./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.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/pthread-deagle/arithmetic_prog_ok.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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:45:12,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:45:12,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:45:12,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:45:12,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:45:12,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:45:12,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:45:12,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:45:12,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:45:12,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:45:12,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:45:12,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:45:12,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:45:12,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:45:12,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:45:12,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:45:12,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:45:12,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:45:12,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:45:12,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:45:12,555 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:45:12,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:45:12,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:45:12,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:45:12,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:45:12,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:45:12,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:45:12,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:45:12,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:45:12,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:45:12,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:45:12,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:45:12,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:45:12,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:45:12,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:45:12,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:45:12,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:45:12,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:45:12,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:45:12,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:45:12,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:45:12,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:45:12,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:45:12,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:45:12,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:45:12,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:45:12,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:45:12,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:45:12,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:45:12,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:45:12,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:45:12,609 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:45:12,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:45:12,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:45:12,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:45:12,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:45:12,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:45:12,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:45:12,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:45:12,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:45:12,612 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:45:12,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:45:12,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:45:12,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:45:12,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:45:12,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:45:12,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:45:12,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:45:12,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:45:12,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:45:12,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:45:12,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:45:12,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:45:12,615 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:45:12,616 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:45:12,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:45:12,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2022-07-12 10:45:12,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:45:12,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:45:12,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:45:12,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:45:12,889 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:45:12,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-07-12 10:45:12,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b95312a0/e7b52fbfa2134048996b14415cc01427/FLAGd2f8238d1 [2022-07-12 10:45:13,423 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:45:13,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2022-07-12 10:45:13,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b95312a0/e7b52fbfa2134048996b14415cc01427/FLAGd2f8238d1 [2022-07-12 10:45:13,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b95312a0/e7b52fbfa2134048996b14415cc01427 [2022-07-12 10:45:13,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:45:13,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:45:13,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:45:13,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:45:13,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:45:13,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:45:13" (1/1) ... [2022-07-12 10:45:13,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa03362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:13, skipping insertion in model container [2022-07-12 10:45:13,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:45:13" (1/1) ... [2022-07-12 10:45:13,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:45:13,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:45:14,199 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/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-07-12 10:45:14,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:45:14,213 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:45:14,242 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/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2022-07-12 10:45:14,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:45:14,285 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:45:14,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14 WrapperNode [2022-07-12 10:45:14,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:45:14,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:45:14,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:45:14,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:45:14,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,340 INFO L137 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-07-12 10:45:14,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:45:14,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:45:14,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:45:14,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:45:14,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:45:14,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:45:14,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:45:14,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:45:14,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (1/1) ... [2022-07-12 10:45:14,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:45:14,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:14,417 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 10:45:14,418 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 10:45:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:45:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:45:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:45:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:45:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:45:14,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:45:14,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:45:14,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:45:14,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:45:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:45:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:45:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:45:14,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:45:14,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:45:14,458 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 10:45:14,616 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:45:14,617 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:45:14,901 