./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_24-multiple-protecting_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 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:17:00,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:17:00,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:17:00,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:17:00,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:17:00,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:17:00,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:17:00,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:17:00,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:17:00,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:17:00,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:17:00,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:17:00,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:17:00,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:17:00,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:17:00,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:17:00,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:17:00,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:17:00,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:17:00,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:17:00,378 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:17:00,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:17:00,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:17:00,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:17:00,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:17:00,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:17:00,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:17:00,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:17:00,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:17:00,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:17:00,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:17:00,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:17:00,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:17:00,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:17:00,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:17:00,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:17:00,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:17:00,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:17:00,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:17:00,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:17:00,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:17:00,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:17:00,397 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:17:00,423 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:17:00,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:17:00,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:17:00,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:17:00,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:17:00,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:17:00,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:17:00,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:17:00,425 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:17:00,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:17:00,426 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:17:00,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:17:00,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:17:00,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:17:00,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:17:00,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:17:00,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:17:00,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:17:00,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:17:00,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:17:00,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:17:00,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:17:00,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:17:00,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:17:00,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:17:00,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:17:00,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:17:00,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:17:00,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:17:00,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:17:00,429 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:17:00,429 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:17:00,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:17:00,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a41a1715a056c3cefb9e5b0430ae444adde5aa2f4e6078578085bf381d921cf [2022-07-19 21:17:00,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:17:00,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:17:00,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:17:00,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:17:00,709 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:17:00,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-07-19 21:17:00,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219af1c58/f62e659af18b40ec84680301d9bc8bde/FLAG52cb93645 [2022-07-19 21:17:01,207 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:17:01,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-07-19 21:17:01,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219af1c58/f62e659af18b40ec84680301d9bc8bde/FLAG52cb93645 [2022-07-19 21:17:01,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/219af1c58/f62e659af18b40ec84680301d9bc8bde [2022-07-19 21:17:01,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:17:01,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:17:01,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:17:01,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:17:01,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:17:01,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:17:01" (1/1) ... [2022-07-19 21:17:01,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d927a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:01, skipping insertion in model container [2022-07-19 21:17:01,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:17:01" (1/1) ... [2022-07-19 21:17:01,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:17:01,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:17:01,918 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_24-multiple-protecting_true.i[1096,1109] [2022-07-19 21:17:02,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:17:02,063 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:17:02,074 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_24-multiple-protecting_true.i[1096,1109] [2022-07-19 21:17:02,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:17:02,141 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:17:02,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02 WrapperNode [2022-07-19 21:17:02,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:17:02,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:17:02,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:17:02,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:17:02,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,196 INFO L137 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2022-07-19 21:17:02,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:17:02,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:17:02,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:17:02,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:17:02,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:17:02,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:17:02,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:17:02,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:17:02,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (1/1) ... [2022-07-19 21:17:02,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:17:02,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:17:02,269 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) [2022-07-19 21:17:02,287 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 [2022-07-19 