:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:38:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:38:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 444 transitions. [2023-08-31 23:38:26,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826086956521739 [2023-08-31 23:38:26,277 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 444 transitions. [2023-08-31 23:38:26,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 444 transitions. [2023-08-31 23:38:26,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:26,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 444 transitions. [2023-08-31 23:38:26,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 23:38:26,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 23:38:26,280 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 23:38:26,280 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 385 flow. Second operand 5 states and 444 transitions. [2023-08-31 23:38:26,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 86 transitions, 1009 flow [2023-08-31 23:38:26,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 997 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-31 23:38:26,283 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 429 flow [2023-08-31 23:38:26,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-08-31 23:38:26,284 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-08-31 23:38:26,284 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 429 flow [2023-08-31 23:38:26,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 23:38:26,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:26,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:38:26,285 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:26,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:26,285 INFO L85 PathProgramCache]: Analyzing trace with hash 324200283, now seen corresponding path program 1 times [2023-08-31 23:38:26,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:26,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405673584] [2023-08-31 23:38:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:26,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:26,404 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 23:38:26,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:26,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405673584] [2023-08-31 23:38:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405673584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:26,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:26,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:38:26,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96529516] [2023-08-31 23:38:26,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:26,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:38:26,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:26,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:38:26,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:38:26,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 184 [2023-08-31 23:38:26,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 429 flow. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 23:38:26,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:26,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 184 [2023-08-31 23:38:26,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:26,494 INFO L130 PetriNetUnfolder]: 198/418 cut-off events. [2023-08-31 23:38:26,495 INFO L131 PetriNetUnfolder]: For 2510/2588 co-relation queries the response was YES. [2023-08-31 23:38:26,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2117 conditions, 418 events. 198/418 cut-off events. For 2510/2588 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2130 event pairs, 15 based on Foata normal form. 74/489 useless extension candidates. Maximal degree in co-relation 2098. Up to 145 conditions per place. [2023-08-31 23:38:26,497 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 49 selfloop transitions, 11 changer transitions 32/102 dead transitions. [2023-08-31 23:38:26,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 102 transitions, 1208 flow [2023-08-31 23:38:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:38:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:38:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2023-08-31 23:38:26,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2023-08-31 23:38:26,498 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2023-08-31 23:38:26,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2023-08-31 23:38:26,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:26,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2023-08-31 23:38:26,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 0 states have call successors, (0), 0 states 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 23:38:26,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 23:38:26,501 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 23:38:26,501 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 429 flow. Second operand 7 states and 620 transitions. [2023-08-31 23:38:26,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 102 transitions, 1208 flow [2023-08-31 23:38:26,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 1208 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:38:26,505 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 490 flow [2023-08-31 23:38:26,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-08-31 23:38:26,506 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-08-31 23:38:26,506 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 490 flow [2023-08-31 23:38:26,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 23:38:26,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:26,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:26,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:38:26,507 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:26,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash 516694249, now seen corresponding path program 1 times [2023-08-31 23:38:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:26,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476420817] [2023-08-31 23:38:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476420817] [2023-08-31 23:38:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476420817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:26,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:26,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:38:26,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032403952] [2023-08-31 23:38:26,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:26,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:38:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:38:26,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:38:26,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:38:26,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 490 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 23:38:26,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:26,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:38:26,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:26,693 INFO L130 PetriNetUnfolder]: 304/645 cut-off events. [2023-08-31 23:38:26,693 INFO L131 PetriNetUnfolder]: For 4945/4945 co-relation queries the response was YES. [2023-08-31 23:38:26,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3917 conditions, 645 events. 