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:45:14,907 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:45:14,908 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-12 10:45:14,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:45:14 BoogieIcfgContainer [2022-07-12 10:45:14,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:45:14,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:45:14,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:45:14,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:45:14,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:45:13" (1/3) ... [2022-07-12 10:45:14,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6ce071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:45:14, skipping insertion in model container [2022-07-12 10:45:14,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:45:14" (2/3) ... [2022-07-12 10:45:14,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6ce071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:45:14, skipping insertion in model container [2022-07-12 10:45:14,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:45:14" (3/3) ... [2022-07-12 10:45:14,920 INFO L111 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2022-07-12 10:45:14,925 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:45:14,934 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:45:14,934 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:45:14,934 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:45:15,039 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:45:15,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2022-07-12 10:45:15,145 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2022-07-12 10:45:15,146 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:45:15,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 10/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2022-07-12 10:45:15,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 286 flow [2022-07-12 10:45:15,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2022-07-12 10:45:15,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:45:15,178 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@183ddf54, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d1a8783 [2022-07-12 10:45:15,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:45:15,201 INFO L129 PetriNetUnfolder]: 8/120 cut-off events. [2022-07-12 10:45:15,202 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:45:15,202 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:15,203 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:45:15,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:15,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:15,208 INFO L85 PathProgramCache]: Analyzing trace with hash 350379197, now seen corresponding path program 1 times [2022-07-12 10:45:15,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:15,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785958731] [2022-07-12 10:45:15,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:15,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:15,458 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 10:45:15,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:15,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785958731] [2022-07-12 10:45:15,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785958731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:45:15,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:45:15,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:45:15,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410973507] [2022-07-12 10:45:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:45:15,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 10:45:15,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 10:45:15,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 10:45:15,493 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 135 [2022-07-12 10:45:15,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 127.5) internal successors, (255), 2 states have internal predecessors, (255), 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 10:45:15,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:15,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 135 [2022-07-12 10:45:15,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:15,531 INFO L129 PetriNetUnfolder]: 4/117 cut-off events. [2022-07-12 10:45:15,532 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-07-12 10:45:15,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 117 events. 4/117 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 7/120 useless extension candidates. Maximal degree in co-relation 84. Up to 5 conditions per place. [2022-07-12 10:45:15,537 INFO L132 encePairwiseOnDemand]: 131/135 looper letters, 4 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2022-07-12 10:45:15,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 254 flow [2022-07-12 10:45:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 10:45:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-12 10:45:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2022-07-12 10:45:15,552 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2022-07-12 10:45:15,553 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2022-07-12 10:45:15,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2022-07-12 10:45:15,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:15,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2022-07-12 10:45:15,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 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 10:45:15,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 10:45:15,563 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 10:45:15,565 INFO L186 Difference]: Start difference. First operand has 120 places, 121 transitions, 254 flow. Second operand 2 states and 258 transitions. [2022-07-12 10:45:15,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 254 flow [2022-07-12 10:45:15,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:45:15,575 INFO L242 Difference]: Finished difference. Result has 117 places, 117 transitions, 238 flow [2022-07-12 10:45:15,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=238, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2022-07-12 10:45:15,582 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2022-07-12 10:45:15,582 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 238 flow [2022-07-12 10:45:15,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.5) internal successors, (255), 2 states have internal predecessors, (255), 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 10:45:15,582 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:15,583 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:45:15,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:45:15,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash -494092674, now seen corresponding path program 1 times [2022-07-12 10:45:15,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:15,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949310594] [2022-07-12 10:45:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:15,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:15,715 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 10:45:15,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949310594] [2022-07-12 10:45:15,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949310594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:45:15,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:45:15,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:45:15,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191363730] [2022-07-12 10:45:15,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:45:15,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:45:15,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:15,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:45:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:45:15,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2022-07-12 10:45:15,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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 10:45:15,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:15,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2022-07-12 10:45:15,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:15,836 INFO L129 PetriNetUnfolder]: 18/200 cut-off events. [2022-07-12 10:45:15,836 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:45:15,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 200 events. 