21:17:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:17:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:17:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:17:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:17:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:17:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-19 21:17:02,303 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-19 21:17:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:17:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:17:02,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:17:02,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:17:02,304 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:17:02,371 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:17:02,372 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:17:02,535 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:17:02,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:17:02,541 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:17:02,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:17:02 BoogieIcfgContainer [2022-07-19 21:17:02,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:17:02,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:17:02,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:17:02,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:17:02,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:17:01" (1/3) ... [2022-07-19 21:17:02,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4a0e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:17:02, skipping insertion in model container [2022-07-19 21:17:02,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:02" (2/3) ... [2022-07-19 21:17:02,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4a0e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:17:02, skipping insertion in model container [2022-07-19 21:17:02,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:17:02" (3/3) ... [2022-07-19 21:17:02,550 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2022-07-19 21:17:02,558 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:17:02,565 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:17:02,565 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-19 21:17:02,566 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:17:02,630 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-19 21:17:02,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 143 places, 143 transitions, 294 flow [2022-07-19 21:17:02,747 INFO L129 PetriNetUnfolder]: 4/142 cut-off events. [2022-07-19 21:17:02,748 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:17:02,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 142 events. 4/142 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-07-19 21:17:02,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 143 transitions, 294 flow [2022-07-19 21:17:02,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 127 transitions, 257 flow [2022-07-19 21:17:02,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:17:02,774 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@1ade6aa0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@39343a1e [2022-07-19 21:17:02,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 21:17:02,795 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2022-07-19 21:17:02,796 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:17:02,796 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:02,796 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] [2022-07-19 21:17:02,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:17:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:02,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1006366235, now seen corresponding path program 1 times [2022-07-19 21:17:02,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:02,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169024484] [2022-07-19 21:17:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:03,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:03,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169024484] [2022-07-19 21:17:03,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169024484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:03,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:03,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:17:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566031223] [2022-07-19 21:17:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:03,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:17:03,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:03,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:17:03,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:17:03,185 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 143 [2022-07-19 21:17:03,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:03,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 143 [2022-07-19 21:17:03,189 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:03,439 INFO L129 PetriNetUnfolder]: 89/691 cut-off events. [2022-07-19 21:17:03,440 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:17:03,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 691 events. 89/691 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3820 event pairs, 23 based on Foata normal form. 16/692 useless extension candidates. Maximal degree in co-relation 866. Up to 72 conditions per place. [2022-07-19 21:17:03,444 INFO L132 encePairwiseOnDemand]: 122/143 looper letters, 35 selfloop transitions, 23 changer transitions 5/159 dead transitions. [2022-07-19 21:17:03,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 159 transitions, 447 flow [2022-07-19 21:17:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:17:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:17:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2022-07-19 21:17:03,465 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.811965811965812 [2022-07-19 21:17:03,465 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2022-07-19 21:17:03,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2022-07-19 21:17:03,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:03,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2022-07-19 21:17:03,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.11111111111111) internal successors, (1045), 9 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,485 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,486 INFO L186 Difference]: Start difference. First operand has 128 places, 127 transitions, 257 flow. Second operand 9 states and 1045 transitions. [2022-07-19 21:17:03,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 159 transitions, 447 flow [2022-07-19 21:17:03,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 159 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:17:03,494 INFO L242 Difference]: Finished difference. Result has 139 places, 138 transitions, 393 flow [2022-07-19 21:17:03,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=393, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2022-07-19 21:17:03,501 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, 11 predicate places. [2022-07-19 21:17:03,501 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 393 flow [2022-07-19 21:17:03,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,502 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:03,502 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] [2022-07-19 21:17:03,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:17:03,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:17:03,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:03,503 INFO L85 PathProgramCache]: Analyzing trace with hash -892505284, now seen corresponding path program 1 times [2022-07-19 21:17:03,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:03,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758040594] [2022-07-19 21:17:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:03,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:03,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:03,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758040594] [2022-07-19 21:17:03,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758040594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:03,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:03,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:17:03,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661197177] [2022-07-19 21:17:03,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:03,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:17:03,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:17:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:17:03,711 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 143 [2022-07-19 21:17:03,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 138 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:03,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 143 [2022-07-19 21:17:03,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:03,881 INFO L129 PetriNetUnfolder]: 67/542 cut-off events. [2022-07-19 21:17:03,881 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-07-19 21:17:03,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 542 events. 