./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:14:59,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:14:59,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:14:59,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:14:59,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:14:59,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:14:59,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:14:59,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:14:59,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:14:59,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:14:59,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:14:59,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:14:59,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:14:59,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:14:59,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:14:59,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:14:59,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:14:59,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:14:59,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:14:59,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:14:59,673 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:14:59,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:14:59,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:14:59,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:14:59,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:14:59,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:14:59,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:14:59,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:14:59,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:14:59,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:14:59,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:14:59,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:14:59,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:14:59,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:14:59,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:14:59,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:14:59,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:14:59,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:14:59,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:14:59,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:14:59,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:14:59,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:14:59,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:14:59,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:14:59,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:14:59,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:14:59,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:14:59,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:14:59,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:14:59,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:14:59,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:14:59,718 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:14:59,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:14:59,719 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:14:59,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:14:59,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:14:59,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:14:59,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:14:59,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:14:59,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:14:59,720 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:14:59,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:14:59,722 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:14:59,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:14:59,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:14:59,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:14:59,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:14:59,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:14:59,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:14:59,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:14:59,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:14:59,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:14:59,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:14:59,724 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:14:59,725 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:14:59,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:14:59,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4017723c7e4b1f7c431c7e7a6ea6ca9df8ac56fc590cd03021a11577cb455eff [2022-07-12 10:14:59,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:14:59,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:14:59,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:14:59,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:14:59,991 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:14:59,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2022-07-12 10:15:00,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae688460d/6c0ed878676048a6863d5382f9a54674/FLAG9227942e7 [2022-07-12 10:15:00,583 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:15:00,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_25-struct_nr_true.i [2022-07-12 10:15:00,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae688460d/6c0ed878676048a6863d5382f9a54674/FLAG9227942e7 [2022-07-12 10:15:00,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae688460d/6c0ed878676048a6863d5382f9a54674 [2022-07-12 10:15:00,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:15:00,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:15:00,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:15:00,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:15:00,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:15:00,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:15:00" (1/1) ... [2022-07-12 10:15:00,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc60fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:00, skipping insertion in model container [2022-07-12 10:15:00,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:15:00" (1/1) ... [2022-07-12 10:15:00,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:15:00,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:15:01,105 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_25-struct_nr_true.i[1086,1099] [2022-07-12 10:15:01,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:15:01,243 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:15:01,256 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_25-struct_nr_true.i[1086,1099] [2022-07-12 10:15:01,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:15:01,339 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:15:01,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01 WrapperNode [2022-07-12 10:15:01,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:15:01,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:15:01,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:15:01,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:15:01,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,405 INFO L137 Inliner]: procedures = 162, calls = 24, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 76 [2022-07-12 10:15:01,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:15:01,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:15:01,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:15:01,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:15:01,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:15:01,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:15:01,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:15:01,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:15:01,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (1/1) ... [2022-07-12 10:15:01,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:15:01,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:15:01,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:15:01,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:15:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:15:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:15:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:15:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:15:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:15:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-12 10:15:01,528 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-12 10:15:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:15:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:15:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:15:01,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:15:01,529 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:15:01,633 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:15:01,634 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:15:01,766 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:15:01,772 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:15:01,772 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:15:01,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:15:01 