18/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 551 event pairs, 3 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 240. Up to 22 conditions per place. [2022-07-12 10:45:15,839 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 12 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2022-07-12 10:45:15,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 275 flow [2022-07-12 10:45:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:45:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:45:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-07-12 10:45:15,842 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9185185185185185 [2022-07-12 10:45:15,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-07-12 10:45:15,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-07-12 10:45:15,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:15,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-07-12 10:45:15,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 10:45:15,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 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 10:45:15,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 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 10:45:15,847 INFO L186 Difference]: Start difference. First operand has 117 places, 117 transitions, 238 flow. Second operand 3 states and 372 transitions. [2022-07-12 10:45:15,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 275 flow [2022-07-12 10:45:15,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:45:15,851 INFO L242 Difference]: Finished difference. Result has 120 places, 118 transitions, 250 flow [2022-07-12 10:45:15,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2022-07-12 10:45:15,852 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 0 predicate places. [2022-07-12 10:45:15,852 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 250 flow [2022-07-12 10:45:15,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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 10:45:15,853 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:15,853 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:45:15,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:45:15,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:15,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:15,854 INFO L85 PathProgramCache]: Analyzing trace with hash -963664370, now seen corresponding path program 1 times [2022-07-12 10:45:15,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:15,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603897183] [2022-07-12 10:45:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:45:15,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:15,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603897183] [2022-07-12 10:45:15,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603897183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:45:15,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015042069] [2022-07-12 10:45:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:15,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:15,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:15,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:45:15,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:45:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:16,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 10:45:16,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:45:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:45:16,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:45:16,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015042069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:45:16,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:45:16,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-07-12 10:45:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828258667] [2022-07-12 10:45:16,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:45:16,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:45:16,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:16,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:45:16,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:45:16,149 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 135 [2022-07-12 10:45:16,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 10:45:16,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:16,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 135 [2022-07-12 10:45:16,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:16,225 INFO L129 PetriNetUnfolder]: 20/195 cut-off events. [2022-07-12 10:45:16,225 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-07-12 10:45:16,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 195 events. 20/195 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 545 event pairs, 7 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 241. Up to 28 conditions per place. [2022-07-12 10:45:16,230 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 15 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2022-07-12 10:45:16,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 295 flow [2022-07-12 10:45:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:45:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:45:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2022-07-12 10:45:16,234 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2022-07-12 10:45:16,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2022-07-12 10:45:16,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2022-07-12 10:45:16,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:16,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2022-07-12 10:45:16,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 10:45:16,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 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 10:45:16,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 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 10:45:16,241 INFO L186 Difference]: Start difference. First operand has 120 places, 118 transitions, 250 flow. Second operand 3 states and 369 transitions. [2022-07-12 10:45:16,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 295 flow [2022-07-12 10:45:16,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:45:16,249 INFO L242 Difference]: Finished difference. Result has 122 places, 119 transitions, 260 flow [2022-07-12 10:45:16,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2022-07-12 10:45:16,252 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2022-07-12 10:45:16,252 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 260 flow [2022-07-12 10:45:16,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 10:45:16,254 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:16,254 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:45:16,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:45:16,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:16,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -786293827, now seen corresponding path program 1 times [2022-07-12 10:45:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:16,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623648599] [2022-07-12 10:45:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:16,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:45:16,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:16,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623648599] [2022-07-12 10:45:16,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623648599] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:45:16,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600726597] [2022-07-12 10:45:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:16,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:16,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:16,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:45:16,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:45:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:16,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 10:45:16,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:45:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:45:16,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:45:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 10:45:16,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600726597] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:45:16,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:45:16,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-12 10:45:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230484377] [2022-07-12 10:45:16,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:45:16,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:45:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:16,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:45:16,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:45:16,912 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2022-07-12 10:45:16,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 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 10:45:16,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:16,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2022-07-12 10:45:16,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:17,032 INFO L129 PetriNetUnfolder]: 26/229 cut-off events. [2022-07-12 10:45:17,033 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:45:17,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 229 events. 26/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 541 event pairs, 4 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 312. Up to 17 conditions per place. [2022-07-12 10:45:17,035 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 18 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2022-07-12 10:45:17,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 353 flow [2022-07-12 10:45:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:45:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:45:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1091 transitions. [2022-07-12 10:45:17,039 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8979423868312757 [2022-07-12 10:45:17,039 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1091 transitions. [2022-07-12 10:45:17,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1091 transitions. [2022-07-12 10:45:17,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:17,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1091 transitions. [2022-07-12 10:45:17,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.22222222222223) internal successors, (1091), 9 states have internal predecessors, (1091), 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 10:45:17,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 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 10:45:17,050 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 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 10:45:17,050 INFO L186 Difference]: Start difference. First operand has 122 places, 119 transitions, 260 flow. Second operand 9 states and 1091 transitions. [2022-07-12 10:45:17,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 353 flow [2022-07-12 10:45:17,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 134 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:45:17,057 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 308 flow [2022-07-12 10:45:17,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=308, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2022-07-12 10:45:17,058 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 12 predicate places. [2022-07-12 10:45:17,059 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 308 flow [2022-07-12 10:45:17,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 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 10:45:17,060 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:17,061 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:17,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:45:17,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-12 10:45:17,283 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 211684319, now seen corresponding path program 2 times [2022-07-12 10:45:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:17,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963560361] [2022-07-12 10:45:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 10:45:17,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:17,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963560361] [2022-07-12 10:45:17,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963560361] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:45:17,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770897907] [2022-07-12 10:45:17,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:45:17,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:17,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:17,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:45:17,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:45:17,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:45:17,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:45:17,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 10:45:17,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:45:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 10:45:17,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:45:17,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770897907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:45:17,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:45:17,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-07-12 10:45:17,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738369298] [2022-07-12 10:45:17,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:45:17,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:45:17,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:17,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:45:17,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:45:17,597 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 135 [2022-07-12 10:45:17,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 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 10:45:17,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:17,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 135 [2022-07-12 10:45:17,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:17,841 INFO L129 PetriNetUnfolder]: 307/1229 cut-off events. [2022-07-12 10:45:17,841 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-07-12 10:45:17,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 1229 events. 307/1229 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7033 event pairs, 41 based on Foata normal form. 0/1117 useless extension candidates. Maximal degree in co-relation 1942. Up to 186 conditions per place. [2022-07-12 10:45:17,850 INFO L132 encePairwiseOnDemand]: 126/135 looper letters, 32 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2022-07-12 10:45:17,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 160 transitions, 484 flow [2022-07-12 10:45:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:45:17,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:45:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2022-07-12 10:45:17,853 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9005291005291005 [2022-07-12 10:45:17,853 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2022-07-12 10:45:17,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2022-07-12 10:45:17,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:17,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2022-07-12 10:45:17,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 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 10:45:17,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 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 10:45:17,858 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 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 10:45:17,858 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 308 flow. Second operand 7 states and 851 transitions. [2022-07-12 10:45:17,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 160 transitions, 484 flow [2022-07-12 10:45:17,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 160 transitions, 478 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-07-12 10:45:17,864 INFO L242 Difference]: Finished difference. Result has 143 places, 143 transitions, 442 flow [2022-07-12 10:45:17,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2022-07-12 10:45:17,864 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2022-07-12 10:45:17,865 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 442 flow [2022-07-12 10:45:17,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 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 10:45:17,865 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:17,865 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:17,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:45:18,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:18,076 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash -319465841, now seen corresponding path program 3 times [2022-07-12 10:45:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:18,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767233955] [2022-07-12 10:45:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:45:18,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:18,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767233955] [2022-07-12 10:45:18,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767233955] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:45:18,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731545139] [2022-07-12 10:45:18,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:45:18,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:18,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:18,177 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:45:18,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:45:18,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-12 10:45:18,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:45:18,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 10:45:18,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:45:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:45:18,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:45:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:45:18,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731545139] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:45:18,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:45:18,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-12 10:45:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745880229] [2022-07-12 10:45:18,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:45:18,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:45:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:45:18,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:45:18,445 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2022-07-12 10:45:18,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 442 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 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 10:45:18,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:18,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2022-07-12 10:45:18,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:18,681 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([366] thread1EXIT-->L915-2: Formula: (and (= 0 v_thread1Thread1of1ForFork1_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem16#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread1Thread1of1ForFork1_thidvar0_4)) InVars {ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork1_thidvar1=v_thread1Thread1of1ForFork1_thidvar1_4, thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem16#1=|v_ULTIMATE.start_main_#t~mem16#1_5|, thread1Thread1of1ForFork1_thidvar1=v_thread1Thread1of1ForFork1_thidvar1_4, thread1Thread1of1ForFork1_thidvar0=v_thread1Thread1of1ForFork1_thidvar0_4} AuxVars[] AssignedVars[][151], [26#L897true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), 119#L915-2true, 1954#(< thread2Thread1of1ForFork0_~j~0 4), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 863#(< thread1Thread1of1ForFork1_~i~0 4), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), 135#true, 1117#(<= 1 ~num~0), 439#true]) [2022-07-12 10:45:18,681 INFO L384 tUnfolder$Statistics]: this new event has 144 ancestors and is cut-off event [2022-07-12 10:45:18,681 INFO L387 tUnfolder$Statistics]: existing Event has 140 ancestors and is cut-off event [2022-07-12 10:45:18,681 INFO L387 tUnfolder$Statistics]: existing Event has 140 ancestors and is cut-off event [2022-07-12 10:45:18,682 INFO L387 tUnfolder$Statistics]: existing Event has 140 ancestors and is cut-off event [2022-07-12 10:45:18,698 INFO L129 PetriNetUnfolder]: 327/1513 cut-off events. [2022-07-12 10:45:18,698 INFO L130 PetriNetUnfolder]: For 797/886 co-relation queries the response was YES. [2022-07-12 10:45:18,707 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3136 conditions, 1513 events. 327/1513 cut-off events. For 797/886 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10159 event pairs, 31 based on Foata normal form. 54/1519 useless extension candidates. Maximal degree in co-relation 3122. Up to 173 conditions per place. [2022-07-12 10:45:18,715 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 22 selfloop transitions, 9 changer transitions 0/160 dead transitions. [2022-07-12 10:45:18,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 160 transitions, 547 flow [2022-07-12 10:45:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:45:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:45:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1077 transitions. [2022-07-12 10:45:18,718 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8864197530864197 [2022-07-12 10:45:18,718 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1077 transitions. [2022-07-12 10:45:18,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1077 transitions. [2022-07-12 10:45:18,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:18,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1077 transitions. [2022-07-12 10:45:18,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.66666666666667) internal successors, (1077), 9 states have internal predecessors, (1077), 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 10:45:18,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 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 10:45:18,725 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 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 10:45:18,725 INFO L186 Difference]: Start difference. First operand has 143 places, 143 transitions, 442 flow. Second operand 9 states and 1077 transitions. [2022-07-12 10:45:18,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 160 transitions, 547 flow [2022-07-12 10:45:18,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 160 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:45:18,733 INFO L242 Difference]: Finished difference. Result has 154 places, 149 transitions, 492 flow [2022-07-12 10:45:18,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=492, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2022-07-12 10:45:18,734 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 34 predicate places. [2022-07-12 10:45:18,734 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 492 flow [2022-07-12 10:45:18,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 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 10:45:18,735 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:18,735 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:18,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:45:18,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:18,956 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:18,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1404666689, now seen corresponding path program 4 times [2022-07-12 10:45:18,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:18,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085887217] [2022-07-12 10:45:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:18,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 10:45:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:19,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085887217] [2022-07-12 10:45:19,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085887217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:45:19,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:45:19,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:45:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355980413] [2022-07-12 10:45:19,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:45:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:45:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:45:19,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:45:19,022 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 135 [2022-07-12 10:45:19,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 10:45:19,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:19,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 135 [2022-07-12 10:45:19,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:19,155 INFO L129 PetriNetUnfolder]: 125/887 cut-off events. [2022-07-12 10:45:19,155 INFO L130 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-07-12 10:45:19,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 887 events. 125/887 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4614 event pairs, 14 based on Foata normal form. 92/979 useless extension candidates. Maximal degree in co-relation 1759. Up to 127 conditions per place. [2022-07-12 10:45:19,162 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 16 selfloop transitions, 8 changer transitions 0/141 dead transitions. [2022-07-12 10:45:19,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 141 transitions, 488 flow [2022-07-12 10:45:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:45:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:45:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2022-07-12 10:45:19,164 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-07-12 10:45:19,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2022-07-12 10:45:19,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2022-07-12 10:45:19,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:19,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2022-07-12 10:45:19,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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 10:45:19,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 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 10:45:19,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 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 10:45:19,167 INFO L186 Difference]: Start difference. First operand has 154 places, 149 transitions, 492 flow. Second operand 3 states and 349 transitions. [2022-07-12 10:45:19,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 141 transitions, 488 flow [2022-07-12 10:45:19,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 141 transitions, 468 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-07-12 10:45:19,173 INFO L242 Difference]: Finished difference. Result has 152 places, 139 transitions, 430 flow [2022-07-12 10:45:19,173 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-07-12 10:45:19,174 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 32 predicate places. [2022-07-12 10:45:19,174 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 430 flow [2022-07-12 10:45:19,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 10:45:19,174 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:19,175 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:19,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:45:19,175 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash -475481099, now seen corresponding path program 5 times [2022-07-12 10:45:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:19,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149016279] [2022-07-12 10:45:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:19,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 