./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_47-refine-protected2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_47-refine-protected2_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 f7e90d4b6ab0561c00fafe8b5db7dd972e67889e2cb8e9e72502cd51ce4f0a76 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 22:28:03,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 22:28:03,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 22:28:03,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 22:28:03,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 22:28:03,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 22:28:03,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 22:28:03,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 22:28:03,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 22:28:03,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 22:28:03,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 22:28:03,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 22:28:03,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 22:28:03,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 22:28:03,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 22:28:03,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 22:28:03,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 22:28:03,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 22:28:03,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 22:28:03,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 22:28:03,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 22:28:03,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 22:28:03,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 22:28:03,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 22:28:03,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 22:28:03,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 22:28:03,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 22:28:03,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 22:28:03,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 22:28:03,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 22:28:03,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 22:28:03,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 22:28:03,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 22:28:03,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 22:28:03,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 22:28:03,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 22:28:03,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 22:28:03,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 22:28:03,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 22:28:03,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 22:28:03,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 22:28:03,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 22:28:03,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 22:28:03,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 22:28:03,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 22:28:03,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 22:28:03,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 22:28:03,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 22:28:03,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 22:28:03,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 22:28:03,384 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 22:28:03,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 22:28:03,385 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 22:28:03,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 22:28:03,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 22:28:03,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 22:28:03,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 22:28:03,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 22:28:03,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 22:28:03,386 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 22:28:03,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 22:28:03,386 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 22:28:03,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 22:28:03,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 22:28:03,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 22:28:03,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 22:28:03,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:28:03,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 22:28:03,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 22:28:03,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 22:28:03,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 22:28:03,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 22:28:03,389 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 22:28:03,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 22:28:03,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 22:28:03,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 22:28:03,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7e90d4b6ab0561c00fafe8b5db7dd972e67889e2cb8e9e72502cd51ce4f0a76 [2021-12-17 22:28:03,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 22:28:03,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 22:28:03,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 22:28:03,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 22:28:03,596 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 22:28:03,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_47-refine-protected2_true.i [2021-12-17 22:28:03,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7491100ff/eb9d12f4b6154e6a9490528db64859af/FLAGd8223626a [2021-12-17 22:28:04,043 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 22:28:04,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_47-refine-protected2_true.i [2021-12-17 22:28:04,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7491100ff/eb9d12f4b6154e6a9490528db64859af/FLAGd8223626a [2021-12-17 22:28:04,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7491100ff/eb9d12f4b6154e6a9490528db64859af [2021-12-17 22:28:04,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 22:28:04,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 22:28:04,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 22:28:04,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 22:28:04,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 22:28:04,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37542b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04, skipping insertion in model container [2021-12-17 22:28:04,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 22:28:04,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 22:28:04,221 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_47-refine-protected2_true.i[1094,1107] [2021-12-17 22:28:04,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:28:04,333 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 22:28:04,344 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_47-refine-protected2_true.i[1094,1107] [2021-12-17 22:28:04,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 22:28:04,410 INFO L208 MainTranslator]: Completed translation [2021-12-17 22:28:04,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04 WrapperNode [2021-12-17 22:28:04,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 22:28:04,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 22:28:04,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 22:28:04,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 22:28:04,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,454 INFO L137 Inliner]: procedures = 162, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2021-12-17 22:28:04,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 22:28:04,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 22:28:04,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 22:28:04,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 22:28:04,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 22:28:04,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 22:28:04,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 22:28:04,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 22:28:04,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (1/1) ... [2021-12-17 22:28:04,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 22:28:04,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 22:28:04,528 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) [2021-12-17 22:28:04,546 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 [2021-12-17 22:28:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 