304/645 cut-off events. For 4945/4945 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3603 event pairs, 57 based on Foata normal form. 7/652 useless extension candidates. Maximal degree in co-relation 3894. Up to 351 conditions per place. [2023-08-31 23:38:26,696 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 37 selfloop transitions, 11 changer transitions 42/90 dead transitions. [2023-08-31 23:38:26,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 1055 flow [2023-08-31 23:38:26,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:38:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:38:26,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-08-31 23:38:26,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706521739130435 [2023-08-31 23:38:26,697 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-08-31 23:38:26,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-08-31 23:38:26,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:26,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-08-31 23:38:26,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 23:38:26,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 23:38:26,700 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states 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 23:38:26,700 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 490 flow. Second operand 5 states and 433 transitions. [2023-08-31 23:38:26,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 1055 flow [2023-08-31 23:38:26,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 90 transitions, 976 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-08-31 23:38:26,709 INFO L231 Difference]: Finished difference. Result has 62 places, 30 transitions, 337 flow [2023-08-31 23:38:26,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=62, PETRI_TRANSITIONS=30} [2023-08-31 23:38:26,710 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2023-08-31 23:38:26,710 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 30 transitions, 337 flow [2023-08-31 23:38:26,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states 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 23:38:26,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:26,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:26,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:38:26,711 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:26,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:26,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1858243425, now seen corresponding path program 1 times [2023-08-31 23:38:26,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:26,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5544105] [2023-08-31 23:38:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:26,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:26,822 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 23:38:26,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:26,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5544105] [2023-08-31 23:38:26,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5544105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:26,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:26,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:38:26,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723366959] [2023-08-31 23:38:26,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:26,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:38:26,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:26,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:38:26,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:38:26,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 184 [2023-08-31 23:38:26,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 30 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 23:38:26,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:26,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 184 [2023-08-31 23:38:26,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:26,893 INFO L130 PetriNetUnfolder]: 65/157 cut-off events. [2023-08-31 23:38:26,893 INFO L131 PetriNetUnfolder]: For 1042/1069 co-relation queries the response was YES. [2023-08-31 23:38:26,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 883 conditions, 157 events. 65/157 cut-off events. For 1042/1069 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 578 event pairs, 8 based on Foata normal form. 24/179 useless extension candidates. Maximal degree in co-relation 861. Up to 62 conditions per place. [2023-08-31 23:38:26,894 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 17 selfloop transitions, 10 changer transitions 23/52 dead transitions. [2023-08-31 23:38:26,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 670 flow [2023-08-31 23:38:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:38:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:38:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 608 transitions. [2023-08-31 23:38:26,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720496894409938 [2023-08-31 23:38:26,896 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 608 transitions. [2023-08-31 23:38:26,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 608 transitions. [2023-08-31 23:38:26,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:26,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 608 transitions. [2023-08-31 23:38:26,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:26,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 23:38:26,899 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states 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 23:38:26,899 INFO L175 Difference]: Start difference. First operand has 62 places, 30 transitions, 337 flow. Second operand 7 states and 608 transitions. [2023-08-31 23:38:26,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 670 flow [2023-08-31 23:38:26,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 485 flow, removed 14 selfloop flow, removed 13 redundant places. [2023-08-31 23:38:26,901 INFO L231 Difference]: Finished difference. Result has 55 places, 22 transitions, 181 flow [2023-08-31 23:38:26,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=55, PETRI_TRANSITIONS=22} [2023-08-31 23:38:26,902 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-08-31 23:38:26,902 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 22 transitions, 181 flow [2023-08-31 23:38:26,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 23:38:26,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:26,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:26,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:38:26,902 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:38:26,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1653511432, now seen corresponding path program 1 times [2023-08-31 23:38:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451884312] [2023-08-31 23:38:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:26,995 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 23:38:26,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:26,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451884312] [2023-08-31 23:38:26,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451884312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:26,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:26,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:38:26,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508566214] [2023-08-31 23:38:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:26,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:38:26,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:26,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:38:26,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:38:27,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-08-31 23:38:27,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 22 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:27,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:27,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-08-31 23:38:27,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:27,024 INFO L130 PetriNetUnfolder]: 23/59 cut-off events. [2023-08-31 23:38:27,024 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-08-31 23:38:27,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 59 events. 