BoogieIcfgContainer [2022-07-12 10:15:01,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:15:01,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:15:01,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:15:01,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:15:01,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:15:00" (1/3) ... [2022-07-12 10:15:01,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e691dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:15:01, skipping insertion in model container [2022-07-12 10:15:01,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:15:01" (2/3) ... [2022-07-12 10:15:01,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e691dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:15:01, skipping insertion in model container [2022-07-12 10:15:01,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:15:01" (3/3) ... [2022-07-12 10:15:01,781 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_25-struct_nr_true.i [2022-07-12 10:15:01,803 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:15:01,811 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:15:01,811 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-12 10:15:01,812 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:15:01,865 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-12 10:15:01,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 200 flow [2022-07-12 10:15:01,942 INFO L129 PetriNetUnfolder]: 4/95 cut-off events. [2022-07-12 10:15:01,942 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:15:01,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 4/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-07-12 10:15:01,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 200 flow [2022-07-12 10:15:01,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 87 transitions, 177 flow [2022-07-12 10:15:01,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:15:01,977 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@75d9d164, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@273aee9b [2022-07-12 10:15:01,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:15:01,983 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2022-07-12 10:15:01,984 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-12 10:15:01,984 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:01,985 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] [2022-07-12 10:15:01,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:15:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:01,990 INFO L85 PathProgramCache]: Analyzing trace with hash -948070911, now seen corresponding path program 1 times [2022-07-12 10:15:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:01,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490359092] [2022-07-12 10:15:01,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:15:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:15:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:15:02,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490359092] [2022-07-12 10:15:02,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490359092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:15:02,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:15:02,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:15:02,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194009537] [2022-07-12 10:15:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:15:02,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:15:02,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:15:02,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:15:02,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:15:02,360 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 96 [2022-07-12 10:15:02,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:02,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:15:02,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 96 [2022-07-12 10:15:02,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:15:02,527 INFO L129 PetriNetUnfolder]: 36/201 cut-off events. [2022-07-12 10:15:02,529 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-12 10:15:02,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 201 events. 36/201 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 811 event pairs, 3 based on Foata normal form. 25/214 useless extension candidates. Maximal degree in co-relation 255. Up to 36 conditions per place. [2022-07-12 10:15:02,536 INFO L132 encePairwiseOnDemand]: 84/96 looper letters, 23 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2022-07-12 10:15:02,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 243 flow [2022-07-12 10:15:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:15:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:15:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2022-07-12 10:15:02,574 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7574404761904762 [2022-07-12 10:15:02,575 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 509 transitions. [2022-07-12 10:15:02,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 509 transitions. [2022-07-12 10:15:02,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:15:02,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 509 transitions. [2022-07-12 10:15:02,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:02,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:02,599 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:02,601 INFO L186 Difference]: Start difference. First operand has 87 places, 87 transitions, 177 flow. Second operand 7 states and 509 transitions. [2022-07-12 10:15:02,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 243 flow [2022-07-12 10:15:02,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:15:02,611 INFO L242 Difference]: Finished difference. Result has 87 places, 79 transitions, 183 flow [2022-07-12 10:15:02,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2022-07-12 10:15:02,618 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 0 predicate places. [2022-07-12 10:15:02,619 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 183 flow [2022-07-12 10:15:02,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:02,620 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:02,620 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] [2022-07-12 10:15:02,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:15:02,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:15:02,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:02,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1028974734, now seen corresponding path program 1 times [2022-07-12 10:15:02,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:02,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180374686] [2022-07-12 10:15:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:02,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:15:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:15:02,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:15:02,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180374686] [2022-07-12 10:15:02,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180374686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:15:02,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:15:02,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:15:02,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765911033] [2022-07-12 10:15:02,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:15:02,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:15:02,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:15:02,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:15:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:15:02,792 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 96 [2022-07-12 10:15:02,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:02,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:15:02,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 96 [2022-07-12 10:15:02,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:15:03,047 INFO L129 PetriNetUnfolder]: 99/474 cut-off events. [2022-07-12 10:15:03,048 INFO L130 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-07-12 10:15:03,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 474 events. 