22:28:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-17 22:28:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 22:28:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 22:28:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-12-17 22:28:04,566 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-12-17 22:28:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 22:28:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 22:28:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 22:28:04,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 22:28:04,570 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 22:28:04,680 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 22:28:04,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 22:28:04,775 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 22:28:04,779 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 22:28:04,780 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 22:28:04,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:28:04 BoogieIcfgContainer [2021-12-17 22:28:04,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 22:28:04,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 22:28:04,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 22:28:04,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 22:28:04,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 10:28:04" (1/3) ... [2021-12-17 22:28:04,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47572333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:28:04, skipping insertion in model container [2021-12-17 22:28:04,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 10:28:04" (2/3) ... [2021-12-17 22:28:04,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47572333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 10:28:04, skipping insertion in model container [2021-12-17 22:28:04,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:28:04" (3/3) ... [2021-12-17 22:28:04,799 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_47-refine-protected2_true.i [2021-12-17 22:28:04,802 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 22:28:04,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 22:28:04,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 22:28:04,803 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 22:28:04,822 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,822 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,823 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,823 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,823 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,823 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,823 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,824 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,824 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,824 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,824 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,824 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,825 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,825 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,826 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,826 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,832 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,832 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,832 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,833 WARN L322 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,833 WARN L322 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 22:28:04,836 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-17 22:28:04,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 22:28:04,871 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 22:28:04,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-17 22:28:04,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 137 flow [2021-12-17 22:28:04,908 INFO L129 PetriNetUnfolder]: 3/65 cut-off events. [2021-12-17 22:28:04,908 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:28:04,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 3/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 58 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2021-12-17 22:28:04,910 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 66 transitions, 137 flow [2021-12-17 22:28:04,913 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 50 transitions, 103 flow [2021-12-17 22:28:04,924 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-12-17 22:28:04,924 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-17 22:28:04,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:28:04,925 INFO L254 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] [2021-12-17 22:28:04,925 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:28:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:28:04,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1714392896, now seen corresponding path program 1 times [2021-12-17 22:28:04,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:28:04,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190055293] [2021-12-17 22:28:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:28:04,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:28:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:28:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:28:05,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:28:05,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190055293] [2021-12-17 22:28:05,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190055293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:28:05,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:28:05,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 22:28:05,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476060389] [2021-12-17 22:28:05,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:28:05,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 22:28:05,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:28:05,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 22:28:05,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 22:28:05,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 66 [2021-12-17 22:28:05,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2021-12-17 22:28:05,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:28:05,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 66 [2021-12-17 22:28:05,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:28:05,226 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-12-17 22:28:05,226 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-12-17 22:28:05,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 66 events. 1/66 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 51. Up to 7 conditions per place. [2021-12-17 22:28:05,228 INFO L132 encePairwiseOnDemand]: 62/66 looper letters, 6 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2021-12-17 22:28:05,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 125 flow [2021-12-17 22:28:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 22:28:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-17 22:28:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2021-12-17 22:28:05,239 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838383838383839 [2021-12-17 22:28:05,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2021-12-17 22:28:05,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2021-12-17 22:28:05,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:28:05,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2021-12-17 22:28:05,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-12-17 22:28:05,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:05,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 22:28:05,254 INFO L186 Difference]: Start difference. First operand has 54 places, 50 transitions, 103 flow. Second operand 3 states and 175 transitions. [2021-12-17 22:28:05,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 125 flow [2021-12-17 22:28:05,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-17 22:28:05,264 INFO L242 Difference]: Finished difference. Result has 57 places, 51 transitions, 120 flow [2021-12-17 22:28:05,266 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2021-12-17 22:28:05,268 INFO L334 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2021-12-17 22:28:05,269 INFO L470 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 120 flow [2021-12-17 22:28:05,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2021-12-17 22:28:05,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:28:05,272 INFO L254 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] [2021-12-17 22:28:05,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 