67/542 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2508 event pairs, 28 based on Foata normal form. 13/547 useless extension candidates. Maximal degree in co-relation 836. Up to 124 conditions per place. [2022-07-19 21:17:03,890 INFO L132 encePairwiseOnDemand]: 136/143 looper letters, 43 selfloop transitions, 7 changer transitions 0/146 dead transitions. [2022-07-19 21:17:03,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 146 transitions, 483 flow [2022-07-19 21:17:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:17:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:17:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2022-07-19 21:17:03,892 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7510489510489511 [2022-07-19 21:17:03,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2022-07-19 21:17:03,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2022-07-19 21:17:03,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:03,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2022-07-19 21:17:03,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,895 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,896 INFO L186 Difference]: Start difference. First operand has 139 places, 138 transitions, 393 flow. Second operand 5 states and 537 transitions. [2022-07-19 21:17:03,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 146 transitions, 483 flow [2022-07-19 21:17:03,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 146 transitions, 465 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-07-19 21:17:03,906 INFO L242 Difference]: Finished difference. Result has 139 places, 133 transitions, 362 flow [2022-07-19 21:17:03,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=139, PETRI_TRANSITIONS=133} [2022-07-19 21:17:03,907 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, 11 predicate places. [2022-07-19 21:17:03,907 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 133 transitions, 362 flow [2022-07-19 21:17:03,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.83333333333333) internal successors, (599), 6 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:03,908 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:03,908 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] [2022-07-19 21:17:03,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:17:03,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:17:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:03,910 INFO L85 PathProgramCache]: Analyzing trace with hash -781067283, now seen corresponding path program 1 times [2022-07-19 21:17:03,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:03,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340704737] [2022-07-19 21:17:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:03,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:04,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:04,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340704737] [2022-07-19 21:17:04,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340704737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:04,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:04,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:17:04,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538268187] [2022-07-19 21:17:04,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:17:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:17:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:17:04,056 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 143 [2022-07-19 21:17:04,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 133 transitions, 362 flow. Second operand has 8 states, 8 states have (on average 107.5) internal successors, (860), 8 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:04,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 143 [2022-07-19 21:17:04,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:04,281 INFO L129 PetriNetUnfolder]: 20/344 cut-off events. [2022-07-19 21:17:04,281 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-07-19 21:17:04,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 344 events. 20/344 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1046 event pairs, 1 based on Foata normal form. 8/352 useless extension candidates. Maximal degree in co-relation 494. Up to 23 conditions per place. [2022-07-19 21:17:04,282 INFO L132 encePairwiseOnDemand]: 123/143 looper letters, 22 selfloop transitions, 31 changer transitions 10/156 dead transitions. [2022-07-19 21:17:04,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 156 transitions, 554 flow [2022-07-19 21:17:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:17:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:17:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1965 transitions. [2022-07-19 21:17:04,287 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634032634032634 [2022-07-19 21:17:04,287 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1965 transitions. [2022-07-19 21:17:04,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1965 transitions. [2022-07-19 21:17:04,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:04,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1965 transitions. [2022-07-19 21:17:04,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 109.16666666666667) internal successors, (1965), 18 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 143.0) internal successors, (2717), 19 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,296 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 143.0) internal successors, (2717), 19 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,297 INFO L186 Difference]: Start difference. First operand has 139 places, 133 transitions, 362 flow. Second operand 18 states and 1965 transitions. [2022-07-19 21:17:04,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 156 transitions, 554 flow [2022-07-19 21:17:04,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 547 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-19 21:17:04,303 INFO L242 Difference]: Finished difference. Result has 155 places, 136 transitions, 465 flow [2022-07-19 21:17:04,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=465, PETRI_PLACES=155, PETRI_TRANSITIONS=136} [2022-07-19 21:17:04,305 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, 27 predicate places. [2022-07-19 21:17:04,305 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 136 transitions, 465 flow [2022-07-19 21:17:04,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.5) internal successors, (860), 8 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,306 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:04,306 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] [2022-07-19 21:17:04,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:17:04,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:17:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash 871628872, now seen corresponding path program 1 times [2022-07-19 21:17:04,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:04,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521215551] [2022-07-19 21:17:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:04,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:04,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:04,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521215551] [2022-07-19 21:17:04,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521215551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:04,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:04,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:17:04,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953947739] [2022-07-19 21:17:04,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:04,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:17:04,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:04,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:17:04,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:17:04,386 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 143 [2022-07-19 21:17:04,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 136 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:04,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 143 [2022-07-19 21:17:04,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:04,483 INFO L129 PetriNetUnfolder]: 65/535 cut-off events. [2022-07-19 21:17:04,484 INFO L130 PetriNetUnfolder]: For 306/307 co-relation queries the response was YES. [2022-07-19 21:17:04,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 535 events. 65/535 cut-off events. For 306/307 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2410 event pairs, 13 based on Foata normal form. 7/538 useless extension candidates. Maximal degree in co-relation 959. Up to 75 conditions per place. [2022-07-19 21:17:04,486 INFO L132 encePairwiseOnDemand]: 132/143 looper letters, 28 selfloop transitions, 23 changer transitions 12/164 dead transitions. [2022-07-19 21:17:04,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 164 transitions, 709 flow [2022-07-19 21:17:04,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:17:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:17:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1025 transitions. [2022-07-19 21:17:04,492 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7964257964257965 [2022-07-19 21:17:04,492 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1025 transitions. [2022-07-19 21:17:04,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1025 transitions. [2022-07-19 21:17:04,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:04,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1025 transitions. [2022-07-19 21:17:04,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.88888888888889) internal successors, (1025), 9 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) [2022-07-19 21:17:04,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,496 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,497 INFO L186 Difference]: Start difference. First operand has 155 places, 136 transitions, 465 flow. Second operand 9 states and 1025 transitions. [2022-07-19 21:17:04,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 164 transitions, 709 flow [2022-07-19 21:17:04,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 164 transitions, 628 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-07-19 21:17:04,501 INFO L242 Difference]: Finished difference. Result has 155 places, 142 transitions, 511 flow [2022-07-19 21:17:04,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=511, PETRI_PLACES=155, PETRI_TRANSITIONS=142} [2022-07-19 21:17:04,502 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, 27 predicate places. [2022-07-19 21:17:04,503 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 142 transitions, 511 flow [2022-07-19 21:17:04,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,503 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:04,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:04,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:17:04,504 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:17:04,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2129150076, now seen corresponding path program 1 times [2022-07-19 21:17:04,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:04,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183406157] [2022-07-19 21:17:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:04,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:04,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:04,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183406157] [2022-07-19 21:17:04,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183406157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:04,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:04,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:17:04,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488931297] [2022-07-19 21:17:04,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:04,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:17:04,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:04,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:17:04,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:17:04,659 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 143 [2022-07-19 21:17:04,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 142 transitions, 511 flow. Second operand has 8 states, 8 states have (on average 94.875) internal successors, (759), 8 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:04,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 143 [2022-07-19 21:17:04,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:04,790 INFO L129 PetriNetUnfolder]: 45/393 cut-off events. [2022-07-19 21:17:04,790 INFO L130 PetriNetUnfolder]: For 126/127 co-relation queries the response was YES. [2022-07-19 21:17:04,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 393 events. 45/393 cut-off events. For 126/127 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1557 event pairs, 6 based on Foata normal form. 2/393 useless extension candidates. Maximal degree in co-relation 751. Up to 118 conditions per place. [2022-07-19 21:17:04,798 INFO L132 encePairwiseOnDemand]: 137/143 looper letters, 38 selfloop transitions, 6 changer transitions 16/131 dead transitions. [2022-07-19 21:17:04,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 131 transitions, 512 flow [2022-07-19 21:17:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:17:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:17:04,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2022-07-19 21:17:04,800 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2022-07-19 21:17:04,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2022-07-19 21:17:04,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2022-07-19 21:17:04,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:04,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2022-07-19 21:17:04,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,803 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 143.0) internal successors, (1001), 7 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,803 INFO L186 Difference]: Start difference. First operand has 155 places, 142 transitions, 511 flow. Second operand 6 states and 594 transitions. [2022-07-19 21:17:04,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 131 transitions, 512 flow [2022-07-19 21:17:04,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 131 transitions, 482 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-07-19 21:17:04,807 INFO L242 Difference]: Finished difference. Result has 140 places, 110 transitions, 316 flow [2022-07-19 21:17:04,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=140, PETRI_TRANSITIONS=110} [2022-07-19 21:17:04,807 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, 12 predicate places. [2022-07-19 21:17:04,808 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 110 transitions, 316 flow [2022-07-19 21:17:04,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 94.875) internal successors, (759), 8 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,808 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:04,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:04,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:17:04,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:17:04,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:04,809 INFO L85 PathProgramCache]: Analyzing trace with hash 690880209, now seen corresponding path program 1 times [2022-07-19 21:17:04,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:04,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249411535] [2022-07-19 21:17:04,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:04,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:04,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:04,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249411535] [2022-07-19 21:17:04,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249411535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:04,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:04,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:17:04,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083005453] [2022-07-19 21:17:04,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:04,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:17:04,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:04,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:17:04,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:17:04,872 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 143 [2022-07-19 21:17:04,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 110 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:04,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 143 [2022-07-19 21:17:04,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:04,950 INFO L129 PetriNetUnfolder]: 24/328 cut-off events. [2022-07-19 21:17:04,950 INFO L130 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2022-07-19 21:17:04,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 328 events. 24/328 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1081 event pairs, 12 based on Foata normal form. 12/340 useless extension candidates. Maximal degree in co-relation 579. Up to 60 conditions per place. [2022-07-19 21:17:04,952 INFO L132 encePairwiseOnDemand]: 127/143 looper letters, 23 selfloop transitions, 16 changer transitions 0/116 dead transitions. [2022-07-19 21:17:04,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 116 transitions, 414 flow [2022-07-19 21:17:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:17:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:17:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 528 transitions. [2022-07-19 21:17:04,953 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2022-07-19 21:17:04,954 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 528 transitions. [2022-07-19 21:17:04,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 528 transitions. [2022-07-19 21:17:04,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:04,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 528 transitions. [2022-07-19 21:17:04,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,957 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,957 INFO L186 Difference]: Start difference. First operand has 140 places, 110 transitions, 316 flow. Second operand 5 states and 528 transitions. [2022-07-19 21:17:04,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 116 transitions, 414 flow [2022-07-19 21:17:04,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 116 transitions, 361 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-07-19 21:17:04,960 INFO L242 Difference]: Finished difference. Result has 123 places, 113 transitions, 326 flow [2022-07-19 21:17:04,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=123, PETRI_TRANSITIONS=113} [2022-07-19 21:17:04,963 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -5 predicate places. [2022-07-19 21:17:04,963 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 113 transitions, 326 flow [2022-07-19 21:17:04,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:04,963 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:04,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:04,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:17:04,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:17:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2098980044, now seen corresponding path program 1 times [2022-07-19 21:17:04,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:04,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537251435] [2022-07-19 21:17:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:04,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:05,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:05,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537251435] [2022-07-19 21:17:05,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537251435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:05,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:05,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:17:05,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901926676] [2022-07-19 21:17:05,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:05,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:17:05,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:05,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:17:05,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:17:05,101 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 143 [2022-07-19 21:17:05,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 113 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:05,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 143 [2022-07-19 21:17:05,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:05,173 INFO L129 PetriNetUnfolder]: 11/225 cut-off events. [2022-07-19 21:17:05,173 INFO L130 PetriNetUnfolder]: For 74/76 co-relation queries the response was YES. [2022-07-19 21:17:05,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 225 events. 11/225 cut-off events. For 74/76 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 501 event pairs, 0 based on Foata normal form. 11/236 useless extension candidates. Maximal degree in co-relation 405. Up to 39 conditions per place. [2022-07-19 21:17:05,174 INFO L132 encePairwiseOnDemand]: 138/143 looper letters, 31 selfloop transitions, 7 changer transitions 2/115 dead transitions. [2022-07-19 21:17:05,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 115 transitions, 413 flow [2022-07-19 21:17:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:17:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:17:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2022-07-19 21:17:05,176 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.73006993006993 [2022-07-19 21:17:05,176 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2022-07-19 21:17:05,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2022-07-19 21:17:05,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:05,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2022-07-19 21:17:05,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,179 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,179 INFO L186 Difference]: Start difference. First operand has 123 places, 113 transitions, 326 flow. Second operand 5 states and 522 transitions. [2022-07-19 21:17:05,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 115 transitions, 413 flow [2022-07-19 21:17:05,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 115 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:17:05,182 INFO L242 Difference]: Finished difference. Result has 125 places, 110 transitions, 323 flow [2022-07-19 21:17:05,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=125, PETRI_TRANSITIONS=110} [2022-07-19 21:17:05,183 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -3 predicate places. [2022-07-19 21:17:05,183 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 110 transitions, 323 flow [2022-07-19 21:17:05,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,184 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:05,184 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, 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] [2022-07-19 21:17:05,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:17:05,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 21:17:05,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:05,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1107468195, now seen corresponding path program 1 times [2022-07-19 21:17:05,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:05,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308489251] [2022-07-19 21:17:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:05,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:05,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:05,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308489251] [2022-07-19 21:17:05,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308489251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:05,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:05,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:17:05,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787176472] [2022-07-19 21:17:05,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:05,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:17:05,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:17:05,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:17:05,300 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 143 [2022-07-19 21:17:05,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 110 transitions, 323 flow. Second operand has 8 states, 8 states have (on average 108.5) internal successors, (868), 8 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:05,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 143 [2022-07-19 21:17:05,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:05,421 INFO L129 PetriNetUnfolder]: 4/191 cut-off events. [2022-07-19 21:17:05,422 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-07-19 21:17:05,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 191 events. 4/191 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 334 event pairs, 1 based on Foata normal form. 2/193 useless extension candidates. Maximal degree in co-relation 335. Up to 19 conditions per place. [2022-07-19 21:17:05,422 INFO L132 encePairwiseOnDemand]: 129/143 looper letters, 0 selfloop transitions, 0 changer transitions 117/117 dead transitions. [2022-07-19 21:17:05,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 117 transitions, 401 flow [2022-07-19 21:17:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:17:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:17:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1726 transitions. [2022-07-19 21:17:05,426 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7543706293706294 [2022-07-19 21:17:05,426 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1726 transitions. [2022-07-19 21:17:05,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1726 transitions. [2022-07-19 21:17:05,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:05,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1726 transitions. [2022-07-19 21:17:05,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 107.875) internal successors, (1726), 16 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 143.0) internal successors, (2431), 17 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,432 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 143.0) internal successors, (2431), 17 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,432 INFO L186 Difference]: Start difference. First operand has 125 places, 110 transitions, 323 flow. Second operand 16 states and 1726 transitions. [2022-07-19 21:17:05,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 117 transitions, 401 flow [2022-07-19 21:17:05,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 117 transitions, 389 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-07-19 21:17:05,434 INFO L242 Difference]: Finished difference. Result has 134 places, 0 transitions, 0 flow [2022-07-19 21:17:05,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=134, PETRI_TRANSITIONS=0} [2022-07-19 21:17:05,435 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, 6 predicate places. [2022-07-19 21:17:05,435 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 0 transitions, 0 flow [2022-07-19 21:17:05,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.5) internal successors, (868), 8 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:05,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-19 21:17:05,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-19 21:17:05,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-07-19 21:17:05,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-19 21:17:05,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-19 21:17:05,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:17:05,439 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:05,442 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:17:05,442 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:17:05,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:17:05 BasicIcfg [2022-07-19 21:17:05,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:17:05,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:17:05,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:17:05,446 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:17:05,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:17:02" (3/4) ... [2022-07-19 21:17:05,449 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:17:05,453 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-19 21:17:05,456 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-19 21:17:05,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:17:05,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:17:05,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:17:05,479 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:17:05,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:17:05,480 INFO L158 Benchmark]: Toolchain (without parser) took 3738.82ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 52.2MB in the beginning and 40.7MB in the end (delta: 11.5MB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. [2022-07-19 21:17:05,480 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:17:05,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.69ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 72.4MB in the end (delta: -20.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:17:05,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.42ms. Allocated memory is still 107.0MB. Free memory was 72.4MB in the beginning and 70.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:17:05,481 INFO L158 Benchmark]: Boogie Preprocessor took 34.58ms. Allocated memory is still 107.0MB. Free memory was 70.1MB in the beginning and 68.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:17:05,481 INFO L158 Benchmark]: RCFGBuilder took 311.17ms. Allocated memory is still 107.0MB. Free memory was 68.8MB in the beginning and 54.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-19 21:17:05,482 INFO L158 Benchmark]: TraceAbstraction took 2901.39ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 54.1MB in the beginning and 43.9MB in the end (delta: 10.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-07-19 21:17:05,482 INFO L158 Benchmark]: Witness Printer took 33.83ms. Allocated memory is still 130.0MB. Free memory was 43.9MB in the beginning and 40.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:17:05,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.69ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 72.4MB in the end (delta: -20.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.42ms. Allocated memory is still 107.0MB. Free memory was 72.4MB in the beginning and 70.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.58ms. Allocated memory is still 107.0MB. Free memory was 70.1MB in the beginning and 68.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.17ms. Allocated memory is still 107.0MB. Free memory was 68.8MB in the beginning and 54.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2901.39ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 54.1MB in the beginning and 43.9MB in the end (delta: 10.3MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Witness Printer took 33.83ms. Allocated memory is still 130.0MB. Free memory was 43.9MB in the beginning and 40.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 175 locations, 5 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: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 297 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 297 mSDsluCounter, 335 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 246 mSDsCounter, 244 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 584 IncrementalHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 244 mSolverCounterUnsat, 104 mSDtfsCounter, 584 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=511occurred in iteration=4, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 633 NumberOfCodeBlocks, 633 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 625 ConstructedInterpolants, 0 QuantifiedInterpolants, 2505 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 21:17:05,526 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