10:45:19,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:19,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149016279] [2022-07-12 10:45:19,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149016279] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:45:19,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258612135] [2022-07-12 10:45:19,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-12 10:45:19,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:19,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:19,283 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:45:19,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:45:19,383 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-12 10:45:19,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:45:19,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:45:19,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:45:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 10:45:19,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:45:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 10:45:19,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258612135] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:45:19,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:45:19,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-07-12 10:45:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312760486] [2022-07-12 10:45:19,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:45:19,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:45:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:45:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:45:19,538 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2022-07-12 10:45:19,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 430 flow. Second operand has 11 states, 11 states have (on average 118.54545454545455) internal successors, (1304), 11 states have internal predecessors, (1304), 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 10:45:19,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:19,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2022-07-12 10:45:19,540 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:19,745 INFO L129 PetriNetUnfolder]: 178/1187 cut-off events. [2022-07-12 10:45:19,745 INFO L130 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-07-12 10:45:19,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2381 conditions, 1187 events. 178/1187 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6912 event pairs, 14 based on Foata normal form. 6/1182 useless extension candidates. Maximal degree in co-relation 2365. Up to 156 conditions per place. [2022-07-12 10:45:19,756 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 27 selfloop transitions, 12 changer transitions 0/158 dead transitions. [2022-07-12 10:45:19,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 572 flow [2022-07-12 10:45:19,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:45:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:45:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1432 transitions. [2022-07-12 10:45:19,760 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8839506172839506 [2022-07-12 10:45:19,760 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1432 transitions. [2022-07-12 10:45:19,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1432 transitions. [2022-07-12 10:45:19,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:19,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1432 transitions. [2022-07-12 10:45:19,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.33333333333333) internal successors, (1432), 12 states have internal predecessors, (1432), 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 10:45:19,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 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 10:45:19,769 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 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 10:45:19,769 INFO L186 Difference]: Start difference. First operand has 152 places, 139 transitions, 430 flow. Second operand 12 states and 1432 transitions. [2022-07-12 10:45:19,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 572 flow [2022-07-12 10:45:19,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 158 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:45:19,775 INFO L242 Difference]: Finished difference. Result has 166 places, 143 transitions, 484 flow [2022-07-12 10:45:19,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=484, PETRI_PLACES=166, PETRI_TRANSITIONS=143} [2022-07-12 10:45:19,778 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 46 predicate places. [2022-07-12 10:45:19,778 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 143 transitions, 484 flow [2022-07-12 10:45:19,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.54545454545455) internal successors, (1304), 11 states have internal predecessors, (1304), 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 10:45:19,779 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:19,779 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:19,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:45:19,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:20,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:20,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash -522735746, now seen corresponding path program 6 times [2022-07-12 10:45:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:20,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784945498] [2022-07-12 10:45:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:20,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-12 10:45:20,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:20,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784945498] [2022-07-12 10:45:20,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784945498] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:45:20,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800575722] [2022-07-12 10:45:20,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-12 10:45:20,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:20,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:20,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:45:20,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:45:20,335 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-07-12 10:45:20,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:45:20,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:45:20,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:45:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-12 10:45:20,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:45:20,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800575722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:45:20,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:45:20,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 8 [2022-07-12 10:45:20,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810549632] [2022-07-12 10:45:20,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:45:20,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:45:20,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:20,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:45:20,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:45:20,406 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 135 [2022-07-12 10:45:20,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 143 transitions, 484 flow. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 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 10:45:20,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:20,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 135 [2022-07-12 10:45:20,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:20,619 INFO L129 PetriNetUnfolder]: 164/1206 cut-off events. [2022-07-12 10:45:20,619 INFO L130 PetriNetUnfolder]: For 611/611 co-relation queries the response was YES. [2022-07-12 10:45:20,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 1206 events. 164/1206 cut-off events. For 611/611 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6924 event pairs, 13 based on Foata normal form. 18/1220 useless extension candidates. Maximal degree in co-relation 2590. Up to 161 conditions per place. [2022-07-12 10:45:20,628 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 18 selfloop transitions, 15 changer transitions 0/152 dead transitions. [2022-07-12 10:45:20,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 152 transitions, 581 flow [2022-07-12 10:45:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:45:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:45:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 931 transitions. [2022-07-12 10:45:20,631 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.862037037037037 [2022-07-12 10:45:20,632 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 931 transitions. [2022-07-12 10:45:20,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 931 transitions. [2022-07-12 10:45:20,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:20,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 931 transitions. [2022-07-12 10:45:20,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 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 10:45:20,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 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 10:45:20,637 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 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 10:45:20,637 INFO L186 Difference]: Start difference. First operand has 166 places, 143 transitions, 484 flow. Second operand 8 states and 931 transitions. [2022-07-12 10:45:20,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 152 transitions, 581 flow [2022-07-12 10:45:20,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 152 transitions, 565 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-12 10:45:20,643 INFO L242 Difference]: Finished difference. Result has 169 places, 145 transitions, 531 flow [2022-07-12 10:45:20,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=531, PETRI_PLACES=169, PETRI_TRANSITIONS=145} [2022-07-12 10:45:20,644 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 49 predicate places. [2022-07-12 10:45:20,644 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 145 transitions, 531 flow [2022-07-12 10:45:20,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 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 10:45:20,645 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:20,645 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:20,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:45:20,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:20,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 731212494, now seen corresponding path program 7 times [2022-07-12 10:45:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:20,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851950433] [2022-07-12 10:45:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 10:45:20,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:20,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851950433] [2022-07-12 10:45:20,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851950433] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:45:20,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218043807] [2022-07-12 10:45:20,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-12 10:45:20,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:20,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:20,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:45:20,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:45:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:21,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:45:21,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:45:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 10:45:21,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:45:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 10:45:21,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218043807] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:45:21,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:45:21,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-07-12 10:45:21,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513184076] [2022-07-12 10:45:21,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:45:21,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:45:21,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:21,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:45:21,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:45:21,331 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2022-07-12 10:45:21,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 145 transitions, 531 flow. Second operand has 11 states, 11 states have (on average 120.18181818181819) internal successors, (1322), 11 states have internal predecessors, (1322), 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 10:45:21,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:21,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2022-07-12 10:45:21,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:21,568 INFO L129 PetriNetUnfolder]: 165/1290 cut-off events. [2022-07-12 10:45:21,569 INFO L130 PetriNetUnfolder]: For 807/812 co-relation queries the response was YES. [2022-07-12 10:45:21,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 1290 events. 165/1290 cut-off events. For 807/812 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7244 event pairs, 8 based on Foata normal form. 6/1294 useless extension candidates. Maximal degree in co-relation 2919. Up to 133 conditions per place. [2022-07-12 10:45:21,580 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 16 selfloop transitions, 12 changer transitions 0/155 dead transitions. [2022-07-12 10:45:21,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 155 transitions, 627 flow [2022-07-12 10:45:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:45:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:45:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1445 transitions. [2022-07-12 10:45:21,584 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8919753086419753 [2022-07-12 10:45:21,584 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1445 transitions. [2022-07-12 10:45:21,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1445 transitions. [2022-07-12 10:45:21,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:21,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1445 transitions. [2022-07-12 10:45:21,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 120.41666666666667) internal successors, (1445), 12 states have internal predecessors, (1445), 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 10:45:21,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 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 10:45:21,592 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 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 10:45:21,592 INFO L186 Difference]: Start difference. First operand has 169 places, 145 transitions, 531 flow. Second operand 12 states and 1445 transitions. [2022-07-12 10:45:21,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 155 transitions, 627 flow [2022-07-12 10:45:21,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 155 transitions, 603 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-07-12 10:45:21,599 INFO L242 Difference]: Finished difference. Result has 178 places, 149 transitions, 569 flow [2022-07-12 10:45:21,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=569, PETRI_PLACES=178, PETRI_TRANSITIONS=149} [2022-07-12 10:45:21,600 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 58 predicate places. [2022-07-12 10:45:21,600 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 149 transitions, 569 flow [2022-07-12 10:45:21,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 120.18181818181819) internal successors, (1322), 11 states have internal predecessors, (1322), 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 10:45:21,601 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:45:21,601 INFO L200 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:21,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-12 10:45:21,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:21,821 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:45:21,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:45:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1431588976, now seen corresponding path program 8 times [2022-07-12 10:45:21,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:45:21,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441251974] [2022-07-12 10:45:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:45:21,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:45:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:45:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:45:22,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:45:22,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441251974] [2022-07-12 10:45:22,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441251974] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:45:22,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641464085] [2022-07-12 10:45:22,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:45:22,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:45:22,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:45:22,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:45:22,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:45:22,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:45:22,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:45:22,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:45:22,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:45:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 5 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:45:23,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:45:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:45:23,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641464085] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:45:23,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:45:23,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 43 [2022-07-12 10:45:23,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502185854] [2022-07-12 10:45:23,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:45:23,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-12 10:45:23,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:45:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-12 10:45:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1677, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 10:45:23,914 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 135 [2022-07-12 10:45:23,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 149 transitions, 569 flow. Second operand has 43 states, 43 states have (on average 113.93023255813954) internal successors, (4899), 43 states have internal predecessors, (4899), 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 10:45:23,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:45:23,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 135 [2022-07-12 10:45:23,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:45:24,650 INFO L129 PetriNetUnfolder]: 162/1287 cut-off events. [2022-07-12 10:45:24,651 INFO L130 PetriNetUnfolder]: For 879/879 co-relation queries the response was YES. [2022-07-12 10:45:24,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2826 conditions, 1287 events. 162/1287 cut-off events. For 879/879 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7370 event pairs, 7 based on Foata normal form. 13/1297 useless extension candidates. Maximal degree in co-relation 2800. Up to 130 conditions per place. [2022-07-12 10:45:24,658 INFO L132 encePairwiseOnDemand]: 126/135 looper letters, 0 selfloop transitions, 0 changer transitions 159/159 dead transitions. [2022-07-12 10:45:24,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 159 transitions, 669 flow [2022-07-12 10:45:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:45:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:45:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2280 transitions. [2022-07-12 10:45:24,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-07-12 10:45:24,664 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2280 transitions. [2022-07-12 10:45:24,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2280 transitions. [2022-07-12 10:45:24,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:45:24,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2280 transitions. [2022-07-12 10:45:24,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 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 10:45:24,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 135.0) internal successors, (2835), 21 states have internal predecessors, (2835), 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 10:45:24,677 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 135.0) internal successors, (2835), 21 states have internal predecessors, (2835), 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 10:45:24,677 INFO L186 Difference]: Start difference. First operand has 178 places, 149 transitions, 569 flow. Second operand 20 states and 2280 transitions. [2022-07-12 10:45:24,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 159 transitions, 669 flow [2022-07-12 10:45:24,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 159 transitions, 651 flow, removed 2 selfloop flow, removed 7 redundant places. [2022-07-12 10:45:24,684 INFO L242 Difference]: Finished difference. Result has 188 places, 0 transitions, 0 flow [2022-07-12 10:45:24,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=188, PETRI_TRANSITIONS=0} [2022-07-12 10:45:24,686 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 68 predicate places. [2022-07-12 10:45:24,686 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 0 transitions, 0 flow [2022-07-12 10:45:24,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 113.93023255813954) internal successors, (4899), 43 states have internal predecessors, (4899), 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 10:45:24,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-12 10:45:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-12 10:45:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-12 10:45:24,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:45:24,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 10:45:24,916 INFO L356 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-07-12 10:45:24,920 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:45:24,920 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:45:24,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:45:24 BasicIcfg [2022-07-12 10:45:24,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:45:24,927 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:45:24,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:45:24,927 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:45:24,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:45:14" (3/4) ... [2022-07-12 10:45:24,930 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:45:24,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-12 10:45:24,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-12 10:45:24,940 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-07-12 10:45:24,941 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 10:45:24,941 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:45:24,941 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:45:24,989 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:45:24,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:45:24,991 INFO L158 Benchmark]: Toolchain (without parser) took 11227.99ms. Allocated memory was 90.2MB in the beginning and 201.3MB in the end (delta: 111.1MB). Free memory was 48.0MB in the beginning and 132.3MB in the end (delta: -84.3MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2022-07-12 10:45:24,991 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 65.6MB in the beginning and 65.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:45:24,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.62ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 47.7MB in the beginning and 66.2MB in the end (delta: -18.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 10:45:24,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.87ms. Allocated memory is still 113.2MB. Free memory was 66.2MB in the beginning and 64.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:45:24,991 INFO L158 Benchmark]: Boogie Preprocessor took 48.22ms. Allocated memory is still 113.2MB. Free memory was 64.1MB in the beginning and 62.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:45:24,992 INFO L158 Benchmark]: RCFGBuilder took 518.34ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 47.3MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-12 10:45:24,994 INFO L158 Benchmark]: TraceAbstraction took 10015.04ms. Allocated memory was 113.2MB in the beginning and 201.3MB in the end (delta: 88.1MB). Free memory was 47.0MB in the beginning and 135.1MB in the end (delta: -88.1MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. [2022-07-12 10:45:24,994 INFO L158 Benchmark]: Witness Printer took 62.66ms. Allocated memory is still 201.3MB. Free memory was 135.1MB in the beginning and 132.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:45:24,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 65.6MB in the beginning and 65.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.62ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 47.7MB in the beginning and 66.2MB in the end (delta: -18.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.87ms. Allocated memory is still 113.2MB. Free memory was 66.2MB in the beginning and 64.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.22ms. Allocated memory is still 113.2MB. Free memory was 64.1MB in the beginning and 62.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 518.34ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 47.3MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10015.04ms. Allocated memory was 113.2MB in the beginning and 201.3MB in the end (delta: 88.1MB). Free memory was 47.0MB in the beginning and 135.1MB in the end (delta: -88.1MB). Peak memory consumption was 89.4MB. Max. memory is 16.1GB. * Witness Printer took 62.66ms. Allocated memory is still 201.3MB. Free memory was 135.1MB in the beginning and 132.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 919]: 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 5 procedures, 171 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.8s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 200 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 434 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1142 IncrementalHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 58 mSDtfsCounter, 1142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1973 GetRequests, 1842 SyntacticMatches, 5 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=10, InterpolantAutomatonStates: 88, 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2597 NumberOfCodeBlocks, 2497 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3313 ConstructedInterpolants, 0 QuantifiedInterpolants, 8682 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2681 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 707/1491 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:45:25,016 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