22:28:05,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:28:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:28:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash 83167749, now seen corresponding path program 1 times [2021-12-17 22:28:05,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:28:05,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343646603] [2021-12-17 22:28:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:28:05,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:28:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:28:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:28:05,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:28:05,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343646603] [2021-12-17 22:28:05,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343646603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:28:05,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:28:05,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:28:05,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630413388] [2021-12-17 22:28:05,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:28:05,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:28:05,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:28:05,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:28:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:28:05,432 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 66 [2021-12-17 22:28:05,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-12-17 22:28:05,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:28:05,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 66 [2021-12-17 22:28:05,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:28:05,478 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-12-17 22:28:05,478 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-12-17 22:28:05,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 73 events. 2/73 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 164 event pairs, 0 based on Foata normal form. 3/76 useless extension candidates. Maximal degree in co-relation 86. Up to 12 conditions per place. [2021-12-17 22:28:05,479 INFO L132 encePairwiseOnDemand]: 60/66 looper letters, 11 selfloop transitions, 2 changer transitions 8/58 dead transitions. [2021-12-17 22:28:05,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 184 flow [2021-12-17 22:28:05,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 22:28:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-17 22:28:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 352 transitions. [2021-12-17 22:28:05,482 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2021-12-17 22:28:05,482 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 352 transitions. [2021-12-17 22:28:05,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 352 transitions. [2021-12-17 22:28:05,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:28:05,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 352 transitions. [2021-12-17 22:28:05,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 50.285714285714285) internal successors, (352), 7 states have internal predecessors, (352), 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) [2021-12-17 22:28:05,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 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) [2021-12-17 22:28:05,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 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) [2021-12-17 22:28:05,486 INFO L186 Difference]: Start difference. First operand has 57 places, 51 transitions, 120 flow. Second operand 7 states and 352 transitions. [2021-12-17 22:28:05,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 184 flow [2021-12-17 22:28:05,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-17 22:28:05,487 INFO L242 Difference]: Finished difference. Result has 66 places, 50 transitions, 126 flow [2021-12-17 22:28:05,488 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2021-12-17 22:28:05,488 INFO L334 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2021-12-17 22:28:05,488 INFO L470 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 126 flow [2021-12-17 22:28:05,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 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) [2021-12-17 22:28:05,489 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:28:05,489 INFO L254 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] [2021-12-17 22:28:05,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 22:28:05,489 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:28:05,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:28:05,490 INFO L85 PathProgramCache]: Analyzing trace with hash -740331581, now seen corresponding path program 1 times [2021-12-17 22:28:05,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:28:05,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778768976] [2021-12-17 22:28:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:28:05,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:28:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:28:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:28:05,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:28:05,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778768976] [2021-12-17 22:28:05,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778768976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:28:05,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:28:05,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 22:28:05,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836252181] [2021-12-17 22:28:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:28:05,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 22:28:05,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:28:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 22:28:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 22:28:05,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2021-12-17 22:28:05,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 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) [2021-12-17 22:28:05,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:28:05,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2021-12-17 22:28:05,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:28:05,574 INFO L129 PetriNetUnfolder]: 0/47 cut-off events. [2021-12-17 22:28:05,574 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-12-17 22:28:05,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 47 events. 0/47 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-12-17 22:28:05,575 INFO L132 encePairwiseOnDemand]: 61/66 looper letters, 12 selfloop transitions, 5 changer transitions 3/46 dead transitions. [2021-12-17 22:28:05,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 146 flow [2021-12-17 22:28:05,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 22:28:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-17 22:28:05,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2021-12-17 22:28:05,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6272727272727273 [2021-12-17 22:28:05,576 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 207 transitions. [2021-12-17 22:28:05,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 207 transitions. [2021-12-17 22:28:05,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:28:05,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 207 transitions. [2021-12-17 22:28:05,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 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) [2021-12-17 22:28:05,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2021-12-17 22:28:05,578 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2021-12-17 22:28:05,579 INFO L186 Difference]: Start difference. First operand has 66 places, 50 transitions, 126 flow. Second operand 5 states and 207 transitions. [2021-12-17 22:28:05,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 146 flow [2021-12-17 22:28:05,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 140 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-17 22:28:05,580 INFO L242 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2021-12-17 22:28:05,580 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2021-12-17 22:28:05,581 INFO L334 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2021-12-17 22:28:05,581 INFO L470 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2021-12-17 22:28:05,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.666666666666664) internal successors, (238), 6 states have internal predecessors, (238), 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) [2021-12-17 22:28:05,581 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 22:28:05,581 INFO L254 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] [2021-12-17 22:28:05,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 22:28:05,582 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-12-17 22:28:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 22:28:05,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1940122568, now seen corresponding path program 1 times [2021-12-17 22:28:05,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 22:28:05,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134902080] [2021-12-17 22:28:05,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 22:28:05,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 22:28:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 22:28:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 22:28:05,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 22:28:05,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134902080] [2021-12-17 22:28:05,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134902080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 22:28:05,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 22:28:05,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 22:28:05,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236174116] [2021-12-17 22:28:05,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 22:28:05,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 22:28:05,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 22:28:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 22:28:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 22:28:05,615 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 66 [2021-12-17 22:28:05,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 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) [2021-12-17 22:28:05,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 22:28:05,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 66 [2021-12-17 22:28:05,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 22:28:05,633 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-12-17 22:28:05,633 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-17 22:28:05,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 41 events. 0/41 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-12-17 22:28:05,634 INFO L132 encePairwiseOnDemand]: 62/66 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2021-12-17 22:28:05,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 114 flow [2021-12-17 22:28:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 22:28:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-17 22:28:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2021-12-17 22:28:05,636 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2021-12-17 22:28:05,636 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 243 transitions. [2021-12-17 22:28:05,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 243 transitions. [2021-12-17 22:28:05,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 22:28:05,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 243 transitions. [2021-12-17 22:28:05,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 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) [2021-12-17 22:28:05,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2021-12-17 22:28:05,639 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 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) [2021-12-17 22:28:05,639 INFO L186 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 5 states and 243 transitions. [2021-12-17 22:28:05,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 114 flow [2021-12-17 22:28:05,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 101 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-12-17 22:28:05,640 INFO L242 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2021-12-17 22:28:05,640 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2021-12-17 22:28:05,641 INFO L334 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2021-12-17 22:28:05,642 INFO L470 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2021-12-17 22:28:05,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 5 states have internal predecessors, (243), 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) [2021-12-17 22:28:05,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-17 22:28:05,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-12-17 22:28:05,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 3 remaining) [2021-12-17 22:28:05,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 22:28:05,648 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-17 22:28:05,649 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 22:28:05,650 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 22:28:05,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 10:28:05 BasicIcfg [2021-12-17 22:28:05,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 22:28:05,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 22:28:05,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 22:28:05,653 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 22:28:05,653 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 10:28:04" (3/4) ... [2021-12-17 22:28:05,655 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 22:28:05,660 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2021-12-17 22:28:05,663 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-17 22:28:05,664 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 22:28:05,664 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 22:28:05,664 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 22:28:05,693 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 22:28:05,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 22:28:05,694 INFO L158 Benchmark]: Toolchain (without parser) took 1630.55ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 48.9MB in the end (delta: 33.4MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,694 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 77.6MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:28:05,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.26ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 81.9MB in the end (delta: 361.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.72ms. Allocated memory is still 115.3MB. Free memory was 81.9MB in the beginning and 79.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,694 INFO L158 Benchmark]: Boogie Preprocessor took 35.67ms. Allocated memory is still 115.3MB. Free memory was 79.9MB in the beginning and 79.3MB in the end (delta: 678.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 22:28:05,695 INFO L158 Benchmark]: RCFGBuilder took 289.54ms. Allocated memory is still 115.3MB. Free memory was 79.3MB in the beginning and 68.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,695 INFO L158 Benchmark]: TraceAbstraction took 870.04ms. Allocated memory is still 115.3MB. Free memory was 67.3MB in the beginning and 51.8MB in the end (delta: 15.6MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,695 INFO L158 Benchmark]: Witness Printer took 40.31ms. Allocated memory is still 115.3MB. Free memory was 51.8MB in the beginning and 48.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 22:28:05,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 77.6MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.26ms. Allocated memory is still 115.3MB. Free memory was 82.3MB in the beginning and 81.9MB in the end (delta: 361.2kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.72ms. Allocated memory is still 115.3MB. Free memory was 81.9MB in the beginning and 79.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.67ms. Allocated memory is still 115.3MB. Free memory was 79.9MB in the beginning and 79.3MB in the end (delta: 678.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 289.54ms. Allocated memory is still 115.3MB. Free memory was 79.3MB in the beginning and 68.1MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 870.04ms. Allocated memory is still 115.3MB. Free memory was 67.3MB in the beginning and 51.8MB in the end (delta: 15.6MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * Witness Printer took 40.31ms. Allocated memory is still 115.3MB. Free memory was 51.8MB in the beginning and 48.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 73 locations, 3 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: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 33 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 302 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-17 22:28:05,725 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