./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.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 75c86508b929748d0860a2261aae2f86897f25a70c1055933792f6abb004bc7e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:15:52,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:15:52,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:15:52,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:15:52,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:15:52,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:15:52,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:15:52,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:15:52,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:15:52,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:15:52,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:15:52,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:15:52,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:15:52,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:15:52,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:15:52,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:15:52,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:15:52,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:15:52,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:15:52,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:15:52,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:15:52,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:15:52,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:15:52,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:15:52,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:15:52,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:15:52,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:15:52,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:15:52,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:15:52,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:15:52,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:15:52,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:15:52,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:15:52,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:15:52,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:15:52,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:15:52,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:15:52,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:15:52,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:15:52,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:15:52,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:15:52,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:15:52,268 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:15:52,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:15:52,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:15:52,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:15:52,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:15:52,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:15:52,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:15:52,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:15:52,271 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:15:52,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:15:52,272 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:15:52,273 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:15:52,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:15:52,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:15:52,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:15:52,273 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:15:52,274 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:15:52,274 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:15:52,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:15:52,274 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:15:52,274 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:15:52,275 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:15:52,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:15:52,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:15:52,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:15:52,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:15:52,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:15:52,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:15:52,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:15:52,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:15:52,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:15:52,277 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:15:52,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:15:52,277 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:15:52,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75c86508b929748d0860a2261aae2f86897f25a70c1055933792f6abb004bc7e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:15:52,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:15:52,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:15:52,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:15:52,579 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:15:52,580 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:15:52,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2023-09-01 02:15:53,809 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:15:54,088 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:15:54,089 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2023-09-01 02:15:54,100 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea568a127/4fa375e935fe4561bc95b1b05c79bf25/FLAGa87b0b20a [2023-09-01 02:15:54,111 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea568a127/4fa375e935fe4561bc95b1b05c79bf25 [2023-09-01 02:15:54,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:15:54,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:15:54,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:15:54,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:15:54,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:15:54,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569054c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54, skipping insertion in model container [2023-09-01 02:15:54,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:15:54,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:15:54,269 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-bluetooth.wvr.c[3134,3147] [2023-09-01 02:15:54,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:15:54,281 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:15:54,299 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-bluetooth.wvr.c[3134,3147] [2023-09-01 02:15:54,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:15:54,307 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:15:54,308 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:15:54,313 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:15:54,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54 WrapperNode [2023-09-01 02:15:54,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:15:54,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:15:54,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:15:54,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:15:54,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,346 INFO L138 Inliner]: procedures = 21, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 125 [2023-09-01 02:15:54,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:15:54,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:15:54,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:15:54,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:15:54,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:15:54,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:15:54,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:15:54,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:15:54,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (1/1) ... [2023-09-01 02:15:54,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:15:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:15:54,438 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) [2023-09-01 02:15:54,457 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 [2023-09-01 02:15:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:15:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:15:54,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:15:54,474 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:15:54,475 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:15:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:15:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:15:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:15:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:15:54,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:15:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:15:54,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:15:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:15:54,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:15:54,477 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:15:54,579 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:15:54,581 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:15:54,913 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:15:54,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:15:54,948 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 02:15:54,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:15:54 BoogieIcfgContainer [2023-09-01 02:15:54,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:15:54,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:15:54,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:15:54,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:15:54,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:15:54" (1/3) ... [2023-09-01 02:15:54,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af2e159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:15:54, skipping insertion in model container [2023-09-01 02:15:54,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:15:54" (2/3) ... [2023-09-01 02:15:54,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af2e159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:15:54, skipping insertion in model container [2023-09-01 02:15:54,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:15:54" (3/3) ... [2023-09-01 02:15:54,958 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2023-09-01 02:15:54,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:15:54,972 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 02:15:54,973 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:15:55,027 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 02:15:55,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 140 transitions, 296 flow [2023-09-01 02:15:55,117 INFO L130 PetriNetUnfolder]: 9/138 cut-off events. [2023-09-01 02:15:55,117 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:15:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 9/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2023-09-01 02:15:55,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 140 transitions, 296 flow [2023-09-01 02:15:55,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 134 transitions, 280 flow [2023-09-01 02:15:55,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:15:55,136 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 134 transitions, 280 flow [2023-09-01 02:15:55,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 134 transitions, 280 flow [2023-09-01 02:15:55,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 134 transitions, 280 flow [2023-09-01 02:15:55,187 INFO L130 PetriNetUnfolder]: 9/134 cut-off events. [2023-09-01 02:15:55,188 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:15:55,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 134 events. 9/134 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2023-09-01 02:15:55,198 INFO L119 LiptonReduction]: Number of co-enabled transitions 604 [2023-09-01 02:15:59,817 INFO L134 LiptonReduction]: Checked pairs total: 3360 [2023-09-01 02:15:59,818 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-09-01 02:15:59,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:15:59,836 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;@1626d69e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:15:59,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-09-01 02:15:59,838 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 02:15:59,839 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:15:59,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:15:59,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:15:59,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:15:59,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:15:59,844 INFO L85 PathProgramCache]: Analyzing trace with hash 543, now seen corresponding path program 1 times [2023-09-01 02:15:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:15:59,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907099293] [2023-09-01 02:15:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:15:59,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:15:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:15:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:15:59,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:15:59,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907099293] [2023-09-01 02:15:59,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907099293] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:15:59,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:15:59,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:15:59,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904829712] [2023-09-01 02:15:59,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:15:59,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:15:59,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:15:59,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:15:59,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:15:59,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 286 [2023-09-01 02:15:59,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 123.5) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:15:59,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:15:59,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 286 [2023-09-01 02:15:59,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:16:00,088 INFO L130 PetriNetUnfolder]: 209/372 cut-off events. [2023-09-01 02:16:00,089 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 02:16:00,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 372 events. 209/372 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1367 event pairs, 161 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 624. Up to 349 conditions per place. [2023-09-01 02:16:00,094 INFO L137 encePairwiseOnDemand]: 283/286 looper letters, 25 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2023-09-01 02:16:00,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 118 flow [2023-09-01 02:16:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:16:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:16:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 274 transitions. [2023-09-01 02:16:00,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.479020979020979 [2023-09-01 02:16:00,112 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 274 transitions. [2023-09-01 02:16:00,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 274 transitions. [2023-09-01 02:16:00,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:16:00,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 274 transitions. [2023-09-01 02:16:00,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,127 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,129 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 74 flow. Second operand 2 states and 274 transitions. [2023-09-01 02:16:00,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 118 flow [2023-09-01 02:16:00,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 02:16:00,133 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 60 flow [2023-09-01 02:16:00,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2023-09-01 02:16:00,138 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-09-01 02:16:00,138 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 60 flow [2023-09-01 02:16:00,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 123.5) internal successors, (247), 2 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:16:00,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:16:00,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:16:00,141 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)] === [2023-09-01 02:16:00,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:16:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash 535498, now seen corresponding path program 1 times [2023-09-01 02:16:00,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:16:00,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61206027] [2023-09-01 02:16:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:16:00,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:16:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:16:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:16:00,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:16:00,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61206027] [2023-09-01 02:16:00,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61206027] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:16:00,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:16:00,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:16:00,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643181736] [2023-09-01 02:16:00,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:16:00,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:16:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:16:00,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:16:00,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:16:00,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 286 [2023-09-01 02:16:00,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:16:00,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 286 [2023-09-01 02:16:00,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:16:00,513 INFO L130 PetriNetUnfolder]: 199/351 cut-off events. [2023-09-01 02:16:00,513 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:16:00,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 351 events. 199/351 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1261 event pairs, 153 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 684. Up to 328 conditions per place. [2023-09-01 02:16:00,515 INFO L137 encePairwiseOnDemand]: 283/286 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-09-01 02:16:00,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 102 flow [2023-09-01 02:16:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:16:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:16:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-09-01 02:16:00,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417249417249417 [2023-09-01 02:16:00,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-09-01 02:16:00,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-09-01 02:16:00,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:16:00,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-09-01 02:16:00,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,540 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 60 flow. Second operand 3 states and 379 transitions. [2023-09-01 02:16:00,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 102 flow [2023-09-01 02:16:00,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:16:00,542 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 58 flow [2023-09-01 02:16:00,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2023-09-01 02:16:00,543 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-09-01 02:16:00,543 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 58 flow [2023-09-01 02:16:00,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:16:00,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:16:00,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:16:00,544 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)] === [2023-09-01 02:16:00,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:16:00,545 INFO L85 PathProgramCache]: Analyzing trace with hash 535500, now seen corresponding path program 1 times [2023-09-01 02:16:00,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:16:00,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032012578] [2023-09-01 02:16:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:16:00,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:16:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:16:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:16:00,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:16:00,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032012578] [2023-09-01 02:16:00,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032012578] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:16:00,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:16:00,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:16:00,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417269095] [2023-09-01 02:16:00,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:16:00,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:16:00,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:16:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:16:00,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:16:00,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 286 [2023-09-01 02:16:00,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:16:00,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 286 [2023-09-01 02:16:00,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:16:00,676 INFO L130 PetriNetUnfolder]: 189/330 cut-off events. [2023-09-01 02:16:00,676 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:16:00,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 330 events. 189/330 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1166 event pairs, 145 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 644. Up to 308 conditions per place. [2023-09-01 02:16:00,679 INFO L137 encePairwiseOnDemand]: 283/286 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 02:16:00,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 96 flow [2023-09-01 02:16:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:16:00,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:16:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-09-01 02:16:00,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254079254079254 [2023-09-01 02:16:00,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-09-01 02:16:00,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-09-01 02:16:00,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:16:00,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-09-01 02:16:00,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,685 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 58 flow. Second operand 3 states and 365 transitions. [2023-09-01 02:16:00,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 96 flow [2023-09-01 02:16:00,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:16:00,686 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 55 flow [2023-09-01 02:16:00,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-09-01 02:16:00,687 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2023-09-01 02:16:00,688 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 55 flow [2023-09-01 02:16:00,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:16:00,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:16:00,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:16:00,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:16:00,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:16:00,689 INFO L85 PathProgramCache]: Analyzing trace with hash 514626315, now seen corresponding path program 1 times [2023-09-01 02:16:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:16:00,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119232533] [2023-09-01 02:16:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:16:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:16:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:16:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:16:00,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:16:00,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119232533] [2023-09-01 02:16:00,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119232533] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:16:00,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:16:00,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:16:00,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615594488] [2023-09-01 02:16:00,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:16:00,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:16:00,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:16:00,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:16:00,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:16:00,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 286 [2023-09-01 02:16:00,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:16:00,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 286 [2023-09-01 02:16:00,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:16:00,986 INFO L130 PetriNetUnfolder]: 141/254 cut-off events. [2023-09-01 02:16:00,986 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:16:00,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 254 events. 141/254 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 829 event pairs, 107 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 497. Up to 236 conditions per place. [2023-09-01 02:16:00,989 INFO L137 encePairwiseOnDemand]: 284/286 looper letters, 19 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-09-01 02:16:00,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 93 flow [2023-09-01 02:16:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:16:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:16:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-09-01 02:16:00,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43006993006993005 [2023-09-01 02:16:00,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-09-01 02:16:00,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-09-01 02:16:00,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:16:00,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-09-01 02:16:00,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:00,998 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 55 flow. Second operand 3 states and 369 transitions. [2023-09-01 02:16:00,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 93 flow [2023-09-01 02:16:00,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 92 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:16:01,000 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 54 flow [2023-09-01 02:16:01,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-09-01 02:16:01,001 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2023-09-01 02:16:01,002 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 54 flow [2023-09-01 02:16:01,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:16:01,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:16:01,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:16:01,003 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:16:01,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:16:01,004 INFO L85 PathProgramCache]: Analyzing trace with hash 514626316, now seen corresponding path program 1 times [2023-09-01 02:16:01,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:16:01,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034204180] [2023-09-01 02:16:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:16:01,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:16:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:16:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:16:01,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:16:01,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034204180] [2023-09-01 02:16:01,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034204180] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:16:01,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:16:01,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:16:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938053337] [2023-09-01 02:16:01,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:16:01,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:16:01,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:16:01,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:16:01,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:16:01,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 286 [2023-09-01 02:16:01,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:16:01,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 286 [2023-09-01 02:16:01,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:16:01,186 INFO L130 PetriNetUnfolder]: 93/178 cut-off events. [2023-09-01 02:16:01,187 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:16:01,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 178 events. 93/178 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 528 event pairs, 69 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 350. Up to 164 conditions per place. [2023-09-01 02:16:01,189 INFO L137 encePairwiseOnDemand]: 284/286 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-09-01 02:16:01,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 90 flow [2023-09-01 02:16:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:16:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:16:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-09-01 02:16:01,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40792540792540793 [2023-09-01 02:16:01,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-09-01 02:16:01,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-09-01 02:16:01,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:16:01,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-09-01 02:16:01,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,195 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 54 flow. Second operand 3 states and 350 transitions. [2023-09-01 02:16:01,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 90 flow [2023-09-01 02:16:01,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:16:01,198 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 53 flow [2023-09-01 02:16:01,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-09-01 02:16:01,200 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2023-09-01 02:16:01,200 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 53 flow [2023-09-01 02:16:01,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:16:01,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:16:01,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:16:01,201 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)] === [2023-09-01 02:16:01,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:16:01,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1369022503, now seen corresponding path program 1 times [2023-09-01 02:16:01,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:16:01,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621406423] [2023-09-01 02:16:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:16:01,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:16:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:16:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:16:01,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:16:01,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621406423] [2023-09-01 02:16:01,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621406423] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:16:01,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:16:01,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:16:01,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131141246] [2023-09-01 02:16:01,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:16:01,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:16:01,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:16:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:16:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:16:01,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 286 [2023-09-01 02:16:01,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:16:01,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 286 [2023-09-01 02:16:01,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:16:01,395 INFO L130 PetriNetUnfolder]: 110/219 cut-off events. [2023-09-01 02:16:01,395 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:16:01,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 219 events. 110/219 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 751 event pairs, 49 based on Foata normal form. 10/224 useless extension candidates. Maximal degree in co-relation 434. Up to 112 conditions per place. [2023-09-01 02:16:01,397 INFO L137 encePairwiseOnDemand]: 282/286 looper letters, 29 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-09-01 02:16:01,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 145 flow [2023-09-01 02:16:01,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:16:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:16:01,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-09-01 02:16:01,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-09-01 02:16:01,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-09-01 02:16:01,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-09-01 02:16:01,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:16:01,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-09-01 02:16:01,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,403 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 53 flow. Second operand 3 states and 390 transitions. [2023-09-01 02:16:01,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 145 flow [2023-09-01 02:16:01,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:16:01,405 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 71 flow [2023-09-01 02:16:01,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-09-01 02:16:01,408 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-09-01 02:16:01,408 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 71 flow [2023-09-01 02:16:01,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:16:01,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:16:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:16:01,410 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)] === [2023-09-01 02:16:01,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:16:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash 859700184, now seen corresponding path program 1 times [2023-09-01 02:16:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:16:01,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853627277] [2023-09-01 02:16:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:16:01,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:16:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:16:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:16:01,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:16:01,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853627277] [2023-09-01 02:16:01,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853627277] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:16:01,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:16:01,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:16:01,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843557520] [2023-09-01 02:16:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:16:01,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:16:01,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:16:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:16:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:16:01,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 286 [2023-09-01 02:16:01,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:16:01,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 286 [2023-09-01 02:16:01,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:16:01,861 INFO L130 PetriNetUnfolder]: 113/234 cut-off events. [2023-09-01 02:16:01,861 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-09-01 02:16:01,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 234 events. 113/234 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 835 event pairs, 41 based on Foata normal form. 1/234 useless extension candidates. Maximal degree in co-relation 524. Up to 159 conditions per place. [2023-09-01 02:16:01,862 INFO L137 encePairwiseOnDemand]: 282/286 looper letters, 17 selfloop transitions, 2 changer transitions 25/47 dead transitions. [2023-09-01 02:16:01,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 218 flow [2023-09-01 02:16:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:16:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:16:01,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 633 transitions. [2023-09-01 02:16:01,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44265734265734263 [2023-09-01 02:16:01,865 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 633 transitions. [2023-09-01 02:16:01,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 633 transitions. [2023-09-01 02:16:01,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:16:01,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 633 transitions. [2023-09-01 02:16:01,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,869 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,869 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 71 flow. Second operand 5 states and 633 transitions. [2023-09-01 02:16:01,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 218 flow [2023-09-01 02:16:01,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:16:01,871 INFO L231 Difference]: Finished difference. Result has 36 places, 21 transitions, 68 flow [2023-09-01 02:16:01,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2023-09-01 02:16:01,872 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-09-01 02:16:01,872 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 68 flow [2023-09-01 02:16:01,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:01,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:16:01,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:16:01,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:16:01,873 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)] === [2023-09-01 02:16:01,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:16:01,873 INFO L85 PathProgramCache]: Analyzing trace with hash 927481340, now seen corresponding path program 1 times [2023-09-01 02:16:01,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:16:01,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175014471] [2023-09-01 02:16:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:16:01,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:16:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:16:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:16:02,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:16:02,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175014471] [2023-09-01 02:16:02,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175014471] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:16:02,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:16:02,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:16:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149962191] [2023-09-01 02:16:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:16:02,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:16:02,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:16:02,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:16:02,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:16:02,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 286 [2023-09-01 02:16:02,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:02,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:16:02,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 286 [2023-09-01 02:16:02,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:16:02,092 INFO L130 PetriNetUnfolder]: 3/15 cut-off events. [2023-09-01 02:16:02,093 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:16:02,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 15 events. 3/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 2/16 useless extension candidates. Maximal degree in co-relation 37. Up to 5 conditions per place. [2023-09-01 02:16:02,093 INFO L137 encePairwiseOnDemand]: 281/286 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-09-01 02:16:02,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 12 transitions, 57 flow [2023-09-01 02:16:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 02:16:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 02:16:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 726 transitions. [2023-09-01 02:16:02,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2023-09-01 02:16:02,096 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 726 transitions. [2023-09-01 02:16:02,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 726 transitions. [2023-09-01 02:16:02,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:16:02,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 726 transitions. [2023-09-01 02:16:02,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:02,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:02,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:02,101 INFO L175 Difference]: Start difference. First operand has 36 places, 21 transitions, 68 flow. Second operand 6 states and 726 transitions. [2023-09-01 02:16:02,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 12 transitions, 57 flow [2023-09-01 02:16:02,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 12 transitions, 54 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 02:16:02,102 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-09-01 02:16:02,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-09-01 02:16:02,102 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -11 predicate places. [2023-09-01 02:16:02,103 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-09-01 02:16:02,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:16:02,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-09-01 02:16:02,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-09-01 02:16:02,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-09-01 02:16:02,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-09-01 02:16:02,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-09-01 02:16:02,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-09-01 02:16:02,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-09-01 02:16:02,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-09-01 02:16:02,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-09-01 02:16:02,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-09-01 02:16:02,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-09-01 02:16:02,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-09-01 02:16:02,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 02:16:02,109 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:16:02,111 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 02:16:02,111 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 02:16:02,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:16:02 BasicIcfg [2023-09-01 02:16:02,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 02:16:02,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 02:16:02,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 02:16:02,115 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 02:16:02,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:15:54" (3/4) ... [2023-09-01 02:16:02,118 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 02:16:02,122 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 02:16:02,122 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 02:16:02,127 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-09-01 02:16:02,127 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 02:16:02,127 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 02:16:02,127 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 02:16:02,168 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 02:16:02,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 02:16:02,169 INFO L158 Benchmark]: Toolchain (without parser) took 8055.12ms. Allocated memory was 71.3MB in the beginning and 161.5MB in the end (delta: 90.2MB). Free memory was 48.7MB in the beginning and 47.2MB in the end (delta: 1.5MB). Peak memory consumption was 91.8MB. Max. memory is 16.1GB. [2023-09-01 02:16:02,169 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory was 49.7MB in the beginning and 49.6MB in the end (delta: 53.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:16:02,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.57ms. Allocated memory is still 71.3MB. Free memory was 48.5MB in the beginning and 37.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:16:02,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.73ms. Allocated memory is still 71.3MB. Free memory was 37.5MB in the beginning and 35.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:16:02,170 INFO L158 Benchmark]: Boogie Preprocessor took 51.15ms. Allocated memory is still 71.3MB. Free memory was 35.5MB in the beginning and 34.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:16:02,170 INFO L158 Benchmark]: RCFGBuilder took 551.35ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 34.0MB in the beginning and 80.0MB in the end (delta: -46.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:16:02,171 INFO L158 Benchmark]: TraceAbstraction took 7162.30ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 79.3MB in the beginning and 50.3MB in the end (delta: 29.0MB). Peak memory consumption was 79.2MB. Max. memory is 16.1GB. [2023-09-01 02:16:02,171 INFO L158 Benchmark]: Witness Printer took 53.97ms. Allocated memory is still 161.5MB. Free memory was 50.3MB in the beginning and 47.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 02:16:02,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory was 49.7MB in the beginning and 49.6MB in the end (delta: 53.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.57ms. Allocated memory is still 71.3MB. Free memory was 48.5MB in the beginning and 37.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.73ms. Allocated memory is still 71.3MB. Free memory was 37.5MB in the beginning and 35.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.15ms. Allocated memory is still 71.3MB. Free memory was 35.5MB in the beginning and 34.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 551.35ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 34.0MB in the beginning and 80.0MB in the end (delta: -46.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7162.30ms. Allocated memory was 111.1MB in the beginning and 161.5MB in the end (delta: 50.3MB). Free memory was 79.3MB in the beginning and 50.3MB in the end (delta: 29.0MB). Peak memory consumption was 79.2MB. Max. memory is 16.1GB. * Witness Printer took 53.97ms. Allocated memory is still 161.5MB. Free memory was 50.3MB in the beginning and 47.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 132 PlacesBefore, 36 PlacesAfterwards, 134 TransitionsBefore, 31 TransitionsAfterwards, 604 CoEnabledTransitionPairs, 8 FixpointIterations, 91 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 146 TotalNumberOfCompositions, 3360 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1389, independent: 1195, independent conditional: 0, independent unconditional: 1195, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 356, independent: 336, independent conditional: 0, independent unconditional: 336, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1389, independent: 859, independent conditional: 0, independent unconditional: 859, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 356, unknown conditional: 0, unknown unconditional: 356] , Statistics on independence cache: Total cache size (in pairs): 97, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 115]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 90]: 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, 153 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: 7.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 371 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 516 IncrementalHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 31 mSDtfsCounter, 516 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 586 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 02:16:02,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE