./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c --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/weaver/parallel-misc-3.wvr.c -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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --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 23:27:51,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 23:27:51,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 23:27:51,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 23:27:51,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 23:27:51,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 23:27:51,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 23:27:51,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 23:27:51,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 23:27:51,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 23:27:51,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 23:27:51,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 23:27:51,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 23:27:51,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 23:27:51,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 23:27:51,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 23:27:51,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 23:27:51,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 23:27:51,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 23:27:51,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 23:27:51,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 23:27:51,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 23:27:51,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 23:27:51,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 23:27:51,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 23:27:51,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 23:27:51,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 23:27:51,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 23:27:51,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 23:27:51,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 23:27:51,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 23:27:51,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 23:27:51,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 23:27:51,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 23:27:51,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 23:27:51,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 23:27:51,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 23:27:51,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 23:27:51,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 23:27:51,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 23:27:51,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 23:27:51,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 23:27:51,261 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 23:27:51,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 23:27:51,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 23:27:51,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 23:27:51,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 23:27:51,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 23:27:51,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 23:27:51,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 23:27:51,264 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 23:27:51,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 23:27:51,265 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 23:27:51,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 23:27:51,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 23:27:51,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 23:27:51,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 23:27:51,266 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 23:27:51,266 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 23:27:51,267 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 23:27:51,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 23:27:51,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 23:27:51,267 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 23:27:51,267 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 23:27:51,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 23:27:51,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 23:27:51,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 23:27:51,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:27:51,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 23:27:51,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 23:27:51,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 23:27:51,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 23:27:51,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 23:27:51,269 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 23:27:51,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 23:27:51,270 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 23:27:51,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 23:27:51,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 23:27:51,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 23:27:51,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 23:27:51,602 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 23:27:51,603 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 23:27:51,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-08-29 23:27:52,668 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 23:27:52,878 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 23:27:52,879 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-08-29 23:27:52,884 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008bb32c3/4e7a7c45c15842cc96b46e8c6ad9d8a9/FLAGf70e9e17f [2023-08-29 23:27:52,895 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008bb32c3/4e7a7c45c15842cc96b46e8c6ad9d8a9 [2023-08-29 23:27:52,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 23:27:52,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 23:27:52,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 23:27:52,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 23:27:52,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 23:27:52,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:27:52" (1/1) ... [2023-08-29 23:27:52,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f53711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:52, skipping insertion in model container [2023-08-29 23:27:52,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:27:52" (1/1) ... [2023-08-29 23:27:52,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 23:27:52,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:27:53,061 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2023-08-29 23:27:53,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:27:53,072 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 23:27:53,092 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2023-08-29 23:27:53,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:27:53,099 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:27:53,100 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:27:53,105 INFO L208 MainTranslator]: Completed translation [2023-08-29 23:27:53,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53 WrapperNode [2023-08-29 23:27:53,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 23:27:53,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 23:27:53,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 23:27:53,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 23:27:53,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,133 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-08-29 23:27:53,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 23:27:53,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 23:27:53,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 23:27:53,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 23:27:53,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,180 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 23:27:53,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 23:27:53,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 23:27:53,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 23:27:53,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (1/1) ... [2023-08-29 23:27:53,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:27:53,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:27:53,220 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 23:27:53,243 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 23:27:53,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 23:27:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 23:27:53,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 23:27:53,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 23:27:53,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 23:27:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 23:27:53,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 23:27:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 23:27:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 23:27:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 23:27:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 23:27:53,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 23:27:53,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 23:27:53,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 23:27:53,263 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 23:27:53,363 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 23:27:53,365 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 23:27:53,588 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 23:27:53,625 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 23:27:53,626 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 23:27:53,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:27:53 BoogieIcfgContainer [2023-08-29 23:27:53,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 23:27:53,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 23:27:53,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 23:27:53,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 23:27:53,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:27:52" (1/3) ... [2023-08-29 23:27:53,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62afc575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:27:53, skipping insertion in model container [2023-08-29 23:27:53,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:27:53" (2/3) ... [2023-08-29 23:27:53,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62afc575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:27:53, skipping insertion in model container [2023-08-29 23:27:53,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:27:53" (3/3) ... [2023-08-29 23:27:53,634 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-08-29 23:27:53,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 23:27:53,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 23:27:53,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 23:27:53,762 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 23:27:53,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 104 transitions, 224 flow [2023-08-29 23:27:53,865 INFO L130 PetriNetUnfolder]: 11/102 