99/474 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2722 event pairs, 31 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 762. Up to 69 conditions per place. [2022-07-12 10:15:03,052 INFO L132 encePairwiseOnDemand]: 83/96 looper letters, 51 selfloop transitions, 19 changer transitions 2/127 dead transitions. [2022-07-12 10:15:03,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 127 transitions, 452 flow [2022-07-12 10:15:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:15:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:15:03,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 854 transitions. [2022-07-12 10:15:03,055 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7413194444444444 [2022-07-12 10:15:03,056 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 854 transitions. [2022-07-12 10:15:03,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 854 transitions. [2022-07-12 10:15:03,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:15:03,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 854 transitions. [2022-07-12 10:15:03,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.16666666666667) internal successors, (854), 12 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 96.0) internal successors, (1248), 13 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,061 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 96.0) internal successors, (1248), 13 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,062 INFO L186 Difference]: Start difference. First operand has 87 places, 79 transitions, 183 flow. Second operand 12 states and 854 transitions. [2022-07-12 10:15:03,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 127 transitions, 452 flow [2022-07-12 10:15:03,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 424 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:15:03,067 INFO L242 Difference]: Finished difference. Result has 99 places, 93 transitions, 286 flow [2022-07-12 10:15:03,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=286, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-07-12 10:15:03,068 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 12 predicate places. [2022-07-12 10:15:03,068 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 286 flow [2022-07-12 10:15:03,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,068 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:03,069 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] [2022-07-12 10:15:03,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:15:03,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:15:03,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1104650203, now seen corresponding path program 1 times [2022-07-12 10:15:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:03,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890385461] [2022-07-12 10:15:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:03,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:15:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:15:03,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:15:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890385461] [2022-07-12 10:15:03,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890385461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:15:03,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:15:03,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:15:03,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660062738] [2022-07-12 10:15:03,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:15:03,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:15:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:15:03,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:15:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:15:03,223 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 96 [2022-07-12 10:15:03,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 286 flow. Second operand has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:15:03,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 96 [2022-07-12 10:15:03,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:15:03,406 INFO L129 PetriNetUnfolder]: 94/582 cut-off events. [2022-07-12 10:15:03,407 INFO L130 PetriNetUnfolder]: For 265/289 co-relation queries the response was YES. [2022-07-12 10:15:03,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 582 events. 94/582 cut-off events. For 265/289 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4060 event pairs, 5 based on Foata normal form. 10/580 useless extension candidates. Maximal degree in co-relation 1095. Up to 96 conditions per place. [2022-07-12 10:15:03,411 INFO L132 encePairwiseOnDemand]: 82/96 looper letters, 46 selfloop transitions, 26 changer transitions 4/139 dead transitions. [2022-07-12 10:15:03,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 139 transitions, 637 flow [2022-07-12 10:15:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:15:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:15:03,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 908 transitions. [2022-07-12 10:15:03,414 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7275641025641025 [2022-07-12 10:15:03,414 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 908 transitions. [2022-07-12 10:15:03,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 908 transitions. [2022-07-12 10:15:03,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:15:03,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 908 transitions. [2022-07-12 10:15:03,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.84615384615384) internal successors, (908), 13 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,420 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,420 INFO L186 Difference]: Start difference. First operand has 99 places, 93 transitions, 286 flow. Second operand 13 states and 908 transitions. [2022-07-12 10:15:03,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 139 transitions, 637 flow [2022-07-12 10:15:03,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 139 transitions, 633 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-07-12 10:15:03,427 INFO L242 Difference]: Finished difference. Result has 118 places, 110 transitions, 460 flow [2022-07-12 10:15:03,428 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=460, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2022-07-12 10:15:03,428 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 31 predicate places. [2022-07-12 10:15:03,429 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 460 flow [2022-07-12 10:15:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,429 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:03,429 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] [2022-07-12 10:15:03,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:15:03,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:15:03,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash 303594596, now seen corresponding path program 1 times [2022-07-12 10:15:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:03,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370741585] [2022-07-12 10:15:03,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:03,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:15:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:15:03,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:15:03,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370741585] [2022-07-12 10:15:03,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370741585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:15:03,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:15:03,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:15:03,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847423863] [2022-07-12 10:15:03,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:15:03,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:15:03,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:15:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:15:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:15:03,498 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 96 [2022-07-12 10:15:03,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:15:03,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 96 [2022-07-12 10:15:03,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:15:03,527 INFO L129 PetriNetUnfolder]: 0/115 cut-off events. [2022-07-12 10:15:03,528 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-07-12 10:15:03,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 115 events. 0/115 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 2/117 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2022-07-12 10:15:03,528 INFO L132 encePairwiseOnDemand]: 92/96 looper letters, 7 selfloop transitions, 4 changer transitions 4/94 dead transitions. [2022-07-12 10:15:03,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 94 transitions, 356 flow [2022-07-12 10:15:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:15:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:15:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2022-07-12 10:15:03,530 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8368055555555556 [2022-07-12 10:15:03,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2022-07-12 10:15:03,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2022-07-12 10:15:03,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:15:03,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2022-07-12 10:15:03,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,533 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,533 INFO L186 Difference]: Start difference. First operand has 118 places, 110 transitions, 460 flow. Second operand 3 states and 241 transitions. [2022-07-12 10:15:03,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 94 transitions, 356 flow [2022-07-12 10:15:03,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 94 transitions, 322 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-07-12 10:15:03,545 INFO L242 Difference]: Finished difference. Result has 109 places, 90 transitions, 290 flow [2022-07-12 10:15:03,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2022-07-12 10:15:03,546 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 22 predicate places. [2022-07-12 10:15:03,546 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 290 flow [2022-07-12 10:15:03,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,547 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:03,547 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] [2022-07-12 10:15:03,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:15:03,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:15:03,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1778536600, now seen corresponding path program 1 times [2022-07-12 10:15:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:03,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687861199] [2022-07-12 10:15:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:15:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:15:03,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:15:03,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687861199] [2022-07-12 10:15:03,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687861199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:15:03,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:15:03,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:15:03,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696252033] [2022-07-12 10:15:03,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:15:03,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:15:03,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:15:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:15:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:15:03,591 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 96 [2022-07-12 10:15:03,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:15:03,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 96 [2022-07-12 10:15:03,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:15:03,653 INFO L129 PetriNetUnfolder]: 0/98 cut-off events. [2022-07-12 10:15:03,653 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-07-12 10:15:03,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 98 events. 0/98 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2022-07-12 10:15:03,654 INFO L132 encePairwiseOnDemand]: 89/96 looper letters, 20 selfloop transitions, 6 changer transitions 4/88 dead transitions. [2022-07-12 10:15:03,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 88 transitions, 346 flow [2022-07-12 10:15:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:15:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:15:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 486 transitions. [2022-07-12 10:15:03,656 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7232142857142857 [2022-07-12 10:15:03,656 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 486 transitions. [2022-07-12 10:15:03,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 486 transitions. [2022-07-12 10:15:03,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:15:03,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 486 transitions. [2022-07-12 10:15:03,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,660 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 96.0) internal successors, (768), 8 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,660 INFO L186 Difference]: Start difference. First operand has 109 places, 90 transitions, 290 flow. Second operand 7 states and 486 transitions. [2022-07-12 10:15:03,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 88 transitions, 346 flow [2022-07-12 10:15:03,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 88 transitions, 337 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:15:03,663 INFO L242 Difference]: Finished difference. Result has 111 places, 84 transitions, 271 flow [2022-07-12 10:15:03,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=111, PETRI_TRANSITIONS=84} [2022-07-12 10:15:03,667 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2022-07-12 10:15:03,667 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 84 transitions, 271 flow [2022-07-12 10:15:03,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,668 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:03,668 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] [2022-07-12 10:15:03,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:15:03,669 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:15:03,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1820780034, now seen corresponding path program 1 times [2022-07-12 10:15:03,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:03,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856099721] [2022-07-12 10:15:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:15:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:15:03,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:15:03,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856099721] [2022-07-12 10:15:03,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856099721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:15:03,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:15:03,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:15:03,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499672872] [2022-07-12 10:15:03,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:15:03,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:15:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:15:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:15:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:15:03,862 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 96 [2022-07-12 10:15:03,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 84 transitions, 271 flow. Second operand has 9 states, 9 states have (on average 63.888888888888886) internal successors, (575), 9 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:03,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:15:03,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 96 [2022-07-12 10:15:03,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:15:04,115 INFO L129 PetriNetUnfolder]: 7/108 cut-off events. [2022-07-12 10:15:04,115 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-07-12 10:15:04,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 108 events. 7/108 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 130 event pairs, 1 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2022-07-12 10:15:04,116 INFO L132 encePairwiseOnDemand]: 80/96 looper letters, 8 selfloop transitions, 12 changer transitions 21/87 dead transitions. [2022-07-12 10:15:04,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 87 transitions, 345 flow [2022-07-12 10:15:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:15:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:15:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1149 transitions. [2022-07-12 10:15:04,121 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6649305555555556 [2022-07-12 10:15:04,121 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1149 transitions. [2022-07-12 10:15:04,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1149 transitions. [2022-07-12 10:15:04,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:15:04,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1149 transitions. [2022-07-12 10:15:04,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 63.833333333333336) internal successors, (1149), 18 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:04,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 96.0) internal successors, (1824), 19 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:04,127 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 96.0) internal successors, (1824), 19 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:04,127 INFO L186 Difference]: Start difference. First operand has 111 places, 84 transitions, 271 flow. Second operand 18 states and 1149 transitions. [2022-07-12 10:15:04,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 87 transitions, 345 flow [2022-07-12 10:15:04,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 87 transitions, 319 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-12 10:15:04,131 INFO L242 Difference]: Finished difference. Result has 114 places, 66 transitions, 198 flow [2022-07-12 10:15:04,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=198, PETRI_PLACES=114, PETRI_TRANSITIONS=66} [2022-07-12 10:15:04,133 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, 27 predicate places. [2022-07-12 10:15:04,133 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 66 transitions, 198 flow [2022-07-12 10:15:04,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.888888888888886) internal successors, (575), 9 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:04,134 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:15:04,134 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] [2022-07-12 10:15:04,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:15:04,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:15:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:15:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1268927739, now seen corresponding path program 1 times [2022-07-12 10:15:04,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:15:04,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459979008] [2022-07-12 10:15:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:15:04,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:15:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:15:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:15:04,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:15:04,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459979008] [2022-07-12 10:15:04,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459979008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:15:04,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:15:04,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:15:04,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702133269] [2022-07-12 10:15:04,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:15:04,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:15:04,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:15:04,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:15:04,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:15:04,269 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 96 [2022-07-12 10:15:04,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 66 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 65.5) internal successors, (524), 8 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:04,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:15:04,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 96 [2022-07-12 10:15:04,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:15:04,393 INFO L129 PetriNetUnfolder]: 0/66 cut-off events. [2022-07-12 10:15:04,394 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-07-12 10:15:04,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 66 events. 0/66 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-07-12 10:15:04,394 INFO L132 encePairwiseOnDemand]: 84/96 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2022-07-12 10:15:04,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 64 transitions, 230 flow [2022-07-12 10:15:04,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:15:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:15:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 713 transitions. [2022-07-12 10:15:04,397 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6751893939393939 [2022-07-12 10:15:04,397 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 713 transitions. [2022-07-12 10:15:04,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 713 transitions. [2022-07-12 10:15:04,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:15:04,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 713 transitions. [2022-07-12 10:15:04,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 64.81818181818181) internal successors, (713), 11 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:04,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 96.0) internal successors, (1152), 12 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:04,402 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 96.0) internal successors, (1152), 12 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:04,402 INFO L186 Difference]: Start difference. First operand has 114 places, 66 transitions, 198 flow. Second operand 11 states and 713 transitions. [2022-07-12 10:15:04,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 64 transitions, 230 flow [2022-07-12 10:15:04,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 64 transitions, 175 flow, removed 4 selfloop flow, removed 24 redundant places. [2022-07-12 10:15:04,404 INFO L242 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2022-07-12 10:15:04,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2022-07-12 10:15:04,405 INFO L279 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2022-07-12 10:15:04,405 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2022-07-12 10:15:04,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.5) internal successors, (524), 8 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:15:04,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-07-12 10:15:04,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-12 10:15:04,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-07-12 10:15:04,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-07-12 10:15:04,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-07-12 10:15:04,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-12 10:15:04,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-12 10:15:04,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:15:04,410 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:15:04,415 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:15:04,415 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:15:04,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:15:04 BasicIcfg [2022-07-12 10:15:04,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:15:04,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:15:04,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:15:04,424 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:15:04,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:15:01" (3/4) ... [2022-07-12 10:15:04,426 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:15:04,434 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-12 10:15:04,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-12 10:15:04,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 10:15:04,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:15:04,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:15:04,469 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:15:04,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:15:04,470 INFO L158 Benchmark]: Toolchain (without parser) took 3548.48ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 52.0MB in the beginning and 50.2MB in the end (delta: 1.8MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-07-12 10:15:04,471 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 86.0MB. Free memory was 42.2MB in the beginning and 42.1MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:15:04,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.45ms. Allocated memory is still 86.0MB. Free memory was 51.7MB in the beginning and 52.3MB in the end (delta: -621.7kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 10:15:04,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.29ms. Allocated memory is still 86.0MB. Free memory was 52.3MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:15:04,471 INFO L158 Benchmark]: Boogie Preprocessor took 48.55ms. Allocated memory is still 86.0MB. Free memory was 50.2MB in the beginning and 49.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:15:04,472 INFO L158 Benchmark]: RCFGBuilder took 319.06ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 37.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 10:15:04,472 INFO L158 Benchmark]: TraceAbstraction took 2646.69ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 36.4MB in the beginning and 52.4MB in the end (delta: -16.0MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2022-07-12 10:15:04,472 INFO L158 Benchmark]: Witness Printer took 46.51ms. Allocated memory is still 113.2MB. Free memory was 52.4MB in the beginning and 50.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:15:04,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 86.0MB. Free memory was 42.2MB in the beginning and 42.1MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.45ms. Allocated memory is still 86.0MB. Free memory was 51.7MB in the beginning and 52.3MB in the end (delta: -621.7kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.29ms. Allocated memory is still 86.0MB. Free memory was 52.3MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.55ms. Allocated memory is still 86.0MB. Free memory was 50.2MB in the beginning and 49.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.06ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 37.0MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2646.69ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 36.4MB in the beginning and 52.4MB in the end (delta: -16.0MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Witness Printer took 46.51ms. Allocated memory is still 113.2MB. Free memory was 52.4MB in the beginning and 50.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 123 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 275 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 275 mSDsluCounter, 336 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 357 IncrementalHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 108 mSDtfsCounter, 357 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=460occurred in iteration=3, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 333 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 326 ConstructedInterpolants, 0 QuantifiedInterpolants, 1394 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:15:04,509 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