23/59 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 10 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 299. Up to 24 conditions per place. [2023-08-31 23:38:27,024 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-31 23:38:27,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 27 transitions, 252 flow [2023-08-31 23:38:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:38:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:38:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2023-08-31 23:38:27,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453804347826087 [2023-08-31 23:38:27,026 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2023-08-31 23:38:27,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2023-08-31 23:38:27,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:27,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2023-08-31 23:38:27,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states 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 23:38:27,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:27,028 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states 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 23:38:27,028 INFO L175 Difference]: Start difference. First operand has 55 places, 22 transitions, 181 flow. Second operand 4 states and 334 transitions. [2023-08-31 23:38:27,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 27 transitions, 252 flow [2023-08-31 23:38:27,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 27 transitions, 167 flow, removed 8 selfloop flow, removed 18 redundant places. [2023-08-31 23:38:27,030 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-31 23:38:27,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-31 23:38:27,031 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-31 23:38:27,031 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-31 23:38:27,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:27,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:38:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:38:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:38:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:38:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:38:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:38:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:38:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:38:27,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:38:27,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:38:27,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:38:27,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:38:27,037 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:27,040 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:38:27,040 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:38:27,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:38:27 BasicIcfg [2023-08-31 23:38:27,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:38:27,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:38:27,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:38:27,043 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:38:27,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:38:21" (3/4) ... [2023-08-31 23:38:27,046 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:38:27,050 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:38:27,050 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:38:27,050 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:38:27,054 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:38:27,054 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:38:27,054 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:38:27,054 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:38:27,077 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:38:27,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:38:27,078 INFO L158 Benchmark]: Toolchain (without parser) took 6024.63ms. Allocated memory was 73.4MB in the beginning and 163.6MB in the end (delta: 90.2MB). Free memory was 49.2MB in the beginning and 75.7MB in the end (delta: -26.5MB). Peak memory consumption was 66.7MB. Max. memory is 16.1GB. [2023-08-31 23:38:27,078 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:38:27,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.65ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 48.9MB in the beginning and 68.3MB in the end (delta: -19.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2023-08-31 23:38:27,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.08ms. Allocated memory is still 94.4MB. Free memory was 68.3MB in the beginning and 66.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:38:27,078 INFO L158 Benchmark]: Boogie Preprocessor took 40.07ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 64.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:38:27,079 INFO L158 Benchmark]: RCFGBuilder took 315.55ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 50.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:38:27,079 INFO L158 Benchmark]: TraceAbstraction took 5224.32ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 49.8MB in the beginning and 78.8MB in the end (delta: -29.0MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2023-08-31 23:38:27,079 INFO L158 Benchmark]: Witness Printer took 34.45ms. Allocated memory is still 163.6MB. Free memory was 78.8MB in the beginning and 75.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:38:27,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory is still 50.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.65ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 48.9MB in the beginning and 68.3MB in the end (delta: -19.4MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.08ms. Allocated memory is still 94.4MB. Free memory was 68.3MB in the beginning and 66.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.07ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 64.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.55ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 50.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5224.32ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 49.8MB in the beginning and 78.8MB in the end (delta: -29.0MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * Witness Printer took 34.45ms. Allocated memory is still 163.6MB. Free memory was 78.8MB in the beginning and 75.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 93 PlacesBefore, 33 PlacesAfterwards, 85 TransitionsBefore, 24 TransitionsAfterwards, 1416 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 92 TotalNumberOfCompositions, 2725 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1547, independent: 1457, independent conditional: 0, independent unconditional: 1457, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 805, independent: 770, independent conditional: 0, independent unconditional: 770, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1547, independent: 687, independent conditional: 0, independent unconditional: 687, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 805, unknown conditional: 0, unknown unconditional: 805] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 769]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 374 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 268 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 726 IncrementalHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 52 mSDtfsCounter, 726 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=490occurred in iteration=9, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 660 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:38:27,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE