./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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 ../sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.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 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:14:33,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:14:33,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:14:33,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:14:33,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:14:33,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:14:33,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:14:33,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:14:33,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:14:33,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:14:33,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:14:33,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:14:33,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:14:33,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:14:33,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:14:33,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:14:33,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:14:33,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:14:33,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:14:33,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:14:33,365 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:14:33,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:14:33,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:14:33,368 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:14:33,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:14:33,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:14:33,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:14:33,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:14:33,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:14:33,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:14:33,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:14:33,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:14:33,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:14:33,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:14:33,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:14:33,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:14:33,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:14:33,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:14:33,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:14:33,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:14:33,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:14:33,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:14:33,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:14:33,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:14:33,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:14:33,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:14:33,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:14:33,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:14:33,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:14:33,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:14:33,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:14:33,428 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:14:33,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:14:33,429 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:14:33,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:14:33,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:14:33,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:14:33,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:14:33,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:14:33,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:14:33,431 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:14:33,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:14:33,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:14:33,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:14:33,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:14:33,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:14:33,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:14:33,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:14:33,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:14:33,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:14:33,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:14:33,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:14:33,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:14:33,434 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:14:33,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:14:33,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:14:33,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f12d466eb2f537fd698a609dad75de92993414755aa8aadb35a91de87d65611 [2022-07-12 10:14:33,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:14:33,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:14:33,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:14:33,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:14:33,723 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:14:33,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i [2022-07-12 10:14:33,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed8fd4ad1/ae16450555b44bfa92edc3b973102d33/FLAG469470491 [2022-07-12 10:14:34,250 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:14:34,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i [2022-07-12 10:14:34,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed8fd4ad1/ae16450555b44bfa92edc3b973102d33/FLAG469470491 [2022-07-12 10:14:34,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed8fd4ad1/ae16450555b44bfa92edc3b973102d33 [2022-07-12 10:14:34,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:14:34,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:14:34,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:14:34,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:14:34,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:14:34,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:14:34" (1/1) ... [2022-07-12 10:14:34,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67504e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:34, skipping insertion in model container [2022-07-12 10:14:34,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:14:34" (1/1) ... [2022-07-12 10:14:34,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:14:34,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:14:34,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2022-07-12 10:14:34,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:14:34,913 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:14:34,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_01-priv_nr_true.i[1084,1097] [2022-07-12 10:14:34,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:14:35,023 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:14:35,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35 WrapperNode [2022-07-12 10:14:35,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:14:35,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:14:35,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:14:35,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:14:35,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,086 INFO L137 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 84 [2022-07-12 10:14:35,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:14:35,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:14:35,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:14:35,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:14:35,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:14:35,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:14:35,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:14:35,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:14:35,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (1/1) ... [2022-07-12 10:14:35,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:14:35,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:14:35,189 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) [2022-07-12 10:14:35,196 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 [2022-07-12 10:14:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:14:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:14:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:14:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:14:35,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:14:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-12 10:14:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-12 10:14:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:14:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:14:35,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:14:35,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:14:35,229 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:14:35,315 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:14:35,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:14:35,535 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:14:35,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:14:35,544 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:14:35,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:14:35 BoogieIcfgContainer [2022-07-12 10:14:35,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:14:35,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:14:35,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:14:35,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:14:35,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:14:34" (1/3) ... [2022-07-12 10:14:35,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353054bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:14:35, skipping insertion in model container [2022-07-12 10:14:35,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:14:35" (2/3) ... [2022-07-12 10:14:35,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353054bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:14:35, skipping insertion in model container [2022-07-12 10:14:35,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:14:35" (3/3) ... [2022-07-12 10:14:35,561 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_01-priv_nr_true.i [2022-07-12 10:14:35,565 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:14:35,573 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:14:35,574 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-12 10:14:35,574 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:14:35,615 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-12 10:14:35,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 105 transitions, 218 flow [2022-07-12 10:14:35,682 INFO L129 PetriNetUnfolder]: 4/104 cut-off events. [2022-07-12 10:14:35,682 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:14:35,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 104 events. 4/104 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-07-12 10:14:35,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 105 transitions, 218 flow [2022-07-12 10:14:35,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 96 transitions, 195 flow [2022-07-12 10:14:35,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:14:35,706 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@248a7f6e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@11b55b81 [2022-07-12 10:14:35,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:14:35,716 INFO L129 PetriNetUnfolder]: 0/37 cut-off events. [2022-07-12 10:14:35,716 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:14:35,717 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:14:35,717 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:14:35,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:14:35,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:14:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash -117580950, now seen corresponding path program 1 times [2022-07-12 10:14:35,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:14:35,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013335108] [2022-07-12 10:14:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:14:35,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:14:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:14:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:14:36,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:14:36,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013335108] [2022-07-12 10:14:36,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013335108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:14:36,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:14:36,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:14:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673024025] [2022-07-12 10:14:36,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:14:36,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:14:36,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:14:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:14:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:14:36,136 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 105 [2022-07-12 10:14:36,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:14:36,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 105 [2022-07-12 10:14:36,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:14:36,246 INFO L129 PetriNetUnfolder]: 36/209 cut-off events. [2022-07-12 10:14:36,249 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:14:36,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 209 events. 36/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 804 event pairs, 4 based on Foata normal form. 25/223 useless extension candidates. Maximal degree in co-relation 254. Up to 36 conditions per place. [2022-07-12 10:14:36,253 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 23 selfloop transitions, 8 changer transitions 0/98 dead transitions. [2022-07-12 10:14:36,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 261 flow [2022-07-12 10:14:36,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:14:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:14:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 572 transitions. [2022-07-12 10:14:36,269 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7782312925170068 [2022-07-12 10:14:36,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 572 transitions. [2022-07-12 10:14:36,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 572 transitions. [2022-07-12 10:14:36,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:14:36,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 572 transitions. [2022-07-12 10:14:36,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.71428571428571) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,288 INFO L186 Difference]: Start difference. First operand has 96 places, 96 transitions, 195 flow. Second operand 7 states and 572 transitions. [2022-07-12 10:14:36,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 98 transitions, 261 flow [2022-07-12 10:14:36,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 98 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:14:36,296 INFO L242 Difference]: Finished difference. Result has 96 places, 88 transitions, 201 flow [2022-07-12 10:14:36,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2022-07-12 10:14:36,300 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 0 predicate places. [2022-07-12 10:14:36,301 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 201 flow [2022-07-12 10:14:36,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,301 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:14:36,302 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:14:36,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:14:36,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:14:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:14:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1221049129, now seen corresponding path program 1 times [2022-07-12 10:14:36,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:14:36,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039113337] [2022-07-12 10:14:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:14:36,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:14:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:14:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:14:36,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:14:36,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039113337] [2022-07-12 10:14:36,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039113337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:14:36,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:14:36,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:14:36,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910970637] [2022-07-12 10:14:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:14:36,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:14:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:14:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:14:36,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:14:36,468 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 105 [2022-07-12 10:14:36,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:14:36,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 105 [2022-07-12 10:14:36,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:14:36,769 INFO L129 PetriNetUnfolder]: 99/483 cut-off events. [2022-07-12 10:14:36,769 INFO L130 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-07-12 10:14:36,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 483 events. 99/483 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2754 event pairs, 31 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 762. Up to 69 conditions per place. [2022-07-12 10:14:36,782 INFO L132 encePairwiseOnDemand]: 92/105 looper letters, 51 selfloop transitions, 19 changer transitions 2/136 dead transitions. [2022-07-12 10:14:36,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 136 transitions, 470 flow [2022-07-12 10:14:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:14:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:14:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 962 transitions. [2022-07-12 10:14:36,788 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-07-12 10:14:36,788 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 962 transitions. [2022-07-12 10:14:36,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 962 transitions. [2022-07-12 10:14:36,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:14:36,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 962 transitions. [2022-07-12 10:14:36,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 80.16666666666667) internal successors, (962), 12 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,796 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,796 INFO L186 Difference]: Start difference. First operand has 96 places, 88 transitions, 201 flow. Second operand 12 states and 962 transitions. [2022-07-12 10:14:36,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 136 transitions, 470 flow [2022-07-12 10:14:36,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 136 transitions, 442 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:14:36,803 INFO L242 Difference]: Finished difference. Result has 108 places, 102 transitions, 304 flow [2022-07-12 10:14:36,803 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=304, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2022-07-12 10:14:36,804 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 12 predicate places. [2022-07-12 10:14:36,804 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 304 flow [2022-07-12 10:14:36,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,804 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:14:36,805 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:14:36,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:14:36,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:14:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:14:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash 886861433, now seen corresponding path program 1 times [2022-07-12 10:14:36,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:14:36,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180739883] [2022-07-12 10:14:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:14:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:14:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:14:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:14:36,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:14:36,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180739883] [2022-07-12 10:14:36,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180739883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:14:36,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:14:36,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:14:36,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319898520] [2022-07-12 10:14:36,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:14:36,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:14:36,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:14:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:14:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:14:36,916 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 105 [2022-07-12 10:14:36,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:36,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:14:36,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 105 [2022-07-12 10:14:36,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:14:37,144 INFO L129 PetriNetUnfolder]: 94/585 cut-off events. [2022-07-12 10:14:37,144 INFO L130 PetriNetUnfolder]: For 281/305 co-relation queries the response was YES. [2022-07-12 10:14:37,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 585 events. 94/585 cut-off events. For 281/305 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3995 event pairs, 3 based on Foata normal form. 10/583 useless extension candidates. Maximal degree in co-relation 1089. Up to 96 conditions per place. [2022-07-12 10:14:37,148 INFO L132 encePairwiseOnDemand]: 91/105 looper letters, 46 selfloop transitions, 26 changer transitions 4/148 dead transitions. [2022-07-12 10:14:37,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 148 transitions, 655 flow [2022-07-12 10:14:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:14:37,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:14:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2022-07-12 10:14:37,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7509157509157509 [2022-07-12 10:14:37,152 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2022-07-12 10:14:37,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2022-07-12 10:14:37,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:14:37,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2022-07-12 10:14:37,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,161 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,161 INFO L186 Difference]: Start difference. First operand has 108 places, 102 transitions, 304 flow. Second operand 13 states and 1025 transitions. [2022-07-12 10:14:37,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 148 transitions, 655 flow [2022-07-12 10:14:37,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 148 transitions, 651 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-07-12 10:14:37,171 INFO L242 Difference]: Finished difference. Result has 127 places, 119 transitions, 478 flow [2022-07-12 10:14:37,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=478, PETRI_PLACES=127, PETRI_TRANSITIONS=119} [2022-07-12 10:14:37,174 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 31 predicate places. [2022-07-12 10:14:37,174 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 119 transitions, 478 flow [2022-07-12 10:14:37,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,175 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:14:37,175 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:14:37,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:14:37,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:14:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:14:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash -482767075, now seen corresponding path program 1 times [2022-07-12 10:14:37,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:14:37,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848054481] [2022-07-12 10:14:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:14:37,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:14:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:14:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:14:37,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:14:37,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848054481] [2022-07-12 10:14:37,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848054481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:14:37,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:14:37,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:14:37,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613275588] [2022-07-12 10:14:37,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:14:37,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:14:37,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:14:37,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:14:37,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:14:37,267 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 105 [2022-07-12 10:14:37,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 119 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:14:37,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 105 [2022-07-12 10:14:37,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:14:37,293 INFO L129 PetriNetUnfolder]: 0/124 cut-off events. [2022-07-12 10:14:37,294 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-07-12 10:14:37,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 124 events. 0/124 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 2/126 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-07-12 10:14:37,294 INFO L132 encePairwiseOnDemand]: 101/105 looper letters, 7 selfloop transitions, 4 changer transitions 4/103 dead transitions. [2022-07-12 10:14:37,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 103 transitions, 374 flow [2022-07-12 10:14:37,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:14:37,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:14:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-07-12 10:14:37,296 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8507936507936508 [2022-07-12 10:14:37,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2022-07-12 10:14:37,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2022-07-12 10:14:37,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:14:37,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2022-07-12 10:14:37,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,298 INFO L186 Difference]: Start difference. First operand has 127 places, 119 transitions, 478 flow. Second operand 3 states and 268 transitions. [2022-07-12 10:14:37,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 103 transitions, 374 flow [2022-07-12 10:14:37,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 103 transitions, 340 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-07-12 10:14:37,302 INFO L242 Difference]: Finished difference. Result has 118 places, 99 transitions, 308 flow [2022-07-12 10:14:37,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=308, PETRI_PLACES=118, PETRI_TRANSITIONS=99} [2022-07-12 10:14:37,303 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 22 predicate places. [2022-07-12 10:14:37,303 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 99 transitions, 308 flow [2022-07-12 10:14:37,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,303 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:14:37,304 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:14:37,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:14:37,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:14:37,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:14:37,304 INFO L85 PathProgramCache]: Analyzing trace with hash -33373823, now seen corresponding path program 1 times [2022-07-12 10:14:37,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:14:37,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121986786] [2022-07-12 10:14:37,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:14:37,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:14:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:14:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:14:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:14:37,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121986786] [2022-07-12 10:14:37,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121986786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:14:37,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:14:37,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:14:37,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597185815] [2022-07-12 10:14:37,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:14:37,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:14:37,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:14:37,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:14:37,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:14:37,348 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 105 [2022-07-12 10:14:37,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 99 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:14:37,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 105 [2022-07-12 10:14:37,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:14:37,419 INFO L129 PetriNetUnfolder]: 0/107 cut-off events. [2022-07-12 10:14:37,419 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-07-12 10:14:37,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 107 events. 0/107 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2022-07-12 10:14:37,420 INFO L132 encePairwiseOnDemand]: 98/105 looper letters, 20 selfloop transitions, 6 changer transitions 4/97 dead transitions. [2022-07-12 10:14:37,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 97 transitions, 364 flow [2022-07-12 10:14:37,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:14:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:14:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2022-07-12 10:14:37,422 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.746938775510204 [2022-07-12 10:14:37,422 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2022-07-12 10:14:37,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2022-07-12 10:14:37,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:14:37,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2022-07-12 10:14:37,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,426 INFO L186 Difference]: Start difference. First operand has 118 places, 99 transitions, 308 flow. Second operand 7 states and 549 transitions. [2022-07-12 10:14:37,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 97 transitions, 364 flow [2022-07-12 10:14:37,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 97 transitions, 355 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:14:37,429 INFO L242 Difference]: Finished difference. Result has 120 places, 93 transitions, 289 flow [2022-07-12 10:14:37,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=289, PETRI_PLACES=120, PETRI_TRANSITIONS=93} [2022-07-12 10:14:37,430 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 24 predicate places. [2022-07-12 10:14:37,430 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 93 transitions, 289 flow [2022-07-12 10:14:37,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,431 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:14:37,431 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:14:37,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:14:37,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:14:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:14:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1859041644, now seen corresponding path program 1 times [2022-07-12 10:14:37,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:14:37,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560300014] [2022-07-12 10:14:37,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:14:37,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:14:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:14:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:14:37,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:14:37,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560300014] [2022-07-12 10:14:37,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560300014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:14:37,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:14:37,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:14:37,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547939868] [2022-07-12 10:14:37,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:14:37,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:14:37,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:14:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:14:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:14:37,581 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 105 [2022-07-12 10:14:37,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 93 transitions, 289 flow. Second operand has 9 states, 9 states have (on average 72.88888888888889) internal successors, (656), 9 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:14:37,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 105 [2022-07-12 10:14:37,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:14:37,805 INFO L129 PetriNetUnfolder]: 7/117 cut-off events. [2022-07-12 10:14:37,805 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-07-12 10:14:37,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 117 events. 7/117 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 134 event pairs, 1 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-07-12 10:14:37,806 INFO L132 encePairwiseOnDemand]: 89/105 looper letters, 8 selfloop transitions, 12 changer transitions 21/96 dead transitions. [2022-07-12 10:14:37,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 96 transitions, 363 flow [2022-07-12 10:14:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:14:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:14:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1311 transitions. [2022-07-12 10:14:37,811 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6936507936507936 [2022-07-12 10:14:37,811 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1311 transitions. [2022-07-12 10:14:37,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1311 transitions. [2022-07-12 10:14:37,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:14:37,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1311 transitions. [2022-07-12 10:14:37,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.83333333333333) internal successors, (1311), 18 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,820 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,820 INFO L186 Difference]: Start difference. First operand has 120 places, 93 transitions, 289 flow. Second operand 18 states and 1311 transitions. [2022-07-12 10:14:37,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 96 transitions, 363 flow [2022-07-12 10:14:37,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 96 transitions, 337 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-12 10:14:37,825 INFO L242 Difference]: Finished difference. Result has 123 places, 75 transitions, 216 flow [2022-07-12 10:14:37,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=216, PETRI_PLACES=123, PETRI_TRANSITIONS=75} [2022-07-12 10:14:37,827 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 27 predicate places. [2022-07-12 10:14:37,827 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 75 transitions, 216 flow [2022-07-12 10:14:37,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.88888888888889) internal successors, (656), 9 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,828 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:14:37,828 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:14:37,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:14:37,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:14:37,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:14:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2087054869, now seen corresponding path program 1 times [2022-07-12 10:14:37,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:14:37,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135900966] [2022-07-12 10:14:37,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:14:37,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:14:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:14:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:14:37,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:14:37,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135900966] [2022-07-12 10:14:37,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135900966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:14:37,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:14:37,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:14:37,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525415521] [2022-07-12 10:14:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:14:37,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:14:37,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:14:37,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:14:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:14:37,966 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 105 [2022-07-12 10:14:37,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 75 transitions, 216 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:37,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:14:37,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 105 [2022-07-12 10:14:37,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:14:38,109 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2022-07-12 10:14:38,109 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-07-12 10:14:38,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 75 events. 0/75 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-07-12 10:14:38,110 INFO L132 encePairwiseOnDemand]: 93/105 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2022-07-12 10:14:38,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 73 transitions, 248 flow [2022-07-12 10:14:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:14:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:14:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 812 transitions. [2022-07-12 10:14:38,113 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.703030303030303 [2022-07-12 10:14:38,113 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 812 transitions. [2022-07-12 10:14:38,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 812 transitions. [2022-07-12 10:14:38,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:14:38,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 812 transitions. [2022-07-12 10:14:38,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.81818181818181) internal successors, (812), 11 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:38,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:38,119 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:38,119 INFO L186 Difference]: Start difference. First operand has 123 places, 75 transitions, 216 flow. Second operand 11 states and 812 transitions. [2022-07-12 10:14:38,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 73 transitions, 248 flow [2022-07-12 10:14:38,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 73 transitions, 193 flow, removed 4 selfloop flow, removed 24 redundant places. [2022-07-12 10:14:38,121 INFO L242 Difference]: Finished difference. Result has 91 places, 0 transitions, 0 flow [2022-07-12 10:14:38,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=91, PETRI_TRANSITIONS=0} [2022-07-12 10:14:38,122 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -5 predicate places. [2022-07-12 10:14:38,122 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 0 transitions, 0 flow [2022-07-12 10:14:38,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:14:38,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-07-12 10:14:38,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-12 10:14:38,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-07-12 10:14:38,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-12 10:14:38,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-12 10:14:38,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-12 10:14:38,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-12 10:14:38,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:14:38,129 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:14:38,133 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:14:38,133 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:14:38,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:14:38 BasicIcfg [2022-07-12 10:14:38,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:14:38,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:14:38,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:14:38,142 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:14:38,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:14:35" (3/4) ... [2022-07-12 10:14:38,144 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:14:38,150 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-12 10:14:38,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-12 10:14:38,154 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 10:14:38,155 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:14:38,155 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:14:38,196 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:14:38,196 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:14:38,197 INFO L158 Benchmark]: Toolchain (without parser) took 3589.79ms. Allocated memory was 90.2MB in the beginning and 142.6MB in the end (delta: 52.4MB). Free memory was 53.1MB in the beginning and 100.9MB in the end (delta: -47.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:14:38,198 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:14:38,198 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.96ms. Allocated memory is still 90.2MB. Free memory was 52.8MB in the beginning and 54.7MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 10:14:38,198 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.91ms. Allocated memory is still 90.2MB. Free memory was 54.7MB in the beginning and 52.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:14:38,198 INFO L158 Benchmark]: Boogie Preprocessor took 20.83ms. Allocated memory is still 90.2MB. Free memory was 52.6MB in the beginning and 51.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:14:38,199 INFO L158 Benchmark]: RCFGBuilder took 436.43ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 89.0MB in the end (delta: -37.8MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2022-07-12 10:14:38,199 INFO L158 Benchmark]: TraceAbstraction took 2594.09ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 88.5MB in the beginning and 104.0MB in the end (delta: -15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-12 10:14:38,199 INFO L158 Benchmark]: Witness Printer took 54.91ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 100.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:14:38,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 90.2MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.96ms. Allocated memory is still 90.2MB. Free memory was 52.8MB in the beginning and 54.7MB in the end (delta: -1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.91ms. Allocated memory is still 90.2MB. Free memory was 54.7MB in the beginning and 52.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.83ms. Allocated memory is still 90.2MB. Free memory was 52.6MB in the beginning and 51.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 436.43ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 89.0MB in the end (delta: -37.8MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2594.09ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 88.5MB in the beginning and 104.0MB in the end (delta: -15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 54.91ms. Allocated memory is still 142.6MB. Free memory was 104.0MB in the beginning and 100.9MB 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: - 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 - 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, 132 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: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 331 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 234 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353 IncrementalHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 106 mSDtfsCounter, 353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=478occurred in iteration=3, 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, 0.7s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 1653 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:14:38,241 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