./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.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/safe030_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 --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 20:50:46,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:50:46,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:50:46,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:50:46,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:50:46,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:50:46,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:50:46,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:50:46,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:50:46,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:50:46,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:50:46,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:50:46,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:50:46,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:50:46,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:50:46,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:50:46,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:50:46,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:50:46,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:50:46,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:50:46,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:50:46,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:50:46,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:50:46,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:50:46,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:50:46,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:50:46,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:50:46,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:50:46,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:50:46,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:50:46,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:50:46,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:50:46,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:50:46,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:50:46,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:50:46,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:50:46,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:50:46,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:50:46,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:50:46,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:50:46,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:50:46,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:50:46,249 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:50:46,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:50:46,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:50:46,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:50:46,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:50:46,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:50:46,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:50:46,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:50:46,253 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:50:46,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:50:46,254 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:50:46,254 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:50:46,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:50:46,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:50:46,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:50:46,255 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:50:46,255 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:50:46,255 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:50:46,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:50:46,256 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:50:46,256 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:50:46,256 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:50:46,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:50:46,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:50:46,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:50:46,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:50:46,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:50:46,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:50:46,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:50:46,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:50:46,258 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:50:46,258 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:50:46,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:50:46,259 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:50:46,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1730fa7f98e17ee8b58920ef3daf63ee88225f1b42924032a532b5f5db33fba5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:50:46,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:50:46,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:50:46,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:50:46,592 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:50:46,593 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:50:46,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2023-08-29 20:50:47,680 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:50:47,912 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:50:47,912 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.i [2023-08-29 20:50:47,927 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7028c1d96/e07a3e136bb0458a9c723d3478752bf4/FLAG16a1dbc67 [2023-08-29 20:50:47,939 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7028c1d96/e07a3e136bb0458a9c723d3478752bf4 [2023-08-29 20:50:47,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:50:47,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:50:47,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:50:47,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:50:47,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:50:47,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:50:47" (1/1) ... [2023-08-29 20:50:47,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69770d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:47, skipping insertion in model container [2023-08-29 20:50:47,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:50:47" (1/1) ... [2023-08-29 20:50:47,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:50:48,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:50:48,176 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/safe030_tso.i[945,958] [2023-08-29 20:50:48,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:50:48,370 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:50:48,385 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/safe030_tso.i[945,958] [2023-08-29 20:50:48,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:50:48,444 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:50:48,445 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:50:48,451 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:50:48,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48 WrapperNode [2023-08-29 20:50:48,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:50:48,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:50:48,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:50:48,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:50:48,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,517 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-08-29 20:50:48,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:50:48,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:50:48,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:50:48,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:50:48,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,553 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:50:48,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:50:48,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:50:48,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:50:48,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (1/1) ... [2023-08-29 20:50:48,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:50:48,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:50:48,592 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 20:50:48,617 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 20:50:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:50:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:50:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:50:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:50:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:50:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:50:48,635 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:50:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:50:48,635 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:50:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:50:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:50:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:50:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:50:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:50:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:50:48,638 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 20:50:48,809 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:50:48,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:50:49,037 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:50:49,044 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:50:49,046 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:50:49,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:50:49 BoogieIcfgContainer [2023-08-29 20:50:49,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:50:49,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:50:49,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:50:49,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:50:49,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:50:47" (1/3) ... [2023-08-29 20:50:49,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b756447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:50:49, skipping insertion in model container [2023-08-29 20:50:49,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:50:48" (2/3) ... [2023-08-29 20:50:49,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b756447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:50:49, skipping insertion in model container [2023-08-29 20:50:49,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:50:49" (3/3) ... [2023-08-29 20:50:49,056 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_tso.i [2023-08-29 20:50:49,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:50:49,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-29 20:50:49,072 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:50:49,160 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:50:49,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2023-08-29 20:50:49,259 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-08-29 20:50:49,262 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:50:49,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-29 20:50:49,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2023-08-29 20:50:49,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 86 transitions, 181 flow [2023-08-29 20:50:49,276 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:50:49,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 86 transitions, 181 flow [2023-08-29 20:50:49,293 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 86 transitions, 181 flow [2023-08-29 20:50:49,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 181 flow [2023-08-29 20:50:49,334 INFO L130 PetriNetUnfolder]: 2/86 cut-off events. [2023-08-29 20:50:49,335 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:50:49,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-29 20:50:49,337 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-29 20:50:51,738 INFO L134 LiptonReduction]: Checked pairs total: 2970 [2023-08-29 20:50:51,739 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-29 20:50:51,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:50:51,757 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;@18b962b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:50:51,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-29 20:50:51,759 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 20:50:51,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:50:51,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:51,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:50:51,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:51,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:51,768 INFO L85 PathProgramCache]: Analyzing trace with hash 326, now seen corresponding path program 1 times [2023-08-29 20:50:51,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:51,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977310598] [2023-08-29 20:50:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:51,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:51,867 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 20:50:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977310598] [2023-08-29 20:50:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977310598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:51,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:51,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:50:51,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219300768] [2023-08-29 20:50:51,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:51,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:50:51,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:51,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:50:51,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:50:51,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 177 [2023-08-29 20:50:51,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:51,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:51,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 177 [2023-08-29 20:50:51,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:52,023 INFO L130 PetriNetUnfolder]: 272/449 cut-off events. [2023-08-29 20:50:52,024 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 20:50:52,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 449 events. 272/449 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1930 event pairs, 272 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 901. Up to 433 conditions per place. [2023-08-29 20:50:52,028 INFO L137 encePairwiseOnDemand]: 170/177 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-29 20:50:52,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-08-29 20:50:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:50:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:50:52,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2023-08-29 20:50:52,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556497175141243 [2023-08-29 20:50:52,045 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2023-08-29 20:50:52,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2023-08-29 20:50:52,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:52,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2023-08-29 20:50:52,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:52,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:52,061 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:52,063 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 197 transitions. [2023-08-29 20:50:52,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-08-29 20:50:52,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:50:52,066 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-08-29 20:50:52,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-29 20:50:52,071 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-29 20:50:52,071 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-08-29 20:50:52,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:52,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:52,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:52,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:50:52,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:52,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash 739318113, now seen corresponding path program 1 times [2023-08-29 20:50:52,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:52,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523982432] [2023-08-29 20:50:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:52,604 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 20:50:52,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:52,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523982432] [2023-08-29 20:50:52,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523982432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:52,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:52,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:50:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848200805] [2023-08-29 20:50:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:50:52,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:50:52,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:50:52,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-29 20:50:52,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:52,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:52,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-29 20:50:52,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:52,879 INFO L130 PetriNetUnfolder]: 1245/1856 cut-off events. [2023-08-29 20:50:52,879 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:50:52,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3765 conditions, 1856 events. 1245/1856 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8364 event pairs, 349 based on Foata normal form. 0/1763 useless extension candidates. Maximal degree in co-relation 3762. Up to 719 conditions per place. [2023-08-29 20:50:52,911 INFO L137 encePairwiseOnDemand]: 167/177 looper letters, 40 selfloop transitions, 16 changer transitions 0/56 dead transitions. [2023-08-29 20:50:52,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 56 transitions, 234 flow [2023-08-29 20:50:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:50:52,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:50:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2023-08-29 20:50:52,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5005649717514125 [2023-08-29 20:50:52,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2023-08-29 20:50:52,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2023-08-29 20:50:52,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:52,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2023-08-29 20:50:52,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:52,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:52,925 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:52,925 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 5 states and 443 transitions. [2023-08-29 20:50:52,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 56 transitions, 234 flow [2023-08-29 20:50:52,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 56 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:50:52,928 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 172 flow [2023-08-29 20:50:52,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-29 20:50:52,929 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-29 20:50:52,929 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 172 flow [2023-08-29 20:50:52,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:52,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:52,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:52,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:50:52,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:52,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 739318144, now seen corresponding path program 1 times [2023-08-29 20:50:52,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:52,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831212045] [2023-08-29 20:50:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:52,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:53,193 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 20:50:53,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:53,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831212045] [2023-08-29 20:50:53,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831212045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:53,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:53,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:50:53,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673001752] [2023-08-29 20:50:53,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:53,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:50:53,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:53,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:50:53,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:50:53,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 177 [2023-08-29 20:50:53,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:53,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 177 [2023-08-29 20:50:53,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:53,403 INFO L130 PetriNetUnfolder]: 702/1181 cut-off events. [2023-08-29 20:50:53,403 INFO L131 PetriNetUnfolder]: For 1415/1495 co-relation queries the response was YES. [2023-08-29 20:50:53,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3573 conditions, 1181 events. 702/1181 cut-off events. For 1415/1495 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6315 event pairs, 266 based on Foata normal form. 212/1353 useless extension candidates. Maximal degree in co-relation 3566. Up to 919 conditions per place. [2023-08-29 20:50:53,410 INFO L137 encePairwiseOnDemand]: 173/177 looper letters, 27 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-08-29 20:50:53,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 250 flow [2023-08-29 20:50:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:50:53,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:50:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 382 transitions. [2023-08-29 20:50:53,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43163841807909603 [2023-08-29 20:50:53,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 382 transitions. [2023-08-29 20:50:53,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 382 transitions. [2023-08-29 20:50:53,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:53,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 382 transitions. [2023-08-29 20:50:53,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,415 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,415 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 172 flow. Second operand 5 states and 382 transitions. [2023-08-29 20:50:53,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 250 flow [2023-08-29 20:50:53,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:50:53,419 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 160 flow [2023-08-29 20:50:53,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-08-29 20:50:53,420 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-29 20:50:53,420 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 160 flow [2023-08-29 20:50:53,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:53,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:53,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:50:53,421 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:53,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:53,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1656357279, now seen corresponding path program 1 times [2023-08-29 20:50:53,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:53,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984422080] [2023-08-29 20:50:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:53,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:53,614 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 20:50:53,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:53,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984422080] [2023-08-29 20:50:53,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984422080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:53,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:50:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419888846] [2023-08-29 20:50:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:53,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:50:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:53,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:50:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:50:53,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-29 20:50:53,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:53,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-29 20:50:53,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:53,841 INFO L130 PetriNetUnfolder]: 990/1567 cut-off events. [2023-08-29 20:50:53,842 INFO L131 PetriNetUnfolder]: For 1641/1641 co-relation queries the response was YES. [2023-08-29 20:50:53,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5182 conditions, 1567 events. 990/1567 cut-off events. For 1641/1641 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7632 event pairs, 103 based on Foata normal form. 86/1653 useless extension candidates. Maximal degree in co-relation 5174. Up to 664 conditions per place. [2023-08-29 20:50:53,851 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 35 selfloop transitions, 11 changer transitions 41/87 dead transitions. [2023-08-29 20:50:53,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 87 transitions, 604 flow [2023-08-29 20:50:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:50:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:50:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 610 transitions. [2023-08-29 20:50:53,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923325262308313 [2023-08-29 20:50:53,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 610 transitions. [2023-08-29 20:50:53,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 610 transitions. [2023-08-29 20:50:53,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:53,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 610 transitions. [2023-08-29 20:50:53,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,862 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,862 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 160 flow. Second operand 7 states and 610 transitions. [2023-08-29 20:50:53,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 87 transitions, 604 flow [2023-08-29 20:50:53,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 87 transitions, 595 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:50:53,870 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 227 flow [2023-08-29 20:50:53,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=227, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-08-29 20:50:53,872 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-29 20:50:53,872 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 227 flow [2023-08-29 20:50:53,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:53,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:53,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:53,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:50:53,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:53,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1443983317, now seen corresponding path program 1 times [2023-08-29 20:50:53,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:53,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544548953] [2023-08-29 20:50:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:53,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:54,024 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 20:50:54,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:54,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544548953] [2023-08-29 20:50:54,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544548953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:54,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:54,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:50:54,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641750533] [2023-08-29 20:50:54,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:54,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:50:54,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:54,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:50:54,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:50:54,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-29 20:50:54,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:54,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-29 20:50:54,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:54,220 INFO L130 PetriNetUnfolder]: 740/1183 cut-off events. [2023-08-29 20:50:54,221 INFO L131 PetriNetUnfolder]: For 4376/4376 co-relation queries the response was YES. [2023-08-29 20:50:54,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4959 conditions, 1183 events. 740/1183 cut-off events. For 4376/4376 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5308 event pairs, 145 based on Foata normal form. 66/1249 useless extension candidates. Maximal degree in co-relation 4946. Up to 626 conditions per place. [2023-08-29 20:50:54,229 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 40 selfloop transitions, 17 changer transitions 24/81 dead transitions. [2023-08-29 20:50:54,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 693 flow [2023-08-29 20:50:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:50:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:50:54,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2023-08-29 20:50:54,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48991121872477805 [2023-08-29 20:50:54,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2023-08-29 20:50:54,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2023-08-29 20:50:54,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:54,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2023-08-29 20:50:54,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,236 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 227 flow. Second operand 7 states and 607 transitions. [2023-08-29 20:50:54,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 693 flow [2023-08-29 20:50:54,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 81 transitions, 627 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-29 20:50:54,248 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 359 flow [2023-08-29 20:50:54,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-29 20:50:54,249 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-08-29 20:50:54,249 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 359 flow [2023-08-29 20:50:54,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:54,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:54,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:50:54,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:54,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:54,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1814304399, now seen corresponding path program 1 times [2023-08-29 20:50:54,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:54,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590116454] [2023-08-29 20:50:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:54,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:54,377 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 20:50:54,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:54,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590116454] [2023-08-29 20:50:54,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590116454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:54,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:54,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:50:54,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003497833] [2023-08-29 20:50:54,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:54,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:50:54,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:54,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:50:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:50:54,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 177 [2023-08-29 20:50:54,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:54,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 177 [2023-08-29 20:50:54,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:54,523 INFO L130 PetriNetUnfolder]: 562/958 cut-off events. [2023-08-29 20:50:54,524 INFO L131 PetriNetUnfolder]: For 4793/4842 co-relation queries the response was YES. [2023-08-29 20:50:54,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 958 events. 562/958 cut-off events. For 4793/4842 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4543 event pairs, 137 based on Foata normal form. 77/1027 useless extension candidates. Maximal degree in co-relation 4226. Up to 657 conditions per place. [2023-08-29 20:50:54,533 INFO L137 encePairwiseOnDemand]: 172/177 looper letters, 35 selfloop transitions, 7 changer transitions 12/64 dead transitions. [2023-08-29 20:50:54,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 640 flow [2023-08-29 20:50:54,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:50:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:50:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-29 20:50:54,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2023-08-29 20:50:54,535 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-29 20:50:54,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-29 20:50:54,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:54,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-29 20:50:54,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,538 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,538 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 359 flow. Second operand 5 states and 450 transitions. [2023-08-29 20:50:54,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 640 flow [2023-08-29 20:50:54,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 624 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-29 20:50:54,549 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 436 flow [2023-08-29 20:50:54,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-08-29 20:50:54,550 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2023-08-29 20:50:54,550 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 436 flow [2023-08-29 20:50:54,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:54,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:54,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:50:54,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:54,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:54,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1676032553, now seen corresponding path program 1 times [2023-08-29 20:50:54,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:54,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838998963] [2023-08-29 20:50:54,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:54,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:54,663 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 20:50:54,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:54,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838998963] [2023-08-29 20:50:54,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838998963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:54,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:54,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:50:54,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299432779] [2023-08-29 20:50:54,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:54,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:50:54,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:50:54,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:50:54,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 177 [2023-08-29 20:50:54,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 436 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:54,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 177 [2023-08-29 20:50:54,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:54,837 INFO L130 PetriNetUnfolder]: 619/1099 cut-off events. [2023-08-29 20:50:54,837 INFO L131 PetriNetUnfolder]: For 6155/6199 co-relation queries the response was YES. [2023-08-29 20:50:54,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 1099 events. 619/1099 cut-off events. For 6155/6199 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5849 event pairs, 211 based on Foata normal form. 73/1138 useless extension candidates. Maximal degree in co-relation 5022. Up to 504 conditions per place. [2023-08-29 20:50:54,847 INFO L137 encePairwiseOnDemand]: 173/177 looper letters, 37 selfloop transitions, 6 changer transitions 10/64 dead transitions. [2023-08-29 20:50:54,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 635 flow [2023-08-29 20:50:54,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:50:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:50:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2023-08-29 20:50:54,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107344632768361 [2023-08-29 20:50:54,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2023-08-29 20:50:54,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2023-08-29 20:50:54,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:54,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2023-08-29 20:50:54,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,853 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,854 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 436 flow. Second operand 5 states and 452 transitions. [2023-08-29 20:50:54,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 635 flow [2023-08-29 20:50:54,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 612 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-29 20:50:54,866 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 435 flow [2023-08-29 20:50:54,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2023-08-29 20:50:54,867 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-08-29 20:50:54,867 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 435 flow [2023-08-29 20:50:54,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:54,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:54,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:54,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:50:54,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:54,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:54,869 INFO L85 PathProgramCache]: Analyzing trace with hash -628674621, now seen corresponding path program 1 times [2023-08-29 20:50:54,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:54,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716512366] [2023-08-29 20:50:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:54,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:55,046 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 20:50:55,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:55,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716512366] [2023-08-29 20:50:55,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716512366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:55,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:55,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:50:55,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936227136] [2023-08-29 20:50:55,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:55,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:50:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:55,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:50:55,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:50:55,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 177 [2023-08-29 20:50:55,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:55,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 177 [2023-08-29 20:50:55,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:55,175 INFO L130 PetriNetUnfolder]: 389/773 cut-off events. [2023-08-29 20:50:55,175 INFO L131 PetriNetUnfolder]: For 4896/4992 co-relation queries the response was YES. [2023-08-29 20:50:55,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 773 events. 389/773 cut-off events. For 4896/4992 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4436 event pairs, 76 based on Foata normal form. 90/842 useless extension candidates. Maximal degree in co-relation 3387. Up to 415 conditions per place. [2023-08-29 20:50:55,183 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 66 selfloop transitions, 8 changer transitions 14/103 dead transitions. [2023-08-29 20:50:55,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 103 transitions, 1152 flow [2023-08-29 20:50:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:50:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:50:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-29 20:50:55,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2023-08-29 20:50:55,185 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-29 20:50:55,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-29 20:50:55,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:55,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-29 20:50:55,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,188 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,188 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 435 flow. Second operand 5 states and 450 transitions. [2023-08-29 20:50:55,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 103 transitions, 1152 flow [2023-08-29 20:50:55,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 103 transitions, 1124 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-29 20:50:55,199 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 479 flow [2023-08-29 20:50:55,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2023-08-29 20:50:55,201 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-08-29 20:50:55,202 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 479 flow [2023-08-29 20:50:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:55,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:55,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:50:55,203 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:55,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash 79656494, now seen corresponding path program 1 times [2023-08-29 20:50:55,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:55,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699501400] [2023-08-29 20:50:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:55,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:55,352 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 20:50:55,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:55,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699501400] [2023-08-29 20:50:55,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699501400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:55,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:55,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:50:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525664367] [2023-08-29 20:50:55,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:55,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:50:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:50:55,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:50:55,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-29 20:50:55,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:55,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-29 20:50:55,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:55,575 INFO L130 PetriNetUnfolder]: 746/1343 cut-off events. [2023-08-29 20:50:55,576 INFO L131 PetriNetUnfolder]: For 6643/6643 co-relation queries the response was YES. [2023-08-29 20:50:55,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7225 conditions, 1343 events. 746/1343 cut-off events. For 6643/6643 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7394 event pairs, 112 based on Foata normal form. 28/1371 useless extension candidates. Maximal degree in co-relation 7205. Up to 561 conditions per place. [2023-08-29 20:50:55,585 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 48 selfloop transitions, 22 changer transitions 33/103 dead transitions. [2023-08-29 20:50:55,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 1075 flow [2023-08-29 20:50:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:50:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:50:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-29 20:50:55,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48426150121065376 [2023-08-29 20:50:55,588 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-29 20:50:55,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-29 20:50:55,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:55,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-29 20:50:55,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,592 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,592 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 479 flow. Second operand 7 states and 600 transitions. [2023-08-29 20:50:55,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 1075 flow [2023-08-29 20:50:55,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 1057 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-29 20:50:55,613 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 555 flow [2023-08-29 20:50:55,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=555, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-08-29 20:50:55,614 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2023-08-29 20:50:55,614 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 555 flow [2023-08-29 20:50:55,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:55,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:55,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:50:55,615 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:55,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1479075434, now seen corresponding path program 1 times [2023-08-29 20:50:55,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:55,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255089644] [2023-08-29 20:50:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:55,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:55,744 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 20:50:55,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:55,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255089644] [2023-08-29 20:50:55,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255089644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:55,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:55,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:50:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198662662] [2023-08-29 20:50:55,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:55,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:50:55,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:55,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:50:55,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:50:55,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 177 [2023-08-29 20:50:55,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:55,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 177 [2023-08-29 20:50:55,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:55,934 INFO L130 PetriNetUnfolder]: 592/1115 cut-off events. [2023-08-29 20:50:55,934 INFO L131 PetriNetUnfolder]: For 8772/8772 co-relation queries the response was YES. [2023-08-29 20:50:55,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6421 conditions, 1115 events. 592/1115 cut-off events. For 8772/8772 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6051 event pairs, 120 based on Foata normal form. 32/1147 useless extension candidates. Maximal degree in co-relation 6396. Up to 573 conditions per place. [2023-08-29 20:50:55,943 INFO L137 encePairwiseOnDemand]: 168/177 looper letters, 43 selfloop transitions, 21 changer transitions 26/90 dead transitions. [2023-08-29 20:50:55,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 1148 flow [2023-08-29 20:50:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:50:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:50:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-29 20:50:55,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826472962066182 [2023-08-29 20:50:55,946 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-29 20:50:55,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-29 20:50:55,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:55,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-29 20:50:55,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,951 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 555 flow. Second operand 7 states and 598 transitions. [2023-08-29 20:50:55,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 1148 flow [2023-08-29 20:50:55,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 1124 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-29 20:50:55,979 INFO L231 Difference]: Finished difference. Result has 69 places, 43 transitions, 544 flow [2023-08-29 20:50:55,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=69, PETRI_TRANSITIONS=43} [2023-08-29 20:50:55,979 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2023-08-29 20:50:55,980 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 43 transitions, 544 flow [2023-08-29 20:50:55,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:55,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:55,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:55,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:50:55,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:55,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:55,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1989237128, now seen corresponding path program 1 times [2023-08-29 20:50:55,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:55,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250321069] [2023-08-29 20:50:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:55,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:56,110 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 20:50:56,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:56,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250321069] [2023-08-29 20:50:56,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250321069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:56,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:50:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185785516] [2023-08-29 20:50:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:56,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:50:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:50:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:50:56,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 177 [2023-08-29 20:50:56,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 43 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:56,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:56,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 177 [2023-08-29 20:50:56,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:56,240 INFO L130 PetriNetUnfolder]: 246/579 cut-off events. [2023-08-29 20:50:56,240 INFO L131 PetriNetUnfolder]: For 4261/4384 co-relation queries the response was YES. [2023-08-29 20:50:56,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 579 events. 246/579 cut-off events. For 4261/4384 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3603 event pairs, 26 based on Foata normal form. 83/645 useless extension candidates. Maximal degree in co-relation 2968. Up to 368 conditions per place. [2023-08-29 20:50:56,245 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 33 selfloop transitions, 7 changer transitions 45/93 dead transitions. [2023-08-29 20:50:56,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 1294 flow [2023-08-29 20:50:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:50:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:50:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2023-08-29 20:50:56,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2023-08-29 20:50:56,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2023-08-29 20:50:56,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2023-08-29 20:50:56,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:56,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2023-08-29 20:50:56,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:56,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:56,251 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 177.0) internal successors, (1239), 7 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:56,251 INFO L175 Difference]: Start difference. First operand has 69 places, 43 transitions, 544 flow. Second operand 6 states and 540 transitions. [2023-08-29 20:50:56,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 1294 flow [2023-08-29 20:50:56,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 93 transitions, 1201 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-08-29 20:50:56,261 INFO L231 Difference]: Finished difference. Result has 67 places, 34 transitions, 413 flow [2023-08-29 20:50:56,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=413, PETRI_PLACES=67, PETRI_TRANSITIONS=34} [2023-08-29 20:50:56,262 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 32 predicate places. [2023-08-29 20:50:56,262 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 34 transitions, 413 flow [2023-08-29 20:50:56,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:56,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:50:56,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:56,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:50:56,263 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:50:56,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:50:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash 789464471, now seen corresponding path program 1 times [2023-08-29 20:50:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:50:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892141845] [2023-08-29 20:50:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:50:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:50:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:50:56,417 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 20:50:56,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:50:56,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892141845] [2023-08-29 20:50:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892141845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:50:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:50:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:50:56,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158052096] [2023-08-29 20:50:56,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:50:56,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:50:56,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:50:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:50:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:50:56,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 177 [2023-08-29 20:50:56,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 34 transitions, 413 flow. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 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 20:50:56,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:50:56,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 177 [2023-08-29 20:50:56,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:50:56,497 INFO L130 PetriNetUnfolder]: 63/161 cut-off events. [2023-08-29 20:50:56,498 INFO L131 PetriNetUnfolder]: For 1273/1339 co-relation queries the response was YES. [2023-08-29 20:50:56,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 161 events. 63/161 cut-off events. For 1273/1339 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 638 event pairs, 8 based on Foata normal form. 33/188 useless extension candidates. Maximal degree in co-relation 965. Up to 90 conditions per place. [2023-08-29 20:50:56,499 INFO L137 encePairwiseOnDemand]: 171/177 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-08-29 20:50:56,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 53 transitions, 719 flow [2023-08-29 20:50:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:50:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:50:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2023-08-29 20:50:56,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947538337368846 [2023-08-29 20:50:56,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2023-08-29 20:50:56,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2023-08-29 20:50:56,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:50:56,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2023-08-29 20:50:56,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:56,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:56,511 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:50:56,511 INFO L175 Difference]: Start difference. First operand has 67 places, 34 transitions, 413 flow. Second operand 7 states and 613 transitions. [2023-08-29 20:50:56,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 53 transitions, 719 flow [2023-08-29 20:50:56,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 530 flow, removed 19 selfloop flow, removed 14 redundant places. [2023-08-29 20:50:56,515 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-29 20:50:56,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-29 20:50:56,517 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-08-29 20:50:56,517 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-29 20:50:56,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 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 20:50:56,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-29 20:50:56,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-29 20:50:56,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-29 20:50:56,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-29 20:50:56,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-29 20:50:56,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-29 20:50:56,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-29 20:50:56,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-29 20:50:56,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-29 20:50:56,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-29 20:50:56,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-29 20:50:56,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:50:56,525 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:50:56,527 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:50:56,528 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:50:56,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:50:56 BasicIcfg [2023-08-29 20:50:56,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:50:56,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:50:56,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:50:56,532 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:50:56,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:50:49" (3/4) ... [2023-08-29 20:50:56,535 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:50:56,540 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:50:56,541 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:50:56,541 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-29 20:50:56,546 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-29 20:50:56,546 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:50:56,546 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:50:56,546 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:50:56,579 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:50:56,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:50:56,579 INFO L158 Benchmark]: Toolchain (without parser) took 8637.05ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 51.8MB in the beginning and 73.9MB in the end (delta: -22.1MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. [2023-08-29 20:50:56,580 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:50:56,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 508.49ms. Allocated memory is still 75.5MB. Free memory was 51.5MB in the beginning and 31.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-29 20:50:56,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.27ms. Allocated memory is still 75.5MB. Free memory was 31.0MB in the beginning and 54.2MB in the end (delta: -23.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2023-08-29 20:50:56,581 INFO L158 Benchmark]: Boogie Preprocessor took 37.91ms. Allocated memory is still 75.5MB. Free memory was 54.2MB in the beginning and 52.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:50:56,581 INFO L158 Benchmark]: RCFGBuilder took 491.79ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 38.5MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 20:50:56,581 INFO L158 Benchmark]: TraceAbstraction took 7480.88ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 37.8MB in the beginning and 76.0MB in the end (delta: -38.2MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2023-08-29 20:50:56,582 INFO L158 Benchmark]: Witness Printer took 47.25ms. Allocated memory is still 161.5MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:50:56,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 508.49ms. Allocated memory is still 75.5MB. Free memory was 51.5MB in the beginning and 31.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.27ms. Allocated memory is still 75.5MB. Free memory was 31.0MB in the beginning and 54.2MB in the end (delta: -23.2MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.91ms. Allocated memory is still 75.5MB. Free memory was 54.2MB in the beginning and 52.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.79ms. Allocated memory is still 75.5MB. Free memory was 52.8MB in the beginning and 38.5MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7480.88ms. Allocated memory was 75.5MB in the beginning and 161.5MB in the end (delta: 86.0MB). Free memory was 37.8MB in the beginning and 76.0MB in the end (delta: -38.2MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Witness Printer took 47.25ms. Allocated memory is still 161.5MB. Free memory was 76.0MB in the beginning and 73.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 94 PlacesBefore, 35 PlacesAfterwards, 86 TransitionsBefore, 26 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 84 TotalNumberOfCompositions, 2970 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1645, independent: 1563, independent conditional: 0, independent unconditional: 1563, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 840, independent: 809, independent conditional: 0, independent unconditional: 809, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1645, independent: 754, independent conditional: 0, independent unconditional: 754, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 840, unknown conditional: 0, unknown unconditional: 840] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 772]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.3s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 480 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 370 mSDsluCounter, 180 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 121 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 994 IncrementalHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 59 mSDtfsCounter, 994 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=555occurred in iteration=9, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:50:56,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE