./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 18:25:03,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:25:03,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:25:03,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:25:03,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:25:03,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:25:03,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:25:03,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:25:03,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:25:03,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:25:03,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:25:03,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:25:03,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:25:03,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:25:03,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:25:03,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:25:03,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:25:03,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:25:03,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:25:03,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:25:03,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:25:03,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:25:03,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:25:03,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:25:03,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:25:03,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:25:03,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:25:03,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:25:03,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:25:03,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:25:03,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:25:03,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:25:03,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:25:03,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:25:03,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:25:03,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:25:03,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:25:03,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:25:03,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:25:03,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:25:03,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:25:03,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:25:03,353 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:25:03,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:25:03,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:25:03,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:25:03,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:25:03,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:25:03,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:25:03,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:25:03,356 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:25:03,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:25:03,357 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:25:03,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:25:03,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:25:03,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:25:03,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:25:03,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:25:03,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:25:03,358 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:25:03,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:25:03,359 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:25:03,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:25:03,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:25:03,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:25:03,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:25:03,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:25:03,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:25:03,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:25:03,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:25:03,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:25:03,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:25:03,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:25:03,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:25:03,361 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:25:03,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:25:03,362 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:25:03,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6883737711af32a6a824eca7af237353e2fdaf7712a6b3c22083c0d47b565ee7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:25:03,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:25:03,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:25:03,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:25:03,690 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:25:03,690 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:25:03,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-30 18:25:04,952 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:25:05,214 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:25:05,215 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-30 18:25:05,224 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3974a437b/307081ce254c4798ab5db028497c438a/FLAG795d7df50 [2023-08-30 18:25:05,238 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3974a437b/307081ce254c4798ab5db028497c438a [2023-08-30 18:25:05,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:25:05,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:25:05,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:25:05,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:25:05,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:25:05,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708b12ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05, skipping insertion in model container [2023-08-30 18:25:05,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:25:05,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:25:05,415 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-08-30 18:25:05,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:25:05,579 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:25:05,591 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-08-30 18:25:05,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:25:05,682 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:25:05,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05 WrapperNode [2023-08-30 18:25:05,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:25:05,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:25:05,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:25:05,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:25:05,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,761 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 143 [2023-08-30 18:25:05,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:25:05,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:25:05,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:25:05,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:25:05,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,805 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:25:05,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:25:05,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:25:05,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:25:05,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (1/1) ... [2023-08-30 18:25:05,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:25:05,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:25:05,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 18:25:05,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 18:25:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:25:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 18:25:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:25:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:25:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 18:25:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 18:25:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:25:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:25:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:25:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:25:05,895 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 18:25:06,060 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:25:06,062 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:25:06,313 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:25:06,320 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:25:06,330 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 18:25:06,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:06 BoogieIcfgContainer [2023-08-30 18:25:06,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:25:06,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:25:06,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:25:06,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:25:06,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:25:05" (1/3) ... [2023-08-30 18:25:06,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73886f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:25:06, skipping insertion in model container [2023-08-30 18:25:06,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:05" (2/3) ... [2023-08-30 18:25:06,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73886f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:25:06, skipping insertion in model container [2023-08-30 18:25:06,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:06" (3/3) ... [2023-08-30 18:25:06,340 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-30 18:25:06,347 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:25:06,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:25:06,356 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-30 18:25:06,356 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:25:06,430 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 18:25:06,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 166 transitions, 337 flow [2023-08-30 18:25:06,514 INFO L130 PetriNetUnfolder]: 8/168 cut-off events. [2023-08-30 18:25:06,514 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:06,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 168 events. 8/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 148 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 121. Up to 2 conditions per place. [2023-08-30 18:25:06,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 166 transitions, 337 flow [2023-08-30 18:25:06,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 164 transitions, 331 flow [2023-08-30 18:25:06,531 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:25:06,540 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 164 transitions, 331 flow [2023-08-30 18:25:06,543 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 164 transitions, 331 flow [2023-08-30 18:25:06,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 164 transitions, 331 flow [2023-08-30 18:25:06,579 INFO L130 PetriNetUnfolder]: 8/164 cut-off events. [2023-08-30 18:25:06,588 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:06,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 164 events. 8/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 140 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 121. Up to 2 conditions per place. [2023-08-30 18:25:06,598 INFO L119 LiptonReduction]: Number of co-enabled transitions 6840 [2023-08-30 18:25:11,121 INFO L134 LiptonReduction]: Checked pairs total: 11483 [2023-08-30 18:25:11,121 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-30 18:25:11,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:25:11,139 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@abf001d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:25:11,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 18:25:11,144 INFO L130 PetriNetUnfolder]: 1/14 cut-off events. [2023-08-30 18:25:11,144 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:11,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:11,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 18:25:11,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:11,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:11,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1949297308, now seen corresponding path program 1 times [2023-08-30 18:25:11,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:11,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158217825] [2023-08-30 18:25:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:11,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:11,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:11,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158217825] [2023-08-30 18:25:11,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158217825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:11,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:11,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 18:25:11,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977453275] [2023-08-30 18:25:11,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:11,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:25:11,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:11,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:25:11,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:25:11,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 338 [2023-08-30 18:25:11,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:11,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:11,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 338 [2023-08-30 18:25:11,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:11,898 INFO L130 PetriNetUnfolder]: 119/311 cut-off events. [2023-08-30 18:25:11,898 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:11,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 311 events. 119/311 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1290 event pairs, 10 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 563. Up to 169 conditions per place. [2023-08-30 18:25:11,901 INFO L137 encePairwiseOnDemand]: 331/338 looper letters, 34 selfloop transitions, 5 changer transitions 11/55 dead transitions. [2023-08-30 18:25:11,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 55 transitions, 213 flow [2023-08-30 18:25:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 18:25:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 18:25:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 797 transitions. [2023-08-30 18:25:11,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47159763313609465 [2023-08-30 18:25:11,919 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 797 transitions. [2023-08-30 18:25:11,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 797 transitions. [2023-08-30 18:25:11,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:11,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 797 transitions. [2023-08-30 18:25:11,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.4) internal successors, (797), 5 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:11,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:11,935 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:11,937 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 67 flow. Second operand 5 states and 797 transitions. [2023-08-30 18:25:11,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 55 transitions, 213 flow [2023-08-30 18:25:11,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 55 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:25:11,941 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 83 flow [2023-08-30 18:25:11,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-30 18:25:11,946 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-30 18:25:11,946 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 83 flow [2023-08-30 18:25:11,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:11,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:11,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:11,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:25:11,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:11,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash 668944993, now seen corresponding path program 1 times [2023-08-30 18:25:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:11,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108429709] [2023-08-30 18:25:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:12,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:12,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108429709] [2023-08-30 18:25:12,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108429709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:12,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:12,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:25:12,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220033179] [2023-08-30 18:25:12,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:12,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:25:12,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:12,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:25:12,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:25:12,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 338 [2023-08-30 18:25:12,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:12,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 338 [2023-08-30 18:25:12,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:12,245 INFO L130 PetriNetUnfolder]: 94/257 cut-off events. [2023-08-30 18:25:12,246 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 18:25:12,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 257 events. 94/257 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1059 event pairs, 32 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 537. Up to 120 conditions per place. [2023-08-30 18:25:12,248 INFO L137 encePairwiseOnDemand]: 332/338 looper letters, 40 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2023-08-30 18:25:12,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 240 flow [2023-08-30 18:25:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 18:25:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 18:25:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1212 transitions. [2023-08-30 18:25:12,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44822485207100593 [2023-08-30 18:25:12,252 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1212 transitions. [2023-08-30 18:25:12,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1212 transitions. [2023-08-30 18:25:12,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:12,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1212 transitions. [2023-08-30 18:25:12,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 151.5) internal successors, (1212), 8 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,262 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,263 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 83 flow. Second operand 8 states and 1212 transitions. [2023-08-30 18:25:12,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 240 flow [2023-08-30 18:25:12,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:25:12,265 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 126 flow [2023-08-30 18:25:12,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=126, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-30 18:25:12,266 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-30 18:25:12,266 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 126 flow [2023-08-30 18:25:12,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:12,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:12,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 18:25:12,268 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:12,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1660388124, now seen corresponding path program 1 times [2023-08-30 18:25:12,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:12,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644443519] [2023-08-30 18:25:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:12,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:12,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:12,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644443519] [2023-08-30 18:25:12,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644443519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:12,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:12,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:25:12,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225937336] [2023-08-30 18:25:12,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:12,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:25:12,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:25:12,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 18:25:12,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 338 [2023-08-30 18:25:12,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:12,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 338 [2023-08-30 18:25:12,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:12,448 INFO L130 PetriNetUnfolder]: 84/241 cut-off events. [2023-08-30 18:25:12,448 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2023-08-30 18:25:12,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 241 events. 84/241 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 970 event pairs, 31 based on Foata normal form. 15/256 useless extension candidates. Maximal degree in co-relation 550. Up to 125 conditions per place. [2023-08-30 18:25:12,450 INFO L137 encePairwiseOnDemand]: 330/338 looper letters, 32 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-08-30 18:25:12,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 227 flow [2023-08-30 18:25:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:25:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:25:12,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-30 18:25:12,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46449704142011833 [2023-08-30 18:25:12,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-30 18:25:12,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-30 18:25:12,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:12,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-30 18:25:12,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,457 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 126 flow. Second operand 3 states and 471 transitions. [2023-08-30 18:25:12,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 227 flow [2023-08-30 18:25:12,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 205 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 18:25:12,460 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 127 flow [2023-08-30 18:25:12,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-30 18:25:12,461 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-30 18:25:12,461 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 127 flow [2023-08-30 18:25:12,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:12,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:12,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 18:25:12,462 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:12,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:12,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1388907553, now seen corresponding path program 1 times [2023-08-30 18:25:12,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:12,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380190078] [2023-08-30 18:25:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:12,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:12,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:12,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380190078] [2023-08-30 18:25:12,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380190078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:12,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:12,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:25:12,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64196125] [2023-08-30 18:25:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:12,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:25:12,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:25:12,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:25:12,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 338 [2023-08-30 18:25:12,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:12,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 338 [2023-08-30 18:25:12,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:12,840 INFO L130 PetriNetUnfolder]: 63/212 cut-off events. [2023-08-30 18:25:12,841 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 18:25:12,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 212 events. 63/212 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 925 event pairs, 31 based on Foata normal form. 10/217 useless extension candidates. Maximal degree in co-relation 547. Up to 110 conditions per place. [2023-08-30 18:25:12,842 INFO L137 encePairwiseOnDemand]: 330/338 looper letters, 41 selfloop transitions, 10 changer transitions 1/57 dead transitions. [2023-08-30 18:25:12,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 311 flow [2023-08-30 18:25:12,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 18:25:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 18:25:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1196 transitions. [2023-08-30 18:25:12,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2023-08-30 18:25:12,849 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1196 transitions. [2023-08-30 18:25:12,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1196 transitions. [2023-08-30 18:25:12,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:12,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1196 transitions. [2023-08-30 18:25:12,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.5) internal successors, (1196), 8 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,863 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,863 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 127 flow. Second operand 8 states and 1196 transitions. [2023-08-30 18:25:12,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 311 flow [2023-08-30 18:25:12,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:25:12,868 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 178 flow [2023-08-30 18:25:12,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-30 18:25:12,870 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2023-08-30 18:25:12,870 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 178 flow [2023-08-30 18:25:12,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:12,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:12,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:12,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 18:25:12,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:12,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1288531683, now seen corresponding path program 1 times [2023-08-30 18:25:12,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:12,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469365452] [2023-08-30 18:25:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:12,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:13,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:13,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469365452] [2023-08-30 18:25:13,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469365452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:13,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:13,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:25:13,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277230481] [2023-08-30 18:25:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:13,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:25:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:25:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:25:13,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 338 [2023-08-30 18:25:13,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:13,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 338 [2023-08-30 18:25:13,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:13,238 INFO L130 PetriNetUnfolder]: 62/211 cut-off events. [2023-08-30 18:25:13,238 INFO L131 PetriNetUnfolder]: For 140/142 co-relation queries the response was YES. [2023-08-30 18:25:13,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 211 events. 62/211 cut-off events. For 140/142 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 919 event pairs, 29 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 593. Up to 116 conditions per place. [2023-08-30 18:25:13,240 INFO L137 encePairwiseOnDemand]: 333/338 looper letters, 39 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2023-08-30 18:25:13,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 335 flow [2023-08-30 18:25:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 18:25:13,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 18:25:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 766 transitions. [2023-08-30 18:25:13,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532544378698225 [2023-08-30 18:25:13,243 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 766 transitions. [2023-08-30 18:25:13,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 766 transitions. [2023-08-30 18:25:13,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:13,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 766 transitions. [2023-08-30 18:25:13,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,249 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,249 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 178 flow. Second operand 5 states and 766 transitions. [2023-08-30 18:25:13,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 335 flow [2023-08-30 18:25:13,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 18:25:13,253 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 204 flow [2023-08-30 18:25:13,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2023-08-30 18:25:13,256 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-08-30 18:25:13,256 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 204 flow [2023-08-30 18:25:13,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:13,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:13,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 18:25:13,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:13,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:13,257 INFO L85 PathProgramCache]: Analyzing trace with hash 344959075, now seen corresponding path program 1 times [2023-08-30 18:25:13,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:13,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676439441] [2023-08-30 18:25:13,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:13,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:13,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:13,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676439441] [2023-08-30 18:25:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676439441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:13,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:13,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:25:13,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962196151] [2023-08-30 18:25:13,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:13,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:25:13,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:13,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:25:13,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:25:13,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 338 [2023-08-30 18:25:13,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:13,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 338 [2023-08-30 18:25:13,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:13,552 INFO L130 PetriNetUnfolder]: 58/197 cut-off events. [2023-08-30 18:25:13,553 INFO L131 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2023-08-30 18:25:13,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 197 events. 58/197 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 837 event pairs, 32 based on Foata normal form. 5/198 useless extension candidates. Maximal degree in co-relation 594. Up to 109 conditions per place. [2023-08-30 18:25:13,554 INFO L137 encePairwiseOnDemand]: 331/338 looper letters, 40 selfloop transitions, 10 changer transitions 1/56 dead transitions. [2023-08-30 18:25:13,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 374 flow [2023-08-30 18:25:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:25:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:25:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1070 transitions. [2023-08-30 18:25:13,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452240067624683 [2023-08-30 18:25:13,558 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1070 transitions. [2023-08-30 18:25:13,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1070 transitions. [2023-08-30 18:25:13,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:13,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1070 transitions. [2023-08-30 18:25:13,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,565 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,565 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 204 flow. Second operand 7 states and 1070 transitions. [2023-08-30 18:25:13,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 374 flow [2023-08-30 18:25:13,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 359 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 18:25:13,568 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 247 flow [2023-08-30 18:25:13,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2023-08-30 18:25:13,569 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-08-30 18:25:13,569 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 247 flow [2023-08-30 18:25:13,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.6) internal successors, (743), 5 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:13,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:13,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 18:25:13,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:13,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:13,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1328339176, now seen corresponding path program 1 times [2023-08-30 18:25:13,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:13,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784797660] [2023-08-30 18:25:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:13,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:13,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784797660] [2023-08-30 18:25:13,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784797660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:13,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:13,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:25:13,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349209191] [2023-08-30 18:25:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:13,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:25:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:25:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:25:13,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 338 [2023-08-30 18:25:13,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 145.16666666666666) internal successors, (871), 6 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:13,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:13,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 338 [2023-08-30 18:25:13,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:13,994 INFO L130 PetriNetUnfolder]: 57/187 cut-off events. [2023-08-30 18:25:13,995 INFO L131 PetriNetUnfolder]: For 244/244 co-relation queries the response was YES. [2023-08-30 18:25:13,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 187 events. 57/187 cut-off events. For 244/244 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 752 event pairs, 17 based on Foata normal form. 4/190 useless extension candidates. Maximal degree in co-relation 620. Up to 88 conditions per place. [2023-08-30 18:25:13,996 INFO L137 encePairwiseOnDemand]: 333/338 looper letters, 38 selfloop transitions, 8 changer transitions 3/54 dead transitions. [2023-08-30 18:25:13,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 407 flow [2023-08-30 18:25:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:25:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:25:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 604 transitions. [2023-08-30 18:25:13,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467455621301775 [2023-08-30 18:25:13,999 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 604 transitions. [2023-08-30 18:25:13,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 604 transitions. [2023-08-30 18:25:13,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:14,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 604 transitions. [2023-08-30 18:25:14,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,003 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,003 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 247 flow. Second operand 4 states and 604 transitions. [2023-08-30 18:25:14,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 407 flow [2023-08-30 18:25:14,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 395 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 18:25:14,006 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 243 flow [2023-08-30 18:25:14,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2023-08-30 18:25:14,007 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2023-08-30 18:25:14,007 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 243 flow [2023-08-30 18:25:14,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.16666666666666) internal successors, (871), 6 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:14,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:14,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 18:25:14,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:14,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:14,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1671539549, now seen corresponding path program 1 times [2023-08-30 18:25:14,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:14,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971445383] [2023-08-30 18:25:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:14,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:14,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:14,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971445383] [2023-08-30 18:25:14,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971445383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:14,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:14,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:25:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633432476] [2023-08-30 18:25:14,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:14,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:25:14,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:25:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:25:14,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 338 [2023-08-30 18:25:14,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:14,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 338 [2023-08-30 18:25:14,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:14,320 INFO L130 PetriNetUnfolder]: 46/163 cut-off events. [2023-08-30 18:25:14,320 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-08-30 18:25:14,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 163 events. 46/163 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 613 event pairs, 7 based on Foata normal form. 6/168 useless extension candidates. Maximal degree in co-relation 556. Up to 58 conditions per place. [2023-08-30 18:25:14,321 INFO L137 encePairwiseOnDemand]: 332/338 looper letters, 36 selfloop transitions, 8 changer transitions 1/53 dead transitions. [2023-08-30 18:25:14,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 53 transitions, 389 flow [2023-08-30 18:25:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 18:25:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 18:25:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1191 transitions. [2023-08-30 18:25:14,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4404585798816568 [2023-08-30 18:25:14,325 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1191 transitions. [2023-08-30 18:25:14,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1191 transitions. [2023-08-30 18:25:14,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:14,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1191 transitions. [2023-08-30 18:25:14,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 148.875) internal successors, (1191), 8 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,333 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 338.0) internal successors, (3042), 9 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,333 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 243 flow. Second operand 8 states and 1191 transitions. [2023-08-30 18:25:14,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 53 transitions, 389 flow [2023-08-30 18:25:14,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 373 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 18:25:14,337 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 239 flow [2023-08-30 18:25:14,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2023-08-30 18:25:14,339 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2023-08-30 18:25:14,339 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 239 flow [2023-08-30 18:25:14,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:14,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:14,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 18:25:14,340 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:14,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:14,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1411106432, now seen corresponding path program 1 times [2023-08-30 18:25:14,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:14,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751522508] [2023-08-30 18:25:14,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:14,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:14,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751522508] [2023-08-30 18:25:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751522508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:14,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:14,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 18:25:14,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856945363] [2023-08-30 18:25:14,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:14,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:25:14,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:14,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:25:14,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:25:14,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 338 [2023-08-30 18:25:14,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 239 flow. Second operand has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:14,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 338 [2023-08-30 18:25:14,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:14,807 INFO L130 PetriNetUnfolder]: 42/153 cut-off events. [2023-08-30 18:25:14,807 INFO L131 PetriNetUnfolder]: For 201/201 co-relation queries the response was YES. [2023-08-30 18:25:14,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 153 events. 42/153 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 550 event pairs, 7 based on Foata normal form. 6/158 useless extension candidates. Maximal degree in co-relation 524. Up to 40 conditions per place. [2023-08-30 18:25:14,809 INFO L137 encePairwiseOnDemand]: 331/338 looper letters, 38 selfloop transitions, 11 changer transitions 2/59 dead transitions. [2023-08-30 18:25:14,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 427 flow [2023-08-30 18:25:14,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 18:25:14,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 18:25:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1749 transitions. [2023-08-30 18:25:14,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312130177514793 [2023-08-30 18:25:14,814 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1749 transitions. [2023-08-30 18:25:14,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1749 transitions. [2023-08-30 18:25:14,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:14,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1749 transitions. [2023-08-30 18:25:14,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 145.75) internal successors, (1749), 12 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 338.0) internal successors, (4394), 13 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,831 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 338.0) internal successors, (4394), 13 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,832 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 239 flow. Second operand 12 states and 1749 transitions. [2023-08-30 18:25:14,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 427 flow [2023-08-30 18:25:14,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 399 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-30 18:25:14,834 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 234 flow [2023-08-30 18:25:14,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=234, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2023-08-30 18:25:14,835 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2023-08-30 18:25:14,836 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 234 flow [2023-08-30 18:25:14,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:14,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:14,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:14,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 18:25:14,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:14,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1136432958, now seen corresponding path program 1 times [2023-08-30 18:25:14,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:14,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43344903] [2023-08-30 18:25:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:14,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:15,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:15,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43344903] [2023-08-30 18:25:15,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43344903] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:15,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:15,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:25:15,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546035529] [2023-08-30 18:25:15,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:15,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:25:15,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:25:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:25:15,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 338 [2023-08-30 18:25:15,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:15,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 338 [2023-08-30 18:25:15,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:15,224 INFO L130 PetriNetUnfolder]: 41/149 cut-off events. [2023-08-30 18:25:15,224 INFO L131 PetriNetUnfolder]: For 192/196 co-relation queries the response was YES. [2023-08-30 18:25:15,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 149 events. 41/149 cut-off events. For 192/196 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 508 event pairs, 18 based on Foata normal form. 7/154 useless extension candidates. Maximal degree in co-relation 510. Up to 57 conditions per place. [2023-08-30 18:25:15,225 INFO L137 encePairwiseOnDemand]: 332/338 looper letters, 32 selfloop transitions, 13 changer transitions 5/55 dead transitions. [2023-08-30 18:25:15,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 397 flow [2023-08-30 18:25:15,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:25:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:25:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1039 transitions. [2023-08-30 18:25:15,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43913778529163144 [2023-08-30 18:25:15,229 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1039 transitions. [2023-08-30 18:25:15,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1039 transitions. [2023-08-30 18:25:15,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:15,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1039 transitions. [2023-08-30 18:25:15,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.42857142857142) internal successors, (1039), 7 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 338.0) internal successors, (2704), 8 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,235 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 234 flow. Second operand 7 states and 1039 transitions. [2023-08-30 18:25:15,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 397 flow [2023-08-30 18:25:15,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 372 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 18:25:15,237 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 240 flow [2023-08-30 18:25:15,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2023-08-30 18:25:15,239 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-08-30 18:25:15,239 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 240 flow [2023-08-30 18:25:15,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:15,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:15,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 18:25:15,240 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-30 18:25:15,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:15,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1190116540, now seen corresponding path program 1 times [2023-08-30 18:25:15,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:15,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534744697] [2023-08-30 18:25:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:15,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:25:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:25:15,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:25:15,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534744697] [2023-08-30 18:25:15,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534744697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:25:15,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:25:15,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:25:15,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29708072] [2023-08-30 18:25:15,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:25:15,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:25:15,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:25:15,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:25:15,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:25:15,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 338 [2023-08-30 18:25:15,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:25:15,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 338 [2023-08-30 18:25:15,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:25:15,655 INFO L130 PetriNetUnfolder]: 22/96 cut-off events. [2023-08-30 18:25:15,655 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-30 18:25:15,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 96 events. 22/96 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 267 event pairs, 4 based on Foata normal form. 15/111 useless extension candidates. Maximal degree in co-relation 335. Up to 78 conditions per place. [2023-08-30 18:25:15,655 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-30 18:25:15,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 42 transitions, 314 flow [2023-08-30 18:25:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:25:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:25:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 600 transitions. [2023-08-30 18:25:15,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437869822485207 [2023-08-30 18:25:15,658 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 600 transitions. [2023-08-30 18:25:15,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 600 transitions. [2023-08-30 18:25:15,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:25:15,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 600 transitions. [2023-08-30 18:25:15,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,662 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,662 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 240 flow. Second operand 4 states and 600 transitions. [2023-08-30 18:25:15,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 42 transitions, 314 flow [2023-08-30 18:25:15,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 289 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-30 18:25:15,663 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2023-08-30 18:25:15,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2023-08-30 18:25:15,664 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2023-08-30 18:25:15,664 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2023-08-30 18:25:15,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:25:15,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-30 18:25:15,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-30 18:25:15,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-30 18:25:15,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-30 18:25:15,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-30 18:25:15,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-30 18:25:15,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-30 18:25:15,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 18:25:15,668 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:25:15,672 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 18:25:15,672 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 18:25:15,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:25:15 BasicIcfg [2023-08-30 18:25:15,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 18:25:15,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 18:25:15,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 18:25:15,675 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 18:25:15,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:06" (3/4) ... [2023-08-30 18:25:15,677 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 18:25:15,682 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-30 18:25:15,685 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 18:25:15,686 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 18:25:15,686 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 18:25:15,686 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 18:25:15,714 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 18:25:15,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 18:25:15,715 INFO L158 Benchmark]: Toolchain (without parser) took 10473.86ms. Allocated memory was 69.2MB in the beginning and 167.8MB in the end (delta: 98.6MB). Free memory was 33.2MB in the beginning and 60.6MB in the end (delta: -27.5MB). Peak memory consumption was 70.6MB. Max. memory is 16.1GB. [2023-08-30 18:25:15,715 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:25:15,715 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.19ms. Allocated memory is still 69.2MB. Free memory was 33.2MB in the beginning and 32.7MB in the end (delta: 525.2kB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-08-30 18:25:15,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.40ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 32.4MB in the beginning and 68.8MB in the end (delta: -36.3MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2023-08-30 18:25:15,716 INFO L158 Benchmark]: Boogie Preprocessor took 52.28ms. Allocated memory is still 90.2MB. Free memory was 68.8MB in the beginning and 67.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 18:25:15,716 INFO L158 Benchmark]: RCFGBuilder took 517.24ms. Allocated memory is still 90.2MB. Free memory was 67.1MB in the beginning and 49.9MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 18:25:15,716 INFO L158 Benchmark]: TraceAbstraction took 9340.02ms. Allocated memory was 90.2MB in the beginning and 167.8MB in the end (delta: 77.6MB). Free memory was 49.1MB in the beginning and 63.8MB in the end (delta: -14.6MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2023-08-30 18:25:15,717 INFO L158 Benchmark]: Witness Printer took 39.72ms. Allocated memory is still 167.8MB. Free memory was 63.8MB in the beginning and 60.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 18:25:15,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 441.19ms. Allocated memory is still 69.2MB. Free memory was 33.2MB in the beginning and 32.7MB in the end (delta: 525.2kB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.40ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 32.4MB in the beginning and 68.8MB in the end (delta: -36.3MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.28ms. Allocated memory is still 90.2MB. Free memory was 68.8MB in the beginning and 67.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 517.24ms. Allocated memory is still 90.2MB. Free memory was 67.1MB in the beginning and 49.9MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9340.02ms. Allocated memory was 90.2MB in the beginning and 167.8MB in the end (delta: 77.6MB). Free memory was 49.1MB in the beginning and 63.8MB in the end (delta: -14.6MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. * Witness Printer took 39.72ms. Allocated memory is still 167.8MB. Free memory was 63.8MB in the beginning and 60.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 160 PlacesBefore, 33 PlacesAfterwards, 164 TransitionsBefore, 32 TransitionsAfterwards, 6840 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 102 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 5 ChoiceCompositions, 172 TotalNumberOfCompositions, 11483 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6171, independent: 5919, independent conditional: 0, independent unconditional: 5919, dependent: 252, dependent conditional: 0, dependent unconditional: 252, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3845, independent: 3793, independent conditional: 0, independent unconditional: 3793, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6171, independent: 2126, independent conditional: 0, independent unconditional: 2126, dependent: 200, dependent conditional: 0, dependent unconditional: 200, unknown: 3845, unknown conditional: 0, unknown unconditional: 3845] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 230 locations, 7 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: 9.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1185 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 841 mSDsluCounter, 484 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 380 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2009 IncrementalHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 104 mSDtfsCounter, 2009 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=6, InterpolantAutomatonStates: 71, 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, 1.9s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 743 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 18:25:15,733 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