cut-off events. [2023-08-29 23:27:53,865 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 23:27:53,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 11/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-08-29 23:27:53,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 104 transitions, 224 flow [2023-08-29 23:27:53,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 98 transitions, 208 flow [2023-08-29 23:27:53,879 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 23:27:53,891 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 98 transitions, 208 flow [2023-08-29 23:27:53,894 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 98 transitions, 208 flow [2023-08-29 23:27:53,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 208 flow [2023-08-29 23:27:53,927 INFO L130 PetriNetUnfolder]: 11/98 cut-off events. [2023-08-29 23:27:53,928 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 23:27:53,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 11/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 130 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-08-29 23:27:53,930 INFO L119 LiptonReduction]: Number of co-enabled transitions 1476 [2023-08-29 23:27:57,003 INFO L134 LiptonReduction]: Checked pairs total: 1479 [2023-08-29 23:27:57,004 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-29 23:27:57,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 23:27:57,019 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;@1e6e0c50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 23:27:57,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 23:27:57,021 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 23:27:57,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:27:57,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:27:57,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 23:27:57,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:27:57,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:27:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash 430, now seen corresponding path program 1 times [2023-08-29 23:27:57,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:27:57,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742861097] [2023-08-29 23:27:57,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:57,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:27:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:27:57,106 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 23:27:57,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:27:57,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742861097] [2023-08-29 23:27:57,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742861097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:27:57,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:27:57,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 23:27:57,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909750653] [2023-08-29 23:27:57,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:27:57,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 23:27:57,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:27:57,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 23:27:57,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 23:27:57,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 205 [2023-08-29 23:27:57,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:27:57,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 205 [2023-08-29 23:27:57,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:27:57,186 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2023-08-29 23:27:57,186 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 23:27:57,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 80 events. 45/80 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 159 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 124. Up to 81 conditions per place. [2023-08-29 23:27:57,188 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-29 23:27:57,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 88 flow [2023-08-29 23:27:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 23:27:57,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 23:27:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 210 transitions. [2023-08-29 23:27:57,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2023-08-29 23:27:57,200 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 210 transitions. [2023-08-29 23:27:57,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 210 transitions. [2023-08-29 23:27:57,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:27:57,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 210 transitions. [2023-08-29 23:27:57,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,210 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,211 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 56 flow. Second operand 2 states and 210 transitions. [2023-08-29 23:27:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 88 flow [2023-08-29 23:27:57,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 23:27:57,215 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2023-08-29 23:27:57,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, 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=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2023-08-29 23:27:57,219 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-29 23:27:57,219 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2023-08-29 23:27:57,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:27:57,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:27:57,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 23:27:57,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:27:57,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:27:57,221 INFO L85 PathProgramCache]: Analyzing trace with hash 421854, now seen corresponding path program 1 times [2023-08-29 23:27:57,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:27:57,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522264626] [2023-08-29 23:27:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:57,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:27:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:27:57,373 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 23:27:57,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:27:57,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522264626] [2023-08-29 23:27:57,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522264626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:27:57,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:27:57,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:27:57,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364628558] [2023-08-29 23:27:57,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:27:57,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:27:57,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:27:57,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:27:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:27:57,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-29 23:27:57,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:27:57,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-29 23:27:57,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:27:57,440 INFO L130 PetriNetUnfolder]: 41/72 cut-off events. [2023-08-29 23:27:57,441 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 23:27:57,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 72 events. 41/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 147. Up to 72 conditions per place. [2023-08-29 23:27:57,442 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-29 23:27:57,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 72 flow [2023-08-29 23:27:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:27:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:27:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-08-29 23:27:57,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504065040650405 [2023-08-29 23:27:57,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-08-29 23:27:57,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-08-29 23:27:57,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:27:57,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-08-29 23:27:57,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,449 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 3 states and 286 transitions. [2023-08-29 23:27:57,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 72 flow [2023-08-29 23:27:57,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 23:27:57,450 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 40 flow [2023-08-29 23:27:57,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-08-29 23:27:57,451 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-29 23:27:57,452 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 40 flow [2023-08-29 23:27:57,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:27:57,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:27:57,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 23:27:57,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:27:57,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:27:57,453 INFO L85 PathProgramCache]: Analyzing trace with hash 421855, now seen corresponding path program 1 times [2023-08-29 23:27:57,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:27:57,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442763523] [2023-08-29 23:27:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:57,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:27:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:27:57,498 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 23:27:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:27:57,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442763523] [2023-08-29 23:27:57,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442763523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:27:57,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:27:57,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:27:57,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060857560] [2023-08-29 23:27:57,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:27:57,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:27:57,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:27:57,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:27:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:27:57,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-08-29 23:27:57,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:27:57,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-08-29 23:27:57,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:27:57,559 INFO L130 PetriNetUnfolder]: 37/64 cut-off events. [2023-08-29 23:27:57,559 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 23:27:57,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 64 events. 37/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-08-29 23:27:57,560 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-29 23:27:57,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 66 flow [2023-08-29 23:27:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:27:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:27:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-29 23:27:57,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227642276422763 [2023-08-29 23:27:57,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-29 23:27:57,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-29 23:27:57,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:27:57,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-29 23:27:57,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,566 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 40 flow. Second operand 3 states and 272 transitions. [2023-08-29 23:27:57,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 66 flow [2023-08-29 23:27:57,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:27:57,567 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 37 flow [2023-08-29 23:27:57,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-08-29 23:27:57,568 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-29 23:27:57,568 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 37 flow [2023-08-29 23:27:57,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:27:57,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:27:57,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 23:27:57,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:27:57,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:27:57,569 INFO L85 PathProgramCache]: Analyzing trace with hash 405413125, now seen corresponding path program 1 times [2023-08-29 23:27:57,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:27:57,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122957806] [2023-08-29 23:27:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:57,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:27:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:27:57,677 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 23:27:57,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:27:57,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122957806] [2023-08-29 23:27:57,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122957806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:27:57,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:27:57,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 23:27:57,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903732932] [2023-08-29 23:27:57,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:27:57,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:27:57,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:27:57,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:27:57,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 23:27:57,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 205 [2023-08-29 23:27:57,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:27:57,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 205 [2023-08-29 23:27:57,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:27:57,763 INFO L130 PetriNetUnfolder]: 29/52 cut-off events. [2023-08-29 23:27:57,764 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 23:27:57,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 52 events. 29/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 109. Up to 52 conditions per place. [2023-08-29 23:27:57,766 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-29 23:27:57,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 63 flow [2023-08-29 23:27:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:27:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:27:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-08-29 23:27:57,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195121951219512 [2023-08-29 23:27:57,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-08-29 23:27:57,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-08-29 23:27:57,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:27:57,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-08-29 23:27:57,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,771 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,771 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 37 flow. Second operand 3 states and 258 transitions. [2023-08-29 23:27:57,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 63 flow [2023-08-29 23:27:57,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:27:57,772 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-29 23:27:57,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-29 23:27:57,773 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-29 23:27:57,773 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-29 23:27:57,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:27:57,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:27:57,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 23:27:57,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:27:57,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:27:57,775 INFO L85 PathProgramCache]: Analyzing trace with hash 405413126, now seen corresponding path program 1 times [2023-08-29 23:27:57,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:27:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405026614] [2023-08-29 23:27:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:27:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:27:57,905 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 23:27:57,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:27:57,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405026614] [2023-08-29 23:27:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405026614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:27:57,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:27:57,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 23:27:57,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637565690] [2023-08-29 23:27:57,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:27:57,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:27:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:27:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:27:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 23:27:57,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-08-29 23:27:57,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:27:57,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-08-29 23:27:57,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:27:57,974 INFO L130 PetriNetUnfolder]: 21/40 cut-off events. [2023-08-29 23:27:57,974 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 23:27:57,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 40 events. 21/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 86. Up to 40 conditions per place. [2023-08-29 23:27:57,975 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-08-29 23:27:57,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 60 flow [2023-08-29 23:27:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:27:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:27:57,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-29 23:27:57,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2023-08-29 23:27:57,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-29 23:27:57,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-29 23:27:57,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:27:57,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-29 23:27:57,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,986 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 3 states and 275 transitions. [2023-08-29 23:27:57,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 60 flow [2023-08-29 23:27:57,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:27:57,987 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 35 flow [2023-08-29 23:27:57,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-29 23:27:57,989 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-29 23:27:57,990 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 35 flow [2023-08-29 23:27:57,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:57,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:27:57,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:27:57,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 23:27:57,991 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:27:57,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:27:57,991 INFO L85 PathProgramCache]: Analyzing trace with hash -883757984, now seen corresponding path program 1 times [2023-08-29 23:27:57,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:27:57,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065258280] [2023-08-29 23:27:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:57,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:27:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:27:58,076 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 23:27:58,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:27:58,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065258280] [2023-08-29 23:27:58,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065258280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:27:58,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:27:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 23:27:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358575511] [2023-08-29 23:27:58,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:27:58,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:27:58,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:27:58,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:27:58,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:27:58,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 205 [2023-08-29 23:27:58,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:27:58,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 205 [2023-08-29 23:27:58,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:27:58,118 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2023-08-29 23:27:58,118 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:27:58,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 54 events. 29/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 116. Up to 45 conditions per place. [2023-08-29 23:27:58,119 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-08-29 23:27:58,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 86 flow [2023-08-29 23:27:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:27:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:27:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-29 23:27:58,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2023-08-29 23:27:58,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-29 23:27:58,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-29 23:27:58,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:27:58,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-29 23:27:58,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,123 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 35 flow. Second operand 3 states and 290 transitions. [2023-08-29 23:27:58,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 86 flow [2023-08-29 23:27:58,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 85 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:27:58,124 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 46 flow [2023-08-29 23:27:58,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-08-29 23:27:58,125 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -5 predicate places. [2023-08-29 23:27:58,125 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 46 flow [2023-08-29 23:27:58,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:27:58,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:27:58,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 23:27:58,126 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:27:58,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:27:58,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1529812726, now seen corresponding path program 1 times [2023-08-29 23:27:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:27:58,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757546727] [2023-08-29 23:27:58,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:58,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:27:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:27:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:27:58,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:27:58,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757546727] [2023-08-29 23:27:58,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757546727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:27:58,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:27:58,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 23:27:58,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056009081] [2023-08-29 23:27:58,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:27:58,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:27:58,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:27:58,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:27:58,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:27:58,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 205 [2023-08-29 23:27:58,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:27:58,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 205 [2023-08-29 23:27:58,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:27:58,212 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-08-29 23:27:58,212 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-29 23:27:58,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 73 events. 40/73 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 187. Up to 49 conditions per place. [2023-08-29 23:27:58,214 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-29 23:27:58,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 110 flow [2023-08-29 23:27:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:27:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:27:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-29 23:27:58,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2023-08-29 23:27:58,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-29 23:27:58,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-29 23:27:58,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:27:58,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-29 23:27:58,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,221 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 46 flow. Second operand 3 states and 290 transitions. [2023-08-29 23:27:58,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 110 flow [2023-08-29 23:27:58,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:27:58,222 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 56 flow [2023-08-29 23:27:58,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2023-08-29 23:27:58,223 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2023-08-29 23:27:58,223 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 56 flow [2023-08-29 23:27:58,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:58,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:27:58,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:27:58,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 23:27:58,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:27:58,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:27:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash -605431645, now seen corresponding path program 1 times [2023-08-29 23:27:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:27:58,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495116155] [2023-08-29 23:27:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:58,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:27:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:27:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:27:58,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:27:58,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495116155] [2023-08-29 23:27:58,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495116155] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:27:58,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534423158] [2023-08-29 23:27:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:58,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:27:58,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:27:58,424 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:27:58,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 23:27:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:27:58,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 23:27:58,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:27:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:27:58,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:27:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:27:59,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534423158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:27:59,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:27:59,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-08-29 23:27:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962971132] [2023-08-29 23:27:59,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:27:59,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 23:27:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:27:59,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 23:27:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-29 23:27:59,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 205 [2023-08-29 23:27:59,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 56 flow. Second operand has 10 states, 10 states have (on average 75.5) internal successors, (755), 10 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:59,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:27:59,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 205 [2023-08-29 23:27:59,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:27:59,341 INFO L130 PetriNetUnfolder]: 75/134 cut-off events. [2023-08-29 23:27:59,341 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-29 23:27:59,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 134 events. 75/134 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 381. Up to 53 conditions per place. [2023-08-29 23:27:59,343 INFO L137 encePairwiseOnDemand]: 200/205 looper letters, 44 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2023-08-29 23:27:59,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 353 flow [2023-08-29 23:27:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 23:27:59,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 23:27:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1155 transitions. [2023-08-29 23:27:59,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375609756097561 [2023-08-29 23:27:59,347 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1155 transitions. [2023-08-29 23:27:59,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1155 transitions. [2023-08-29 23:27:59,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:27:59,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1155 transitions. [2023-08-29 23:27:59,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.0) internal successors, (1155), 15 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:59,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 205.0) internal successors, (3280), 16 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:59,354 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 205.0) internal successors, (3280), 16 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:59,354 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 56 flow. Second operand 15 states and 1155 transitions. [2023-08-29 23:27:59,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 353 flow [2023-08-29 23:27:59,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 67 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:27:59,356 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 235 flow [2023-08-29 23:27:59,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=235, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-29 23:27:59,357 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-29 23:27:59,357 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 235 flow [2023-08-29 23:27:59,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.5) internal successors, (755), 10 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:27:59,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:27:59,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:27:59,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 23:27:59,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:27:59,576 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:27:59,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:27:59,576 INFO L85 PathProgramCache]: Analyzing trace with hash 222277116, now seen corresponding path program 2 times [2023-08-29 23:27:59,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:27:59,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822799277] [2023-08-29 23:27:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:27:59,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:27:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:28:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:00,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:28:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822799277] [2023-08-29 23:28:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822799277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:28:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600973529] [2023-08-29 23:28:00,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:28:00,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:00,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:28:00,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:28:00,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 23:28:00,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:28:00,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:28:00,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-29 23:28:00,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:28:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:00,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:28:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:01,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600973529] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:28:01,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:28:01,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-29 23:28:01,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224169093] [2023-08-29 23:28:01,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:28:01,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-29 23:28:01,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:28:01,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-29 23:28:01,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-08-29 23:28:01,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-08-29 23:28:01,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 235 flow. Second operand has 17 states, 17 states have (on average 69.29411764705883) internal successors, (1178), 17 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:01,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:28:01,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-08-29 23:28:01,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:28:02,335 INFO L130 PetriNetUnfolder]: 255/462 cut-off events. [2023-08-29 23:28:02,336 INFO L131 PetriNetUnfolder]: For 1074/1074 co-relation queries the response was YES. [2023-08-29 23:28:02,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 462 events. 255/462 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1890 event pairs, 0 based on Foata normal form. 12/438 useless extension candidates. Maximal degree in co-relation 1980. Up to 179 conditions per place. [2023-08-29 23:28:02,340 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 68 selfloop transitions, 82 changer transitions 33/183 dead transitions. [2023-08-29 23:28:02,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 183 transitions, 1499 flow [2023-08-29 23:28:02,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-29 23:28:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-29 23:28:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1614 transitions. [2023-08-29 23:28:02,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3578713968957871 [2023-08-29 23:28:02,345 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1614 transitions. [2023-08-29 23:28:02,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1614 transitions. [2023-08-29 23:28:02,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:28:02,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1614 transitions. [2023-08-29 23:28:02,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 73.36363636363636) internal successors, (1614), 22 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:02,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 205.0) internal successors, (4715), 23 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:02,355 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 205.0) internal successors, (4715), 23 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:02,355 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 235 flow. Second operand 22 states and 1614 transitions. [2023-08-29 23:28:02,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 183 transitions, 1499 flow [2023-08-29 23:28:02,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 183 transitions, 1295 flow, removed 93 selfloop flow, removed 3 redundant places. [2023-08-29 23:28:02,365 INFO L231 Difference]: Finished difference. Result has 68 places, 104 transitions, 914 flow [2023-08-29 23:28:02,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=914, PETRI_PLACES=68, PETRI_TRANSITIONS=104} [2023-08-29 23:28:02,365 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 41 predicate places. [2023-08-29 23:28:02,365 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 104 transitions, 914 flow [2023-08-29 23:28:02,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 69.29411764705883) internal successors, (1178), 17 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:02,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:28:02,366 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:28:02,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 23:28:02,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-29 23:28:02,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:28:02,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:28:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1421857516, now seen corresponding path program 3 times [2023-08-29 23:28:02,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:28:02,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811473964] [2023-08-29 23:28:02,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:28:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:28:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:28:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:03,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:28:03,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811473964] [2023-08-29 23:28:03,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811473964] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:28:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166791260] [2023-08-29 23:28:03,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 23:28:03,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:03,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:28:03,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:28:03,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 23:28:03,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-29 23:28:03,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:28:03,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-29 23:28:03,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:28:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:03,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:28:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:28:04,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166791260] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:28:04,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:28:04,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 16 [2023-08-29 23:28:04,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046589741] [2023-08-29 23:28:04,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:28:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 23:28:04,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:28:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 23:28:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-08-29 23:28:04,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-08-29 23:28:04,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 104 transitions, 914 flow. Second operand has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:04,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:28:04,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-08-29 23:28:04,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:28:05,207 INFO L130 PetriNetUnfolder]: 546/935 cut-off events. [2023-08-29 23:28:05,208 INFO L131 PetriNetUnfolder]: For 2954/2954 co-relation queries the response was YES. [2023-08-29 23:28:05,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 935 events. 546/935 cut-off events. For 2954/2954 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4398 event pairs, 0 based on Foata normal form. 14/901 useless extension candidates. Maximal degree in co-relation 4680. Up to 325 conditions per place. [2023-08-29 23:28:05,216 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 95 selfloop transitions, 198 changer transitions 32/325 dead transitions. [2023-08-29 23:28:05,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 325 transitions, 3545 flow [2023-08-29 23:28:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-29 23:28:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-29 23:28:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1662 transitions. [2023-08-29 23:28:05,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35249204665959705 [2023-08-29 23:28:05,221 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1662 transitions. [2023-08-29 23:28:05,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1662 transitions. [2023-08-29 23:28:05,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:28:05,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1662 transitions. [2023-08-29 23:28:05,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 72.26086956521739) internal successors, (1662), 23 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:05,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 205.0) internal successors, (4920), 24 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:05,232 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 205.0) internal successors, (4920), 24 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:05,232 INFO L175 Difference]: Start difference. First operand has 68 places, 104 transitions, 914 flow. Second operand 23 states and 1662 transitions. [2023-08-29 23:28:05,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 325 transitions, 3545 flow [2023-08-29 23:28:05,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 325 transitions, 2529 flow, removed 500 selfloop flow, removed 4 redundant places. [2023-08-29 23:28:05,258 INFO L231 Difference]: Finished difference. Result has 94 places, 240 transitions, 2201 flow [2023-08-29 23:28:05,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2201, PETRI_PLACES=94, PETRI_TRANSITIONS=240} [2023-08-29 23:28:05,259 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 67 predicate places. [2023-08-29 23:28:05,259 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 240 transitions, 2201 flow [2023-08-29 23:28:05,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:05,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:28:05,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:28:05,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 23:28:05,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:05,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:28:05,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:28:05,472 INFO L85 PathProgramCache]: Analyzing trace with hash 953327124, now seen corresponding path program 4 times [2023-08-29 23:28:05,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:28:05,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574142807] [2023-08-29 23:28:05,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:28:05,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:28:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:28:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:28:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574142807] [2023-08-29 23:28:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574142807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:28:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223128676] [2023-08-29 23:28:06,023 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 23:28:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:28:06,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:28:06,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 23:28:06,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 23:28:06,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:28:06,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-29 23:28:06,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:28:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:06,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:28:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223128676] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:28:06,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:28:06,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-29 23:28:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139939610] [2023-08-29 23:28:06,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:28:06,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 23:28:06,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:28:06,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 23:28:06,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-08-29 23:28:07,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 205 [2023-08-29 23:28:07,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 240 transitions, 2201 flow. Second operand has 18 states, 18 states have (on average 70.22222222222223) internal successors, (1264), 18 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:07,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:28:07,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 205 [2023-08-29 23:28:07,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:28:08,927 INFO L130 PetriNetUnfolder]: 1013/1690 cut-off events. [2023-08-29 23:28:08,927 INFO L131 PetriNetUnfolder]: For 2794/2794 co-relation queries the response was YES. [2023-08-29 23:28:08,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8287 conditions, 1690 events. 1013/1690 cut-off events. For 2794/2794 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8775 event pairs, 4 based on Foata normal form. 49/1739 useless extension candidates. Maximal degree in co-relation 8262. Up to 409 conditions per place. [2023-08-29 23:28:08,941 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 121 selfloop transitions, 414 changer transitions 38/573 dead transitions. [2023-08-29 23:28:08,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 573 transitions, 6044 flow [2023-08-29 23:28:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-29 23:28:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-29 23:28:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2622 transitions. [2023-08-29 23:28:08,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35528455284552846 [2023-08-29 23:28:08,949 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2622 transitions. [2023-08-29 23:28:08,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2622 transitions. [2023-08-29 23:28:08,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:28:08,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2622 transitions. [2023-08-29 23:28:08,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 72.83333333333333) internal successors, (2622), 36 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:08,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 205.0) internal successors, (7585), 37 states have internal predecessors, (7585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:08,965 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 205.0) internal successors, (7585), 37 states have internal predecessors, (7585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:08,965 INFO L175 Difference]: Start difference. First operand has 94 places, 240 transitions, 2201 flow. Second operand 36 states and 2622 transitions. [2023-08-29 23:28:08,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 573 transitions, 6044 flow [2023-08-29 23:28:09,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 573 transitions, 5700 flow, removed 166 selfloop flow, removed 4 redundant places. [2023-08-29 23:28:09,013 INFO L231 Difference]: Finished difference. Result has 137 places, 483 transitions, 5623 flow [2023-08-29 23:28:09,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5623, PETRI_PLACES=137, PETRI_TRANSITIONS=483} [2023-08-29 23:28:09,014 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 110 predicate places. [2023-08-29 23:28:09,014 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 483 transitions, 5623 flow [2023-08-29 23:28:09,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.22222222222223) internal successors, (1264), 18 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:09,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:28:09,015 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:28:09,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 23:28:09,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:09,220 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:28:09,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:28:09,221 INFO L85 PathProgramCache]: Analyzing trace with hash 609636454, now seen corresponding path program 5 times [2023-08-29 23:28:09,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:28:09,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049247341] [2023-08-29 23:28:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:28:09,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:28:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:28:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:09,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:28:09,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049247341] [2023-08-29 23:28:09,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049247341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:28:09,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645700624] [2023-08-29 23:28:09,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 23:28:09,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:09,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:28:09,719 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:28:09,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 23:28:09,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:28:09,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:28:09,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-29 23:28:09,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:28:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:09,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:28:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:28:10,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645700624] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:28:10,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:28:10,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 16 [2023-08-29 23:28:10,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503230328] [2023-08-29 23:28:10,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:28:10,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-29 23:28:10,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:28:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-29 23:28:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-08-29 23:28:10,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-08-29 23:28:10,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 483 transitions, 5623 flow. Second operand has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:10,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:28:10,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-08-29 23:28:10,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:28:11,856 INFO L130 PetriNetUnfolder]: 1459/2409 cut-off events. [2023-08-29 23:28:11,857 INFO L131 PetriNetUnfolder]: For 5100/5100 co-relation queries the response was YES. [2023-08-29 23:28:11,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14274 conditions, 2409 events. 1459/2409 cut-off events. For 5100/5100 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13200 event pairs, 21 based on Foata normal form. 10/2419 useless extension candidates. Maximal degree in co-relation 14235. Up to 639 conditions per place. [2023-08-29 23:28:11,882 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 230 selfloop transitions, 523 changer transitions 85/838 dead transitions. [2023-08-29 23:28:11,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 838 transitions, 11093 flow [2023-08-29 23:28:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-29 23:28:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-29 23:28:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1731 transitions. [2023-08-29 23:28:11,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3518292682926829 [2023-08-29 23:28:11,887 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1731 transitions. [2023-08-29 23:28:11,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1731 transitions. [2023-08-29 23:28:11,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:28:11,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1731 transitions. [2023-08-29 23:28:11,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 72.125) internal successors, (1731), 24 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:11,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:11,898 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:11,898 INFO L175 Difference]: Start difference. First operand has 137 places, 483 transitions, 5623 flow. Second operand 24 states and 1731 transitions. [2023-08-29 23:28:11,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 838 transitions, 11093 flow [2023-08-29 23:28:12,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 838 transitions, 10377 flow, removed 276 selfloop flow, removed 11 redundant places. [2023-08-29 23:28:12,038 INFO L231 Difference]: Finished difference. Result has 155 places, 701 transitions, 9679 flow [2023-08-29 23:28:12,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=5161, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9679, PETRI_PLACES=155, PETRI_TRANSITIONS=701} [2023-08-29 23:28:12,040 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 128 predicate places. [2023-08-29 23:28:12,040 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 701 transitions, 9679 flow [2023-08-29 23:28:12,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:12,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:28:12,041 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:28:12,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 23:28:12,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-29 23:28:12,246 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:28:12,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:28:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash -754462680, now seen corresponding path program 6 times [2023-08-29 23:28:12,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:28:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065028979] [2023-08-29 23:28:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:28:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:28:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:28:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 23:28:12,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:28:12,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065028979] [2023-08-29 23:28:12,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065028979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:28:12,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891433581] [2023-08-29 23:28:12,590 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 23:28:12,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:12,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:28:12,591 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:28:12,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 23:28:12,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-29 23:28:12,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:28:12,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 23:28:12,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:28:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:28:12,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:28:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-29 23:28:13,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891433581] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:28:13,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:28:13,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 12 [2023-08-29 23:28:13,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8773477] [2023-08-29 23:28:13,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:28:13,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 23:28:13,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:28:13,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 23:28:13,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-29 23:28:13,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 205 [2023-08-29 23:28:13,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 701 transitions, 9679 flow. Second operand has 13 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:13,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:28:13,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 205 [2023-08-29 23:28:13,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:28:13,610 INFO L130 PetriNetUnfolder]: 1187/2006 cut-off events. [2023-08-29 23:28:13,610 INFO L131 PetriNetUnfolder]: For 6237/6237 co-relation queries the response was YES. [2023-08-29 23:28:13,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13022 conditions, 2006 events. 1187/2006 cut-off events. For 6237/6237 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10957 event pairs, 42 based on Foata normal form. 154/2160 useless extension candidates. Maximal degree in co-relation 12979. Up to 719 conditions per place. [2023-08-29 23:28:13,631 INFO L137 encePairwiseOnDemand]: 201/205 looper letters, 293 selfloop transitions, 373 changer transitions 3/669 dead transitions. [2023-08-29 23:28:13,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 669 transitions, 10242 flow [2023-08-29 23:28:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:28:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:28:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 730 transitions. [2023-08-29 23:28:13,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2023-08-29 23:28:13,634 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 730 transitions. [2023-08-29 23:28:13,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 730 transitions. [2023-08-29 23:28:13,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:28:13,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 730 transitions. [2023-08-29 23:28:13,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:13,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:13,638 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:13,638 INFO L175 Difference]: Start difference. First operand has 155 places, 701 transitions, 9679 flow. Second operand 9 states and 730 transitions. [2023-08-29 23:28:13,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 669 transitions, 10242 flow [2023-08-29 23:28:13,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 669 transitions, 9771 flow, removed 90 selfloop flow, removed 7 redundant places. [2023-08-29 23:28:13,821 INFO L231 Difference]: Finished difference. Result has 154 places, 642 transitions, 8912 flow [2023-08-29 23:28:13,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=8055, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8912, PETRI_PLACES=154, PETRI_TRANSITIONS=642} [2023-08-29 23:28:13,822 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 127 predicate places. [2023-08-29 23:28:13,823 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 642 transitions, 8912 flow [2023-08-29 23:28:13,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:13,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:28:13,823 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:28:13,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 23:28:14,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:14,029 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:28:14,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:28:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1390838903, now seen corresponding path program 7 times [2023-08-29 23:28:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:28:14,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268264811] [2023-08-29 23:28:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:28:14,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:28:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:28:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:28:14,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:28:14,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268264811] [2023-08-29 23:28:14,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268264811] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:28:14,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699507713] [2023-08-29 23:28:14,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 23:28:14,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:14,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:28:14,357 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:28:14,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 23:28:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:28:14,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 23:28:14,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:28:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:28:14,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:28:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:28:14,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699507713] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:28:14,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:28:14,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-08-29 23:28:14,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391328840] [2023-08-29 23:28:14,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:28:14,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-29 23:28:14,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:28:14,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-29 23:28:14,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-29 23:28:14,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 205 [2023-08-29 23:28:14,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 642 transitions, 8912 flow. Second operand has 15 states, 15 states have (on average 75.66666666666667) internal successors, (1135), 15 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:14,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:28:14,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 205 [2023-08-29 23:28:14,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:28:15,322 INFO L130 PetriNetUnfolder]: 949/1616 cut-off events. [2023-08-29 23:28:15,322 INFO L131 PetriNetUnfolder]: For 4475/4475 co-relation queries the response was YES. [2023-08-29 23:28:15,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10520 conditions, 1616 events. 949/1616 cut-off events. For 4475/4475 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8356 event pairs, 4 based on Foata normal form. 196/1810 useless extension candidates. Maximal degree in co-relation 10483. Up to 575 conditions per place. [2023-08-29 23:28:15,335 INFO L137 encePairwiseOnDemand]: 200/205 looper letters, 288 selfloop transitions, 226 changer transitions 46/560 dead transitions. [2023-08-29 23:28:15,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 560 transitions, 8592 flow [2023-08-29 23:28:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 23:28:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 23:28:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 622 transitions. [2023-08-29 23:28:15,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37926829268292683 [2023-08-29 23:28:15,337 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 622 transitions. [2023-08-29 23:28:15,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 622 transitions. [2023-08-29 23:28:15,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:28:15,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 622 transitions. [2023-08-29 23:28:15,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:15,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:15,341 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:15,341 INFO L175 Difference]: Start difference. First operand has 154 places, 642 transitions, 8912 flow. Second operand 8 states and 622 transitions. [2023-08-29 23:28:15,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 560 transitions, 8592 flow [2023-08-29 23:28:15,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 560 transitions, 8177 flow, removed 66 selfloop flow, removed 9 redundant places. [2023-08-29 23:28:15,427 INFO L231 Difference]: Finished difference. Result has 149 places, 473 transitions, 6695 flow [2023-08-29 23:28:15,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6451, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6695, PETRI_PLACES=149, PETRI_TRANSITIONS=473} [2023-08-29 23:28:15,428 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 122 predicate places. [2023-08-29 23:28:15,428 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 473 transitions, 6695 flow [2023-08-29 23:28:15,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 75.66666666666667) internal successors, (1135), 15 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:15,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:28:15,429 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:28:15,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 23:28:15,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:15,634 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 23:28:15,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:28:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1578425142, now seen corresponding path program 8 times [2023-08-29 23:28:15,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:28:15,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056337828] [2023-08-29 23:28:15,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:28:15,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:28:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:28:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:16,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:28:16,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056337828] [2023-08-29 23:28:16,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056337828] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:28:16,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745365753] [2023-08-29 23:28:16,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:28:16,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:28:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:28:16,518 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 23:28:16,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 23:28:16,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:28:16,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:28:16,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-29 23:28:16,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:28:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:28:16,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:28:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:28:17,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745365753] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:28:17,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:28:17,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2023-08-29 23:28:17,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996686598] [2023-08-29 23:28:17,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:28:17,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-29 23:28:17,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:28:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-29 23:28:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-08-29 23:28:17,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-08-29 23:28:17,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 473 transitions, 6695 flow. Second operand has 22 states, 22 states have (on average 68.95454545454545) internal successors, (1517), 22 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:17,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:28:17,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-08-29 23:28:17,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:28:18,246 INFO L130 PetriNetUnfolder]: 831/1394 cut-off events. [2023-08-29 23:28:18,246 INFO L131 PetriNetUnfolder]: For 3643/3643 co-relation queries the response was YES. [2023-08-29 23:28:18,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9523 conditions, 1394 events. 831/1394 cut-off events. For 3643/3643 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6783 event pairs, 12 based on Foata normal form. 6/1400 useless extension candidates. Maximal degree in co-relation 9489. Up to 527 conditions per place. [2023-08-29 23:28:18,253 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 0 selfloop transitions, 0 changer transitions 531/531 dead transitions. [2023-08-29 23:28:18,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 531 transitions, 8291 flow [2023-08-29 23:28:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 23:28:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 23:28:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1202 transitions. [2023-08-29 23:28:18,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3449067431850789 [2023-08-29 23:28:18,256 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1202 transitions. [2023-08-29 23:28:18,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1202 transitions. [2023-08-29 23:28:18,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:28:18,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1202 transitions. [2023-08-29 23:28:18,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.70588235294117) internal successors, (1202), 17 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:18,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 205.0) internal successors, (3690), 18 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:18,263 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 205.0) internal successors, (3690), 18 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:18,263 INFO L175 Difference]: Start difference. First operand has 149 places, 473 transitions, 6695 flow. Second operand 17 states and 1202 transitions. [2023-08-29 23:28:18,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 531 transitions, 8291 flow [2023-08-29 23:28:18,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 531 transitions, 8033 flow, removed 46 selfloop flow, removed 8 redundant places. [2023-08-29 23:28:18,330 INFO L231 Difference]: Finished difference. Result has 151 places, 0 transitions, 0 flow [2023-08-29 23:28:18,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=151, PETRI_TRANSITIONS=0} [2023-08-29 23:28:18,331 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 124 predicate places. [2023-08-29 23:28:18,331 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 0 transitions, 0 flow [2023-08-29 23:28:18,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 68.95454545454545) internal successors, (1517), 22 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:28:18,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-29 23:28:18,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-29 23:28:18,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-29 23:28:18,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-29 23:28:18,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-29 23:28:18,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-29 23:28:18,335 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-29 23:28:18,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-29 23:28:18,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-29 23:28:18,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-29 23:28:18,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-29 23:28:18,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-29 23:28:18,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 23:28:18,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-29 23:28:18,543 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:28:18,545 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 23:28:18,545 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 23:28:18,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:28:18 BasicIcfg [2023-08-29 23:28:18,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 23:28:18,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 23:28:18,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 23:28:18,548 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 23:28:18,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:27:53" (3/4) ... [2023-08-29 23:28:18,551 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 23:28:18,554 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 23:28:18,554 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 23:28:18,557 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-29 23:28:18,557 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 23:28:18,557 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 23:28:18,557 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 23:28:18,579 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 23:28:18,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 23:28:18,579 INFO L158 Benchmark]: Toolchain (without parser) took 25682.20ms. Allocated memory was 92.3MB in the beginning and 432.0MB in the end (delta: 339.7MB). Free memory was 70.1MB in the beginning and 358.4MB in the end (delta: -288.3MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2023-08-29 23:28:18,580 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 65.0MB. Free memory is still 43.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 23:28:18,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.96ms. Allocated memory is still 92.3MB. Free memory was 70.1MB in the beginning and 59.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 23:28:18,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.07ms. Allocated memory is still 92.3MB. Free memory was 59.1MB in the beginning and 57.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 23:28:18,580 INFO L158 Benchmark]: Boogie Preprocessor took 55.02ms. Allocated memory is still 92.3MB. Free memory was 57.5MB in the beginning and 56.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 23:28:18,581 INFO L158 Benchmark]: RCFGBuilder took 437.74ms. Allocated memory is still 92.3MB. Free memory was 56.0MB in the beginning and 68.5MB in the end (delta: -12.4MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2023-08-29 23:28:18,581 INFO L158 Benchmark]: TraceAbstraction took 24918.10ms. Allocated memory was 92.3MB in the beginning and 432.0MB in the end (delta: 339.7MB). Free memory was 67.9MB in the beginning and 361.6MB in the end (delta: -293.7MB). Peak memory consumption was 271.0MB. Max. memory is 16.1GB. [2023-08-29 23:28:18,581 INFO L158 Benchmark]: Witness Printer took 31.23ms. Allocated memory is still 432.0MB. Free memory was 361.6MB in the beginning and 358.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 23:28:18,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 65.0MB. Free memory is still 43.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.96ms. Allocated memory is still 92.3MB. Free memory was 70.1MB in the beginning and 59.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.07ms. Allocated memory is still 92.3MB. Free memory was 59.1MB in the beginning and 57.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.02ms. Allocated memory is still 92.3MB. Free memory was 57.5MB in the beginning and 56.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 437.74ms. Allocated memory is still 92.3MB. Free memory was 56.0MB in the beginning and 68.5MB in the end (delta: -12.4MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 24918.10ms. Allocated memory was 92.3MB in the beginning and 432.0MB in the end (delta: 339.7MB). Free memory was 67.9MB in the beginning and 361.6MB in the end (delta: -293.7MB). Peak memory consumption was 271.0MB. Max. memory is 16.1GB. * Witness Printer took 31.23ms. Allocated memory is still 432.0MB. Free memory was 361.6MB in the beginning and 358.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 94 PlacesBefore, 27 PlacesAfterwards, 98 TransitionsBefore, 22 TransitionsAfterwards, 1476 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 101 TotalNumberOfCompositions, 1479 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1423, independent: 1417, independent conditional: 0, independent unconditional: 1417, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 763, independent: 759, independent conditional: 0, independent unconditional: 759, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1423, independent: 658, independent conditional: 0, independent unconditional: 658, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 763, unknown conditional: 0, unknown unconditional: 763] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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: -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: 101]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 85]: 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 5 procedures, 124 locations, 12 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: 24.7s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1537 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1307 mSDsluCounter, 877 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 852 mSDsCounter, 438 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3546 IncrementalHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 438 mSolverCounterUnsat, 25 mSDtfsCounter, 3546 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 381 GetRequests, 149 SyntacticMatches, 13 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9679occurred in iteration=12, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 4477 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1018 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 19/172 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 23:28:18,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE