./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.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 ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:42:31,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:42:31,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:42:31,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:42:31,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:42:31,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:42:31,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:42:31,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:42:31,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:42:31,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:42:31,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:42:31,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:42:31,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:42:31,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:42:31,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:42:31,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:42:31,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:42:31,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:42:31,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:42:31,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:42:31,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:42:31,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:42:31,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:42:31,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:42:31,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:42:31,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:42:31,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:42:31,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:42:31,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:42:31,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:42:31,961 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:42:31,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:42:31,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:42:31,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:42:31,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:42:31,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:42:31,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:42:31,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:42:31,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:42:31,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:42:31,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:42:31,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:42:31,987 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:42:31,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:42:31,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:42:31,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:42:31,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:42:31,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:42:31,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:42:31,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:42:31,990 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:42:31,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:42:31,990 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:42:31,991 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:42:31,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:42:31,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:42:31,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:42:31,991 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:42:31,991 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:42:31,992 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:42:31,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:42:31,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:42:31,992 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:42:31,992 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:42:31,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:42:31,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:42:31,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:42:31,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:42:31,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:42:31,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:42:31,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:42:31,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:42:31,994 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:42:31,994 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:42:31,995 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:42:31,995 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:42:31,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:42:32,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:42:32,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:42:32,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:42:32,267 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:42:32,267 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:42:32,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2023-08-29 20:42:33,387 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:42:33,599 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:42:33,600 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2023-08-29 20:42:33,626 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63ed5db0b/58612ffcc432455c9f6480fc208c13ba/FLAGd23b36394 [2023-08-29 20:42:33,637 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63ed5db0b/58612ffcc432455c9f6480fc208c13ba [2023-08-29 20:42:33,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:42:33,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:42:33,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:42:33,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:42:33,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:42:33,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:42:33" (1/1) ... [2023-08-29 20:42:33,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5d341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:33, skipping insertion in model container [2023-08-29 20:42:33,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:42:33" (1/1) ... [2023-08-29 20:42:33,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:42:33,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:42:33,865 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/safe016_rmo.oepc.i[993,1006] [2023-08-29 20:42:34,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:42:34,108 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:42:34,120 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/safe016_rmo.oepc.i[993,1006] [2023-08-29 20:42:34,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:42:34,194 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:42:34,195 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:42:34,200 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:42:34,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34 WrapperNode [2023-08-29 20:42:34,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:42:34,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:42:34,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:42:34,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:42:34,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,279 INFO L138 Inliner]: procedures = 177, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 188 [2023-08-29 20:42:34,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:42:34,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:42:34,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:42:34,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:42:34,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,326 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:42:34,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:42:34,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:42:34,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:42:34,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (1/1) ... [2023-08-29 20:42:34,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:42:34,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:42:34,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:42:34,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:42:34,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 20:42:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:42:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:42:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:42:34,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:42:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:42:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:42:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:42:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:42:34,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:42:34,403 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:42:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:42:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-29 20:42:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-29 20:42:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:42:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:42:34,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:42:34,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:42:34,406 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:42:34,593 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:42:34,602 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:42:35,028 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:42:35,567 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:42:35,567 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:42:35,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:42:35 BoogieIcfgContainer [2023-08-29 20:42:35,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:42:35,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:42:35,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:42:35,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:42:35,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:42:33" (1/3) ... [2023-08-29 20:42:35,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a9448f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:42:35, skipping insertion in model container [2023-08-29 20:42:35,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:42:34" (2/3) ... [2023-08-29 20:42:35,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a9448f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:42:35, skipping insertion in model container [2023-08-29 20:42:35,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:42:35" (3/3) ... [2023-08-29 20:42:35,576 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2023-08-29 20:42:35,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:42:35,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2023-08-29 20:42:35,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:42:35,732 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:42:35,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 412 flow [2023-08-29 20:42:35,906 INFO L130 PetriNetUnfolder]: 2/192 cut-off events. [2023-08-29 20:42:35,907 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:42:35,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 192 events. 2/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 291 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-08-29 20:42:35,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 412 flow [2023-08-29 20:42:35,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 192 transitions, 396 flow [2023-08-29 20:42:35,926 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:42:35,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 192 transitions, 396 flow [2023-08-29 20:42:35,947 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 192 transitions, 396 flow [2023-08-29 20:42:35,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 396 flow [2023-08-29 20:42:36,030 INFO L130 PetriNetUnfolder]: 2/192 cut-off events. [2023-08-29 20:42:36,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:42:36,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 192 events. 2/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 294 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-08-29 20:42:36,038 INFO L119 LiptonReduction]: Number of co-enabled transitions 8020 [2023-08-29 20:43:00,098 INFO L134 LiptonReduction]: Checked pairs total: 39374 [2023-08-29 20:43:00,099 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-08-29 20:43:00,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:43:00,121 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;@9f43401, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:43:00,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-08-29 20:43:00,124 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 20:43:00,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:43:00,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:00,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:43:00,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:00,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:00,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1093, now seen corresponding path program 1 times [2023-08-29 20:43:00,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:00,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423712401] [2023-08-29 20:43:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:00,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:00,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:00,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423712401] [2023-08-29 20:43:00,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423712401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:00,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:00,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:43:00,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439082538] [2023-08-29 20:43:00,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:00,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:43:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:43:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:43:00,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 353 [2023-08-29 20:43:00,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:00,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:00,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 353 [2023-08-29 20:43:00,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:10,653 INFO L130 PetriNetUnfolder]: 69742/91810 cut-off events. [2023-08-29 20:43:10,654 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-29 20:43:10,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183861 conditions, 91810 events. 69742/91810 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 6115. Compared 600215 event pairs, 69742 based on Foata normal form. 0/47016 useless extension candidates. Maximal degree in co-relation 183849. Up to 91764 conditions per place. [2023-08-29 20:43:11,230 INFO L137 encePairwiseOnDemand]: 324/353 looper letters, 50 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2023-08-29 20:43:11,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 220 flow [2023-08-29 20:43:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:43:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:43:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 371 transitions. [2023-08-29 20:43:11,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254957507082153 [2023-08-29 20:43:11,252 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 371 transitions. [2023-08-29 20:43:11,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 371 transitions. [2023-08-29 20:43:11,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:11,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 371 transitions. [2023-08-29 20:43:11,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:11,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:11,267 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:11,269 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 180 flow. Second operand 2 states and 371 transitions. [2023-08-29 20:43:11,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 220 flow [2023-08-29 20:43:11,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 20:43:11,285 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 116 flow [2023-08-29 20:43:11,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-08-29 20:43:11,290 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -32 predicate places. [2023-08-29 20:43:11,292 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 116 flow [2023-08-29 20:43:11,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:11,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:11,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 20:43:11,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:43:11,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:11,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1078472, now seen corresponding path program 1 times [2023-08-29 20:43:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:11,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321386327] [2023-08-29 20:43:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:11,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321386327] [2023-08-29 20:43:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321386327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:11,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:43:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457183140] [2023-08-29 20:43:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:11,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:43:11,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:43:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:43:11,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 353 [2023-08-29 20:43:11,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:11,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:11,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 353 [2023-08-29 20:43:11,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:18,092 INFO L130 PetriNetUnfolder]: 56869/77314 cut-off events. [2023-08-29 20:43:18,092 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:43:18,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154444 conditions, 77314 events. 56869/77314 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3450. Compared 495237 event pairs, 34094 based on Foata normal form. 0/49293 useless extension candidates. Maximal degree in co-relation 154441. Up to 45237 conditions per place. [2023-08-29 20:43:18,499 INFO L137 encePairwiseOnDemand]: 332/353 looper letters, 59 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2023-08-29 20:43:18,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 72 transitions, 292 flow [2023-08-29 20:43:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:43:18,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:43:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-29 20:43:18,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636449480642115 [2023-08-29 20:43:18,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-29 20:43:18,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-29 20:43:18,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:18,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-29 20:43:18,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:18,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:18,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:18,507 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 116 flow. Second operand 3 states and 491 transitions. [2023-08-29 20:43:18,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 72 transitions, 292 flow [2023-08-29 20:43:18,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:43:18,509 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 204 flow [2023-08-29 20:43:18,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2023-08-29 20:43:18,510 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -31 predicate places. [2023-08-29 20:43:18,511 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 204 flow [2023-08-29 20:43:18,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:18,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:18,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 20:43:18,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:43:18,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:18,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:18,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1078473, now seen corresponding path program 1 times [2023-08-29 20:43:18,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:18,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618151939] [2023-08-29 20:43:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:18,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:18,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:18,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618151939] [2023-08-29 20:43:18,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618151939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:18,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:18,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:43:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123734216] [2023-08-29 20:43:18,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:18,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:43:18,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:18,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:43:18,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:43:18,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-08-29 20:43:18,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:18,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:18,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-08-29 20:43:18,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:21,244 INFO L130 PetriNetUnfolder]: 18651/26495 cut-off events. [2023-08-29 20:43:21,245 INFO L131 PetriNetUnfolder]: For 7466/7643 co-relation queries the response was YES. [2023-08-29 20:43:21,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71790 conditions, 26495 events. 18651/26495 cut-off events. For 7466/7643 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 167836 event pairs, 14370 based on Foata normal form. 6147/29746 useless extension candidates. Maximal degree in co-relation 71785. Up to 25102 conditions per place. [2023-08-29 20:43:21,617 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 45 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-29 20:43:21,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 276 flow [2023-08-29 20:43:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:43:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:43:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-29 20:43:21,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45042492917847027 [2023-08-29 20:43:21,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-29 20:43:21,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-29 20:43:21,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:21,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-29 20:43:21,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:21,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:21,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:21,623 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 204 flow. Second operand 3 states and 477 transitions. [2023-08-29 20:43:21,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 276 flow [2023-08-29 20:43:21,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:43:21,668 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 164 flow [2023-08-29 20:43:21,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-29 20:43:21,669 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -41 predicate places. [2023-08-29 20:43:21,670 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 164 flow [2023-08-29 20:43:21,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:21,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:21,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:43:21,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:43:21,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:21,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:21,671 INFO L85 PathProgramCache]: Analyzing trace with hash 936182227, now seen corresponding path program 1 times [2023-08-29 20:43:21,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:21,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676849926] [2023-08-29 20:43:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:21,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:21,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:21,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676849926] [2023-08-29 20:43:21,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676849926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:21,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:21,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:43:21,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342807594] [2023-08-29 20:43:21,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:21,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:43:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:43:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:43:21,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 353 [2023-08-29 20:43:21,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:21,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:21,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 353 [2023-08-29 20:43:21,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:24,123 INFO L130 PetriNetUnfolder]: 18282/26770 cut-off events. [2023-08-29 20:43:24,124 INFO L131 PetriNetUnfolder]: For 2915/3080 co-relation queries the response was YES. [2023-08-29 20:43:24,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66152 conditions, 26770 events. 18282/26770 cut-off events. For 2915/3080 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 180713 event pairs, 7361 based on Foata normal form. 0/21403 useless extension candidates. Maximal degree in co-relation 66147. Up to 15275 conditions per place. [2023-08-29 20:43:24,274 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 81 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-29 20:43:24,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 454 flow [2023-08-29 20:43:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:43:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:43:24,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-29 20:43:24,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47780925401322 [2023-08-29 20:43:24,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-29 20:43:24,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-29 20:43:24,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:24,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-29 20:43:24,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:24,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:24,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:24,284 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 164 flow. Second operand 3 states and 506 transitions. [2023-08-29 20:43:24,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 454 flow [2023-08-29 20:43:24,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:43:24,287 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 176 flow [2023-08-29 20:43:24,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-08-29 20:43:24,288 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -39 predicate places. [2023-08-29 20:43:24,288 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 176 flow [2023-08-29 20:43:24,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:24,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:24,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:43:24,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:43:24,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:24,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:24,289 INFO L85 PathProgramCache]: Analyzing trace with hash 936182570, now seen corresponding path program 1 times [2023-08-29 20:43:24,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:24,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456376013] [2023-08-29 20:43:24,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:24,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456376013] [2023-08-29 20:43:24,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456376013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:24,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:24,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:43:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136758791] [2023-08-29 20:43:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:24,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:43:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:43:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:43:24,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 353 [2023-08-29 20:43:24,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:24,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:24,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 353 [2023-08-29 20:43:24,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:27,151 INFO L130 PetriNetUnfolder]: 24605/34041 cut-off events. [2023-08-29 20:43:27,151 INFO L131 PetriNetUnfolder]: For 11065/11417 co-relation queries the response was YES. [2023-08-29 20:43:27,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89300 conditions, 34041 events. 24605/34041 cut-off events. For 11065/11417 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 212887 event pairs, 8369 based on Foata normal form. 50/28373 useless extension candidates. Maximal degree in co-relation 89294. Up to 30725 conditions per place. [2023-08-29 20:43:27,322 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 82 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-08-29 20:43:27,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 89 transitions, 484 flow [2023-08-29 20:43:27,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:43:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:43:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-29 20:43:27,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749763928234183 [2023-08-29 20:43:27,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-29 20:43:27,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-29 20:43:27,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:27,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-29 20:43:27,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:27,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:27,328 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:27,329 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 176 flow. Second operand 3 states and 503 transitions. [2023-08-29 20:43:27,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 89 transitions, 484 flow [2023-08-29 20:43:27,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:43:27,334 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 202 flow [2023-08-29 20:43:27,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-29 20:43:27,335 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -38 predicate places. [2023-08-29 20:43:27,335 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 202 flow [2023-08-29 20:43:27,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:27,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:27,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:43:27,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:43:27,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:27,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1043112349, now seen corresponding path program 1 times [2023-08-29 20:43:27,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:27,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025397902] [2023-08-29 20:43:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:27,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:27,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:27,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025397902] [2023-08-29 20:43:27,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025397902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:27,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:27,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:43:27,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180304055] [2023-08-29 20:43:27,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:27,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:43:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:43:27,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:43:27,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 353 [2023-08-29 20:43:27,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:27,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:27,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 353 [2023-08-29 20:43:27,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:30,065 INFO L130 PetriNetUnfolder]: 24461/33826 cut-off events. [2023-08-29 20:43:30,065 INFO L131 PetriNetUnfolder]: For 15431/16060 co-relation queries the response was YES. [2023-08-29 20:43:30,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93911 conditions, 33826 events. 24461/33826 cut-off events. For 15431/16060 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 217195 event pairs, 3816 based on Foata normal form. 286/28742 useless extension candidates. Maximal degree in co-relation 93904. Up to 29097 conditions per place. [2023-08-29 20:43:30,262 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 86 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2023-08-29 20:43:30,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 516 flow [2023-08-29 20:43:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:43:30,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:43:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-29 20:43:30,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721435316336166 [2023-08-29 20:43:30,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-29 20:43:30,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-29 20:43:30,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:30,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-29 20:43:30,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:30,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:30,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:30,268 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 202 flow. Second operand 3 states and 500 transitions. [2023-08-29 20:43:30,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 516 flow [2023-08-29 20:43:30,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:43:30,274 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 222 flow [2023-08-29 20:43:30,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-29 20:43:30,275 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -36 predicate places. [2023-08-29 20:43:30,275 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 222 flow [2023-08-29 20:43:30,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:30,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:30,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:43:30,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:43:30,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:30,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash -723225260, now seen corresponding path program 1 times [2023-08-29 20:43:30,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:30,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196248784] [2023-08-29 20:43:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:30,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:30,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:30,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196248784] [2023-08-29 20:43:30,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196248784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:30,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:30,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:43:30,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23452354] [2023-08-29 20:43:30,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:30,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:43:30,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:30,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:43:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:43:30,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 353 [2023-08-29 20:43:30,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:30,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:30,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 353 [2023-08-29 20:43:30,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:32,755 INFO L130 PetriNetUnfolder]: 21552/30562 cut-off events. [2023-08-29 20:43:32,755 INFO L131 PetriNetUnfolder]: For 14892/15135 co-relation queries the response was YES. [2023-08-29 20:43:32,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88679 conditions, 30562 events. 21552/30562 cut-off events. For 14892/15135 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 195244 event pairs, 10261 based on Foata normal form. 0/25619 useless extension candidates. Maximal degree in co-relation 88671. Up to 19323 conditions per place. [2023-08-29 20:43:33,003 INFO L137 encePairwiseOnDemand]: 351/353 looper letters, 82 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-08-29 20:43:33,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 91 transitions, 514 flow [2023-08-29 20:43:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:43:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:43:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-29 20:43:33,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45042492917847027 [2023-08-29 20:43:33,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-29 20:43:33,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-29 20:43:33,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:33,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-29 20:43:33,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:33,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:33,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:33,010 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 222 flow. Second operand 3 states and 477 transitions. [2023-08-29 20:43:33,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 91 transitions, 514 flow [2023-08-29 20:43:33,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:43:33,026 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 222 flow [2023-08-29 20:43:33,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-29 20:43:33,028 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -36 predicate places. [2023-08-29 20:43:33,028 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 222 flow [2023-08-29 20:43:33,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:33,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:33,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:43:33,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:43:33,029 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:33,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1043112691, now seen corresponding path program 1 times [2023-08-29 20:43:33,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:33,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886743310] [2023-08-29 20:43:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:33,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:33,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886743310] [2023-08-29 20:43:33,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886743310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:33,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:33,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:43:33,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116486228] [2023-08-29 20:43:33,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:33,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:43:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:33,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:43:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:43:33,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 353 [2023-08-29 20:43:33,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:33,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:33,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 353 [2023-08-29 20:43:33,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:36,900 INFO L130 PetriNetUnfolder]: 32190/45776 cut-off events. [2023-08-29 20:43:36,901 INFO L131 PetriNetUnfolder]: For 25041/25396 co-relation queries the response was YES. [2023-08-29 20:43:37,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129385 conditions, 45776 events. 32190/45776 cut-off events. For 25041/25396 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 308627 event pairs, 16897 based on Foata normal form. 155/38340 useless extension candidates. Maximal degree in co-relation 129377. Up to 24319 conditions per place. [2023-08-29 20:43:37,312 INFO L137 encePairwiseOnDemand]: 347/353 looper letters, 81 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2023-08-29 20:43:37,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 538 flow [2023-08-29 20:43:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:43:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:43:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 622 transitions. [2023-08-29 20:43:37,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405099150141643 [2023-08-29 20:43:37,315 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 622 transitions. [2023-08-29 20:43:37,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 622 transitions. [2023-08-29 20:43:37,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:37,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 622 transitions. [2023-08-29 20:43:37,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:37,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:37,320 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:37,320 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 222 flow. Second operand 4 states and 622 transitions. [2023-08-29 20:43:37,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 538 flow [2023-08-29 20:43:37,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:43:37,338 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 255 flow [2023-08-29 20:43:37,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-29 20:43:37,339 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -33 predicate places. [2023-08-29 20:43:37,339 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 255 flow [2023-08-29 20:43:37,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:37,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:37,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:43:37,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:43:37,340 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:37,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:37,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1561724005, now seen corresponding path program 2 times [2023-08-29 20:43:37,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:37,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098000324] [2023-08-29 20:43:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:37,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098000324] [2023-08-29 20:43:37,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098000324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:37,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:37,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:43:37,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482567066] [2023-08-29 20:43:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:37,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:43:37,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:37,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:43:37,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:43:37,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 353 [2023-08-29 20:43:37,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:37,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:37,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 353 [2023-08-29 20:43:37,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:41,576 INFO L130 PetriNetUnfolder]: 31870/45329 cut-off events. [2023-08-29 20:43:41,576 INFO L131 PetriNetUnfolder]: For 30730/31073 co-relation queries the response was YES. [2023-08-29 20:43:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130063 conditions, 45329 events. 31870/45329 cut-off events. For 30730/31073 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 305503 event pairs, 17217 based on Foata normal form. 156/37909 useless extension candidates. Maximal degree in co-relation 130054. Up to 33358 conditions per place. [2023-08-29 20:43:41,887 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 82 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-08-29 20:43:41,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 549 flow [2023-08-29 20:43:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:43:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:43:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2023-08-29 20:43:41,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44192634560906513 [2023-08-29 20:43:41,889 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2023-08-29 20:43:41,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2023-08-29 20:43:41,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:41,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2023-08-29 20:43:41,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:41,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:41,893 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:41,893 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 255 flow. Second operand 4 states and 624 transitions. [2023-08-29 20:43:41,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 549 flow [2023-08-29 20:43:41,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 535 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:43:41,920 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 245 flow [2023-08-29 20:43:41,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-29 20:43:41,921 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -34 predicate places. [2023-08-29 20:43:41,921 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 245 flow [2023-08-29 20:43:41,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:41,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:41,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:43:41,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:43:41,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:41,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:41,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1832137713, now seen corresponding path program 1 times [2023-08-29 20:43:41,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:41,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429325834] [2023-08-29 20:43:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:41,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:43,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:43,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429325834] [2023-08-29 20:43:43,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429325834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:43,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:43,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 20:43:43,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755407841] [2023-08-29 20:43:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:43,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 20:43:43,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:43,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 20:43:43,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-29 20:43:43,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 353 [2023-08-29 20:43:43,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 245 flow. Second operand has 8 states, 8 states have (on average 121.875) internal successors, (975), 8 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:43,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:43,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 353 [2023-08-29 20:43:43,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:47,976 INFO L130 PetriNetUnfolder]: 32615/45872 cut-off events. [2023-08-29 20:43:47,977 INFO L131 PetriNetUnfolder]: For 29268/29268 co-relation queries the response was YES. [2023-08-29 20:43:48,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133577 conditions, 45872 events. 32615/45872 cut-off events. For 29268/29268 co-relation queries the response was YES. Maximal size of possible extension queue 2338. Compared 297074 event pairs, 19960 based on Foata normal form. 2/38739 useless extension candidates. Maximal degree in co-relation 133569. Up to 45266 conditions per place. [2023-08-29 20:43:48,225 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 77 selfloop transitions, 25 changer transitions 0/104 dead transitions. [2023-08-29 20:43:48,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 698 flow [2023-08-29 20:43:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:43:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:43:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1043 transitions. [2023-08-29 20:43:48,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693342776203966 [2023-08-29 20:43:48,229 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1043 transitions. [2023-08-29 20:43:48,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1043 transitions. [2023-08-29 20:43:48,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:48,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1043 transitions. [2023-08-29 20:43:48,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:48,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:48,235 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:48,235 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 245 flow. Second operand 8 states and 1043 transitions. [2023-08-29 20:43:48,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 698 flow [2023-08-29 20:43:48,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:43:48,250 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 487 flow [2023-08-29 20:43:48,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-08-29 20:43:48,251 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -25 predicate places. [2023-08-29 20:43:48,251 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 487 flow [2023-08-29 20:43:48,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.875) internal successors, (975), 8 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:48,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:48,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:43:48,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:43:48,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:48,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:48,253 INFO L85 PathProgramCache]: Analyzing trace with hash 997504222, now seen corresponding path program 1 times [2023-08-29 20:43:48,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:48,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154716584] [2023-08-29 20:43:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:48,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:48,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154716584] [2023-08-29 20:43:48,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154716584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:48,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:48,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:43:48,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932715286] [2023-08-29 20:43:48,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:48,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:43:48,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:43:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:43:48,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-08-29 20:43:48,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:48,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:48,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-08-29 20:43:48,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:43:54,046 INFO L130 PetriNetUnfolder]: 46346/65257 cut-off events. [2023-08-29 20:43:54,046 INFO L131 PetriNetUnfolder]: For 49271/49910 co-relation queries the response was YES. [2023-08-29 20:43:54,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194562 conditions, 65257 events. 46346/65257 cut-off events. For 49271/49910 co-relation queries the response was YES. Maximal size of possible extension queue 3130. Compared 453336 event pairs, 17696 based on Foata normal form. 334/56158 useless extension candidates. Maximal degree in co-relation 194550. Up to 38251 conditions per place. [2023-08-29 20:43:54,693 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 112 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-08-29 20:43:54,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 118 transitions, 867 flow [2023-08-29 20:43:54,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:43:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:43:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-29 20:43:54,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702549575070821 [2023-08-29 20:43:54,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-29 20:43:54,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-29 20:43:54,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:43:54,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-29 20:43:54,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:54,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:54,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:54,698 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 487 flow. Second operand 3 states and 498 transitions. [2023-08-29 20:43:54,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 118 transitions, 867 flow [2023-08-29 20:43:54,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 845 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-08-29 20:43:54,999 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 476 flow [2023-08-29 20:43:54,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2023-08-29 20:43:55,000 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -22 predicate places. [2023-08-29 20:43:55,000 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 476 flow [2023-08-29 20:43:55,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:55,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:43:55,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:43:55,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:43:55,001 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:43:55,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:43:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash -785422482, now seen corresponding path program 1 times [2023-08-29 20:43:55,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:43:55,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077492769] [2023-08-29 20:43:55,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:43:55,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:43:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:43:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:43:56,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:43:56,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077492769] [2023-08-29 20:43:56,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077492769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:43:56,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:43:56,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:43:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813018368] [2023-08-29 20:43:56,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:43:56,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:43:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:43:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:43:56,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:43:56,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 353 [2023-08-29 20:43:56,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 118.77777777777777) internal successors, (1069), 9 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:43:56,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:43:56,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 353 [2023-08-29 20:43:56,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:44:01,436 INFO L130 PetriNetUnfolder]: 39386/55649 cut-off events. [2023-08-29 20:44:01,436 INFO L131 PetriNetUnfolder]: For 46679/46802 co-relation queries the response was YES. [2023-08-29 20:44:01,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173139 conditions, 55649 events. 39386/55649 cut-off events. For 46679/46802 co-relation queries the response was YES. Maximal size of possible extension queue 3014. Compared 381358 event pairs, 23514 based on Foata normal form. 47/48271 useless extension candidates. Maximal degree in co-relation 173125. Up to 54678 conditions per place. [2023-08-29 20:44:01,812 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 106 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2023-08-29 20:44:01,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 126 transitions, 932 flow [2023-08-29 20:44:01,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 20:44:01,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 20:44:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1136 transitions. [2023-08-29 20:44:01,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.357570034623859 [2023-08-29 20:44:01,815 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1136 transitions. [2023-08-29 20:44:01,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1136 transitions. [2023-08-29 20:44:01,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:44:01,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1136 transitions. [2023-08-29 20:44:01,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.22222222222223) internal successors, (1136), 9 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:01,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:01,821 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:01,822 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 476 flow. Second operand 9 states and 1136 transitions. [2023-08-29 20:44:01,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 126 transitions, 932 flow [2023-08-29 20:44:02,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 126 transitions, 900 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-29 20:44:02,191 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 614 flow [2023-08-29 20:44:02,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=614, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2023-08-29 20:44:02,191 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -11 predicate places. [2023-08-29 20:44:02,192 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 614 flow [2023-08-29 20:44:02,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.77777777777777) internal successors, (1069), 9 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:02,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:44:02,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:44:02,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:44:02,193 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:44:02,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:44:02,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1197653368, now seen corresponding path program 2 times [2023-08-29 20:44:02,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:44:02,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777274192] [2023-08-29 20:44:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:44:02,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:44:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:44:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:44:04,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:44:04,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777274192] [2023-08-29 20:44:04,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777274192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:44:04,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:44:04,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 20:44:04,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023545535] [2023-08-29 20:44:04,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:44:04,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 20:44:04,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:44:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 20:44:04,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-29 20:44:04,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 353 [2023-08-29 20:44:04,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 614 flow. Second operand has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:04,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:44:04,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 353 [2023-08-29 20:44:04,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:44:09,871 INFO L130 PetriNetUnfolder]: 39464/55768 cut-off events. [2023-08-29 20:44:09,871 INFO L131 PetriNetUnfolder]: For 45447/45564 co-relation queries the response was YES. [2023-08-29 20:44:10,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174484 conditions, 55768 events. 39464/55768 cut-off events. For 45447/45564 co-relation queries the response was YES. Maximal size of possible extension queue 3020. Compared 380641 event pairs, 16478 based on Foata normal form. 81/48425 useless extension candidates. Maximal degree in co-relation 174466. Up to 53324 conditions per place. [2023-08-29 20:44:10,291 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 114 selfloop transitions, 66 changer transitions 0/182 dead transitions. [2023-08-29 20:44:10,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 182 transitions, 1412 flow [2023-08-29 20:44:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 20:44:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 20:44:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1552 transitions. [2023-08-29 20:44:10,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663833805476865 [2023-08-29 20:44:10,296 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1552 transitions. [2023-08-29 20:44:10,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1552 transitions. [2023-08-29 20:44:10,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:44:10,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1552 transitions. [2023-08-29 20:44:10,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.33333333333334) internal successors, (1552), 12 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:10,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:10,305 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:10,305 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 614 flow. Second operand 12 states and 1552 transitions. [2023-08-29 20:44:10,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 182 transitions, 1412 flow [2023-08-29 20:44:11,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 182 transitions, 1373 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-29 20:44:11,087 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 1049 flow [2023-08-29 20:44:11,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1049, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2023-08-29 20:44:11,088 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 6 predicate places. [2023-08-29 20:44:11,088 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 1049 flow [2023-08-29 20:44:11,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:11,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:44:11,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:44:11,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 20:44:11,089 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:44:11,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:44:11,089 INFO L85 PathProgramCache]: Analyzing trace with hash -786790497, now seen corresponding path program 1 times [2023-08-29 20:44:11,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:44:11,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628933748] [2023-08-29 20:44:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:44:11,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:44:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:44:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:44:12,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:44:12,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628933748] [2023-08-29 20:44:12,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628933748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:44:12,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:44:12,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 20:44:12,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891632319] [2023-08-29 20:44:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:44:12,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 20:44:12,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:44:12,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 20:44:12,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-29 20:44:12,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-08-29 20:44:12,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 1049 flow. Second operand has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:12,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:44:12,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-08-29 20:44:12,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:44:18,201 INFO L130 PetriNetUnfolder]: 39457/55772 cut-off events. [2023-08-29 20:44:18,201 INFO L131 PetriNetUnfolder]: For 73335/73446 co-relation queries the response was YES. [2023-08-29 20:44:18,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193526 conditions, 55772 events. 39457/55772 cut-off events. For 73335/73446 co-relation queries the response was YES. Maximal size of possible extension queue 3019. Compared 382759 event pairs, 22911 based on Foata normal form. 39/48386 useless extension candidates. Maximal degree in co-relation 193501. Up to 54601 conditions per place. [2023-08-29 20:44:18,718 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 127 selfloop transitions, 44 changer transitions 0/173 dead transitions. [2023-08-29 20:44:18,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 173 transitions, 1687 flow [2023-08-29 20:44:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:44:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:44:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1057 transitions. [2023-08-29 20:44:18,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742917847025496 [2023-08-29 20:44:18,721 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1057 transitions. [2023-08-29 20:44:18,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1057 transitions. [2023-08-29 20:44:18,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:44:18,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1057 transitions. [2023-08-29 20:44:18,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.125) internal successors, (1057), 8 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:18,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:18,727 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:18,728 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 1049 flow. Second operand 8 states and 1057 transitions. [2023-08-29 20:44:18,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 173 transitions, 1687 flow [2023-08-29 20:44:21,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 173 transitions, 1627 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-29 20:44:21,920 INFO L231 Difference]: Finished difference. Result has 110 places, 146 transitions, 1320 flow [2023-08-29 20:44:21,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1320, PETRI_PLACES=110, PETRI_TRANSITIONS=146} [2023-08-29 20:44:21,920 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 14 predicate places. [2023-08-29 20:44:21,921 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 146 transitions, 1320 flow [2023-08-29 20:44:21,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:21,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:44:21,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:44:21,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 20:44:21,922 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:44:21,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:44:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1615535047, now seen corresponding path program 1 times [2023-08-29 20:44:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:44:21,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464982763] [2023-08-29 20:44:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:44:21,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:44:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:44:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:44:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:44:22,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464982763] [2023-08-29 20:44:22,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464982763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:44:22,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:44:22,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:44:22,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664815044] [2023-08-29 20:44:22,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:44:22,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:44:22,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:44:22,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:44:22,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:44:22,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 353 [2023-08-29 20:44:22,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 146 transitions, 1320 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:22,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:44:22,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 353 [2023-08-29 20:44:22,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:44:28,170 INFO L130 PetriNetUnfolder]: 38129/54448 cut-off events. [2023-08-29 20:44:28,170 INFO L131 PetriNetUnfolder]: For 86485/86608 co-relation queries the response was YES. [2023-08-29 20:44:28,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193345 conditions, 54448 events. 38129/54448 cut-off events. For 86485/86608 co-relation queries the response was YES. Maximal size of possible extension queue 3015. Compared 379737 event pairs, 13159 based on Foata normal form. 79/47998 useless extension candidates. Maximal degree in co-relation 193316. Up to 45015 conditions per place. [2023-08-29 20:44:28,689 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 147 selfloop transitions, 20 changer transitions 0/176 dead transitions. [2023-08-29 20:44:28,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 176 transitions, 1844 flow [2023-08-29 20:44:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:44:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:44:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-29 20:44:28,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636449480642115 [2023-08-29 20:44:28,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-29 20:44:28,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-29 20:44:28,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:44:28,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-29 20:44:28,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:28,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:28,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:28,694 INFO L175 Difference]: Start difference. First operand has 110 places, 146 transitions, 1320 flow. Second operand 3 states and 491 transitions. [2023-08-29 20:44:28,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 176 transitions, 1844 flow [2023-08-29 20:44:32,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 176 transitions, 1812 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-29 20:44:32,178 INFO L231 Difference]: Finished difference. Result has 111 places, 146 transitions, 1350 flow [2023-08-29 20:44:32,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1350, PETRI_PLACES=111, PETRI_TRANSITIONS=146} [2023-08-29 20:44:32,179 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 15 predicate places. [2023-08-29 20:44:32,179 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 146 transitions, 1350 flow [2023-08-29 20:44:32,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:32,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:44:32,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:44:32,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 20:44:32,180 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting P3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:44:32,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:44:32,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2023297229, now seen corresponding path program 1 times [2023-08-29 20:44:32,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:44:32,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56563167] [2023-08-29 20:44:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:44:32,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:44:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:44:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:44:32,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:44:32,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56563167] [2023-08-29 20:44:32,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56563167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:44:32,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:44:32,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:44:32,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075333266] [2023-08-29 20:44:32,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:44:32,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:44:32,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:44:32,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:44:32,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:44:32,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 353 [2023-08-29 20:44:32,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 146 transitions, 1350 flow. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:32,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:44:32,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 353 [2023-08-29 20:44:32,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:44:37,538 INFO L130 PetriNetUnfolder]: 34842/49287 cut-off events. [2023-08-29 20:44:37,538 INFO L131 PetriNetUnfolder]: For 90942/91038 co-relation queries the response was YES. [2023-08-29 20:44:37,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181866 conditions, 49287 events. 34842/49287 cut-off events. For 90942/91038 co-relation queries the response was YES. Maximal size of possible extension queue 2750. Compared 330374 event pairs, 9985 based on Foata normal form. 309/43859 useless extension candidates. Maximal degree in co-relation 181835. Up to 22989 conditions per place. [2023-08-29 20:44:37,970 INFO L137 encePairwiseOnDemand]: 335/353 looper letters, 136 selfloop transitions, 42 changer transitions 0/180 dead transitions. [2023-08-29 20:44:37,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 180 transitions, 1942 flow [2023-08-29 20:44:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:44:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:44:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 602 transitions. [2023-08-29 20:44:37,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263456090651558 [2023-08-29 20:44:37,972 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 602 transitions. [2023-08-29 20:44:37,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 602 transitions. [2023-08-29 20:44:37,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:44:37,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 602 transitions. [2023-08-29 20:44:37,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:37,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:37,976 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:37,976 INFO L175 Difference]: Start difference. First operand has 111 places, 146 transitions, 1350 flow. Second operand 4 states and 602 transitions. [2023-08-29 20:44:37,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 180 transitions, 1942 flow [2023-08-29 20:44:41,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 180 transitions, 1892 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 20:44:41,251 INFO L231 Difference]: Finished difference. Result has 114 places, 156 transitions, 1604 flow [2023-08-29 20:44:41,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1604, PETRI_PLACES=114, PETRI_TRANSITIONS=156} [2023-08-29 20:44:41,251 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 18 predicate places. [2023-08-29 20:44:41,251 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 156 transitions, 1604 flow [2023-08-29 20:44:41,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:41,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:44:41,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:44:41,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 20:44:41,252 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:44:41,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:44:41,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1938774266, now seen corresponding path program 1 times [2023-08-29 20:44:41,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:44:41,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470594886] [2023-08-29 20:44:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:44:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:44:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:44:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:44:42,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:44:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470594886] [2023-08-29 20:44:42,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470594886] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:44:42,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:44:42,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 20:44:42,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538415712] [2023-08-29 20:44:42,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:44:42,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 20:44:42,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:44:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 20:44:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-29 20:44:42,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-08-29 20:44:42,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 156 transitions, 1604 flow. Second operand has 10 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:42,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:44:42,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-08-29 20:44:42,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:44:48,572 INFO L130 PetriNetUnfolder]: 35958/50777 cut-off events. [2023-08-29 20:44:48,572 INFO L131 PetriNetUnfolder]: For 128772/128871 co-relation queries the response was YES. [2023-08-29 20:44:48,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209581 conditions, 50777 events. 35958/50777 cut-off events. For 128772/128871 co-relation queries the response was YES. Maximal size of possible extension queue 2771. Compared 342051 event pairs, 14348 based on Foata normal form. 39/46584 useless extension candidates. Maximal degree in co-relation 209549. Up to 48493 conditions per place. [2023-08-29 20:44:49,127 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 180 selfloop transitions, 44 changer transitions 0/226 dead transitions. [2023-08-29 20:44:49,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 226 transitions, 2530 flow [2023-08-29 20:44:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 20:44:49,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 20:44:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1429 transitions. [2023-08-29 20:44:49,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36801442183878447 [2023-08-29 20:44:49,129 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1429 transitions. [2023-08-29 20:44:49,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1429 transitions. [2023-08-29 20:44:49,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:44:49,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1429 transitions. [2023-08-29 20:44:49,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.9090909090909) internal successors, (1429), 11 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:49,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:49,135 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:49,135 INFO L175 Difference]: Start difference. First operand has 114 places, 156 transitions, 1604 flow. Second operand 11 states and 1429 transitions. [2023-08-29 20:44:49,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 226 transitions, 2530 flow [2023-08-29 20:44:52,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 226 transitions, 2522 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:44:52,299 INFO L231 Difference]: Finished difference. Result has 129 places, 182 transitions, 2061 flow [2023-08-29 20:44:52,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2061, PETRI_PLACES=129, PETRI_TRANSITIONS=182} [2023-08-29 20:44:52,299 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 33 predicate places. [2023-08-29 20:44:52,300 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 182 transitions, 2061 flow [2023-08-29 20:44:52,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:52,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:44:52,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:44:52,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 20:44:52,300 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:44:52,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:44:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1686338732, now seen corresponding path program 2 times [2023-08-29 20:44:52,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:44:52,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269420099] [2023-08-29 20:44:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:44:52,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:44:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:44:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:44:53,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:44:53,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269420099] [2023-08-29 20:44:53,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269420099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:44:53,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:44:53,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 20:44:53,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359874699] [2023-08-29 20:44:53,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:44:53,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 20:44:53,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:44:53,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 20:44:53,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-29 20:44:53,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-08-29 20:44:53,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 182 transitions, 2061 flow. Second operand has 10 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:44:53,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:44:53,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-08-29 20:44:53,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:44:59,851 INFO L130 PetriNetUnfolder]: 35936/50804 cut-off events. [2023-08-29 20:44:59,851 INFO L131 PetriNetUnfolder]: For 154835/154931 co-relation queries the response was YES. [2023-08-29 20:45:00,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218832 conditions, 50804 events. 35936/50804 cut-off events. For 154835/154931 co-relation queries the response was YES. Maximal size of possible extension queue 2791. Compared 343407 event pairs, 9793 based on Foata normal form. 38/46610 useless extension candidates. Maximal degree in co-relation 218793. Up to 47174 conditions per place. [2023-08-29 20:45:00,380 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 185 selfloop transitions, 82 changer transitions 0/269 dead transitions. [2023-08-29 20:45:00,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 269 transitions, 3304 flow [2023-08-29 20:45:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 20:45:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 20:45:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1559 transitions. [2023-08-29 20:45:00,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36803588290840417 [2023-08-29 20:45:00,384 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1559 transitions. [2023-08-29 20:45:00,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1559 transitions. [2023-08-29 20:45:00,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:00,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1559 transitions. [2023-08-29 20:45:00,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.91666666666666) internal successors, (1559), 12 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:00,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:00,392 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:00,392 INFO L175 Difference]: Start difference. First operand has 129 places, 182 transitions, 2061 flow. Second operand 12 states and 1559 transitions. [2023-08-29 20:45:00,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 269 transitions, 3304 flow [2023-08-29 20:45:04,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 269 transitions, 3212 flow, removed 41 selfloop flow, removed 2 redundant places. [2023-08-29 20:45:04,365 INFO L231 Difference]: Finished difference. Result has 144 places, 217 transitions, 2729 flow [2023-08-29 20:45:04,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2729, PETRI_PLACES=144, PETRI_TRANSITIONS=217} [2023-08-29 20:45:04,367 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 48 predicate places. [2023-08-29 20:45:04,367 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 217 transitions, 2729 flow [2023-08-29 20:45:04,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:04,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:04,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:45:04,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 20:45:04,368 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-29 20:45:04,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1374379365, now seen corresponding path program 1 times [2023-08-29 20:45:04,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:04,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477313476] [2023-08-29 20:45:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:04,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:04,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:04,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477313476] [2023-08-29 20:45:04,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477313476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:04,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:04,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:45:04,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889686057] [2023-08-29 20:45:04,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:04,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:45:04,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:45:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:45:05,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 353 [2023-08-29 20:45:05,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 217 transitions, 2729 flow. Second operand has 5 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:05,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:05,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 353 [2023-08-29 20:45:05,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:45:12,660 INFO L130 PetriNetUnfolder]: 41729/58797 cut-off events. [2023-08-29 20:45:12,660 INFO L131 PetriNetUnfolder]: For 219830/219913 co-relation queries the response was YES. [2023-08-29 20:45:13,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270134 conditions, 58797 events. 41729/58797 cut-off events. For 219830/219913 co-relation queries the response was YES. Maximal size of possible extension queue 3228. Compared 401748 event pairs, 22348 based on Foata normal form. 91/53651 useless extension candidates. Maximal degree in co-relation 270089. Up to 42277 conditions per place. [2023-08-29 20:45:13,379 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 255 selfloop transitions, 75 changer transitions 0/333 dead transitions. [2023-08-29 20:45:13,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 333 transitions, 4424 flow [2023-08-29 20:45:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:45:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:45:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 810 transitions. [2023-08-29 20:45:13,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45892351274787535 [2023-08-29 20:45:13,382 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 810 transitions. [2023-08-29 20:45:13,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 810 transitions. [2023-08-29 20:45:13,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:45:13,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 810 transitions. [2023-08-29 20:45:13,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:13,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:13,385 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 353.0) internal successors, (2118), 6 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:13,385 INFO L175 Difference]: Start difference. First operand has 144 places, 217 transitions, 2729 flow. Second operand 5 states and 810 transitions. [2023-08-29 20:45:13,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 333 transitions, 4424 flow