./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c -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 44a86740b4b3d791346dd5ab0675f134d34312247f7633c0f06bf117457d4ce2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:14:53,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:14:53,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:14:53,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:14:53,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:14:53,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:14:53,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:14:53,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:14:53,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:14:53,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:14:53,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:14:53,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:14:53,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:14:53,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:14:53,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:14:53,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:14:53,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:14:53,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:14:53,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:14:53,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:14:53,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:14:53,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:14:53,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:14:53,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:14:53,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:14:53,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:14:53,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:14:53,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:14:53,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:14:53,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:14:53,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:14:53,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:14:53,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:14:53,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:14:53,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:14:53,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:14:53,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:14:53,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:14:53,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:14:53,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:14:53,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:14:53,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:14:53,694 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:14:53,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:14:53,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:14:53,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:14:53,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:14:53,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:14:53,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:14:53,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:14:53,698 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:14:53,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:14:53,699 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:14:53,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:14:53,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:14:53,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:14:53,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:14:53,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:14:53,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:14:53,701 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:14:53,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:14:53,701 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:14:53,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:14:53,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:14:53,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:14:53,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:14:53,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:14:53,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:14:53,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:14:53,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:14:53,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:14:53,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:14:53,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:14:53,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:14:53,704 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:14:53,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:14:53,704 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:14:53,704 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a86740b4b3d791346dd5ab0675f134d34312247f7633c0f06bf117457d4ce2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:14:54,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:14:54,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:14:54,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:14:54,035 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:14:54,035 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:14:54,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2023-08-31 01:14:55,137 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:14:55,307 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:14:55,307 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2023-08-31 01:14:55,315 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947e1e5a3/97205098c7384479a825cd752546b63e/FLAG12482dcef [2023-08-31 01:14:55,335 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947e1e5a3/97205098c7384479a825cd752546b63e [2023-08-31 01:14:55,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:14:55,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:14:55,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:14:55,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:14:55,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:14:55,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3a18b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55, skipping insertion in model container [2023-08-31 01:14:55,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:14:55,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:14:55,511 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c[3481,3494] [2023-08-31 01:14:55,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:14:55,525 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:14:55,545 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c[3481,3494] [2023-08-31 01:14:55,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:14:55,554 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:14:55,554 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:14:55,559 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:14:55,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55 WrapperNode [2023-08-31 01:14:55,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:14:55,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:14:55,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:14:55,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:14:55,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,599 INFO L138 Inliner]: procedures = 23, calls = 45, calls flagged for inlining = 17, calls inlined = 39, statements flattened = 361 [2023-08-31 01:14:55,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:14:55,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:14:55,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:14:55,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:14:55,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,630 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:14:55,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:14:55,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:14:55,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:14:55,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (1/1) ... [2023-08-31 01:14:55,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:14:55,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:14:55,665 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) [2023-08-31 01:14:55,674 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 [2023-08-31 01:14:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:14:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:14:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:14:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:14:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:14:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:14:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:14:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:14:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:14:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:14:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 01:14:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 01:14:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:14:55,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:14:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:14:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:14:55,699 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:14:55,814 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:14:55,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:14:56,294 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:14:56,823 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:14:56,824 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 01:14:56,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:14:56 BoogieIcfgContainer [2023-08-31 01:14:56,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:14:56,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:14:56,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:14:56,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:14:56,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:14:55" (1/3) ... [2023-08-31 01:14:56,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1caf9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:14:56, skipping insertion in model container [2023-08-31 01:14:56,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:14:55" (2/3) ... [2023-08-31 01:14:56,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1caf9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:14:56, skipping insertion in model container [2023-08-31 01:14:56,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:14:56" (3/3) ... [2023-08-31 01:14:56,833 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2023-08-31 01:14:56,841 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:14:56,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:14:56,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:14:56,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:14:56,935 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:14:56,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 132 transitions, 288 flow [2023-08-31 01:14:57,071 INFO L130 PetriNetUnfolder]: 1/129 cut-off events. [2023-08-31 01:14:57,072 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:14:57,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 1/129 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-31 01:14:57,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 132 transitions, 288 flow [2023-08-31 01:14:57,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 119 transitions, 256 flow [2023-08-31 01:14:57,085 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:14:57,102 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 119 transitions, 256 flow [2023-08-31 01:14:57,106 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 119 transitions, 256 flow [2023-08-31 01:14:57,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 119 transitions, 256 flow [2023-08-31 01:14:57,148 INFO L130 PetriNetUnfolder]: 1/119 cut-off events. [2023-08-31 01:14:57,149 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:14:57,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 119 events. 1/119 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2023-08-31 01:14:57,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 270 [2023-08-31 01:15:05,918 INFO L134 LiptonReduction]: Checked pairs total: 460 [2023-08-31 01:15:05,918 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-31 01:15:05,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:15:05,935 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@610bd44d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:15:05,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:15:05,943 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-31 01:15:05,943 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:15:05,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:05,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:05,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:15:05,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1335539198, now seen corresponding path program 1 times [2023-08-31 01:15:05,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450231762] [2023-08-31 01:15:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:05,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:09,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:09,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450231762] [2023-08-31 01:15:09,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450231762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:09,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:09,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:09,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708171333] [2023-08-31 01:15:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:09,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:09,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:09,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:09,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 238 [2023-08-31 01:15:09,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:09,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:09,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 238 [2023-08-31 01:15:09,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:10,020 INFO L130 PetriNetUnfolder]: 38/100 cut-off events. [2023-08-31 01:15:10,021 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-31 01:15:10,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 282 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-08-31 01:15:10,024 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-08-31 01:15:10,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-08-31 01:15:10,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 610 transitions. [2023-08-31 01:15:10,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271708683473389 [2023-08-31 01:15:10,049 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 610 transitions. [2023-08-31 01:15:10,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 610 transitions. [2023-08-31 01:15:10,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:10,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 610 transitions. [2023-08-31 01:15:10,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:10,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:10,068 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:10,070 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 610 transitions. [2023-08-31 01:15:10,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-08-31 01:15:10,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:15:10,074 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-08-31 01:15:10,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-31 01:15:10,079 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-31 01:15:10,080 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-08-31 01:15:10,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:10,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:10,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:10,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:15:10,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:15:10,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1392752308, now seen corresponding path program 2 times [2023-08-31 01:15:10,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:10,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042232106] [2023-08-31 01:15:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:10,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:11,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:11,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042232106] [2023-08-31 01:15:11,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042232106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:11,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:11,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:11,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238155399] [2023-08-31 01:15:11,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:11,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:12,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 238 [2023-08-31 01:15:12,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:12,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:12,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 238 [2023-08-31 01:15:12,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:12,292 INFO L130 PetriNetUnfolder]: 39/119 cut-off events. [2023-08-31 01:15:12,292 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-08-31 01:15:12,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 119 events. 39/119 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 425 event pairs, 9 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 317. Up to 60 conditions per place. [2023-08-31 01:15:12,294 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 28 selfloop transitions, 9 changer transitions 5/42 dead transitions. [2023-08-31 01:15:12,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 219 flow [2023-08-31 01:15:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:15:12,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:15:12,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 510 transitions. [2023-08-31 01:15:12,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-31 01:15:12,297 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 510 transitions. [2023-08-31 01:15:12,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 510 transitions. [2023-08-31 01:15:12,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:12,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 510 transitions. [2023-08-31 01:15:12,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2023-08-31 01:15:12,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 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) [2023-08-31 01:15:12,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 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) [2023-08-31 01:15:12,302 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 5 states and 510 transitions. [2023-08-31 01:15:12,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 219 flow [2023-08-31 01:15:12,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 215 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-31 01:15:12,305 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 118 flow [2023-08-31 01:15:12,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-31 01:15:12,307 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-08-31 01:15:12,307 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 118 flow [2023-08-31 01:15:12,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:12,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:12,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:12,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:15:12,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:15:12,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash -159030358, now seen corresponding path program 3 times [2023-08-31 01:15:12,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:12,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151686061] [2023-08-31 01:15:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:12,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:14,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151686061] [2023-08-31 01:15:14,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151686061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:14,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467298545] [2023-08-31 01:15:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:14,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:14,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:14,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 238 [2023-08-31 01:15:14,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:14,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:14,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 238 [2023-08-31 01:15:14,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:14,883 INFO L130 PetriNetUnfolder]: 39/118 cut-off events. [2023-08-31 01:15:14,883 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-08-31 01:15:14,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 118 events. 39/118 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 432 event pairs, 2 based on Foata normal form. 1/119 useless extension candidates. Maximal degree in co-relation 220. Up to 53 conditions per place. [2023-08-31 01:15:14,885 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 27 selfloop transitions, 7 changer transitions 12/46 dead transitions. [2023-08-31 01:15:14,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 280 flow [2023-08-31 01:15:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:14,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 608 transitions. [2023-08-31 01:15:14,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257703081232493 [2023-08-31 01:15:14,889 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 608 transitions. [2023-08-31 01:15:14,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 608 transitions. [2023-08-31 01:15:14,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:14,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 608 transitions. [2023-08-31 01:15:14,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.33333333333333) internal successors, (608), 6 states have internal predecessors, (608), 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) [2023-08-31 01:15:14,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:14,894 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:14,894 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 118 flow. Second operand 6 states and 608 transitions. [2023-08-31 01:15:14,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 280 flow [2023-08-31 01:15:14,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 273 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-31 01:15:14,897 INFO L231 Difference]: Finished difference. Result has 38 places, 21 transitions, 120 flow [2023-08-31 01:15:14,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=38, PETRI_TRANSITIONS=21} [2023-08-31 01:15:14,898 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-31 01:15:14,898 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 21 transitions, 120 flow [2023-08-31 01:15:14,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:14,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:14,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:14,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:15:14,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:15:14,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash 994545194, now seen corresponding path program 4 times [2023-08-31 01:15:14,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:14,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832207433] [2023-08-31 01:15:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:14,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:16,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832207433] [2023-08-31 01:15:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832207433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:16,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:16,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663653153] [2023-08-31 01:15:16,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:16,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:16,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:16,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:17,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 238 [2023-08-31 01:15:17,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:17,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:17,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 238 [2023-08-31 01:15:17,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:17,253 INFO L130 PetriNetUnfolder]: 18/62 cut-off events. [2023-08-31 01:15:17,253 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-08-31 01:15:17,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 62 events. 18/62 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 1/63 useless extension candidates. Maximal degree in co-relation 234. Up to 22 conditions per place. [2023-08-31 01:15:17,256 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 18 selfloop transitions, 6 changer transitions 13/37 dead transitions. [2023-08-31 01:15:17,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 241 flow [2023-08-31 01:15:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:17,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2023-08-31 01:15:17,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2023-08-31 01:15:17,261 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2023-08-31 01:15:17,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2023-08-31 01:15:17,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:17,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2023-08-31 01:15:17,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2023-08-31 01:15:17,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:17,267 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:17,267 INFO L175 Difference]: Start difference. First operand has 38 places, 21 transitions, 120 flow. Second operand 6 states and 600 transitions. [2023-08-31 01:15:17,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 241 flow [2023-08-31 01:15:17,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 211 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-31 01:15:17,271 INFO L231 Difference]: Finished difference. Result has 37 places, 19 transitions, 93 flow [2023-08-31 01:15:17,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93, PETRI_PLACES=37, PETRI_TRANSITIONS=19} [2023-08-31 01:15:17,273 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-31 01:15:17,273 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 93 flow [2023-08-31 01:15:17,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:17,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:17,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:17,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:15:17,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:15:17,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:17,275 INFO L85 PathProgramCache]: Analyzing trace with hash 196870180, now seen corresponding path program 5 times [2023-08-31 01:15:17,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:17,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927719747] [2023-08-31 01:15:17,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:17,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:19,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:19,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927719747] [2023-08-31 01:15:19,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927719747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:19,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:19,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:19,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824161540] [2023-08-31 01:15:19,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:19,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:19,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:19,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:19,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 238 [2023-08-31 01:15:19,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:19,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:19,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 238 [2023-08-31 01:15:19,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:19,978 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-31 01:15:19,978 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-08-31 01:15:19,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 40 events. 8/40 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 139. Up to 19 conditions per place. [2023-08-31 01:15:19,979 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-31 01:15:19,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 179 flow [2023-08-31 01:15:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 595 transitions. [2023-08-31 01:15:19,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-31 01:15:19,982 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 595 transitions. [2023-08-31 01:15:19,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 595 transitions. [2023-08-31 01:15:19,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:19,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 595 transitions. [2023-08-31 01:15:19,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.16666666666667) internal successors, (595), 6 states have internal predecessors, (595), 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) [2023-08-31 01:15:19,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:19,987 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:19,987 INFO L175 Difference]: Start difference. First operand has 37 places, 19 transitions, 93 flow. Second operand 6 states and 595 transitions. [2023-08-31 01:15:19,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 179 flow [2023-08-31 01:15:19,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 153 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-31 01:15:19,989 INFO L231 Difference]: Finished difference. Result has 34 places, 16 transitions, 58 flow [2023-08-31 01:15:19,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=16} [2023-08-31 01:15:19,990 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-08-31 01:15:19,991 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 16 transitions, 58 flow [2023-08-31 01:15:19,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:19,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:15:19,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:15:19,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:15:19,992 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:15:19,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:15:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1119287124, now seen corresponding path program 6 times [2023-08-31 01:15:19,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:15:19,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677643025] [2023-08-31 01:15:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:15:19,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:15:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:15:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:15:21,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:15:21,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677643025] [2023-08-31 01:15:21,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677643025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:15:21,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:15:21,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 01:15:21,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897423978] [2023-08-31 01:15:21,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:15:21,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 01:15:21,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:15:21,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 01:15:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:15:21,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 238 [2023-08-31 01:15:21,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 16 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:21,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:15:21,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 238 [2023-08-31 01:15:21,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:15:22,064 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-31 01:15:22,064 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 01:15:22,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 63. Up to 8 conditions per place. [2023-08-31 01:15:22,065 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-31 01:15:22,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 18 transitions, 96 flow [2023-08-31 01:15:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:15:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:15:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 583 transitions. [2023-08-31 01:15:22,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40826330532212884 [2023-08-31 01:15:22,067 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 583 transitions. [2023-08-31 01:15:22,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 583 transitions. [2023-08-31 01:15:22,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:15:22,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 583 transitions. [2023-08-31 01:15:22,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.16666666666667) internal successors, (583), 6 states have internal predecessors, (583), 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) [2023-08-31 01:15:22,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:22,073 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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) [2023-08-31 01:15:22,073 INFO L175 Difference]: Start difference. First operand has 34 places, 16 transitions, 58 flow. Second operand 6 states and 583 transitions. [2023-08-31 01:15:22,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 18 transitions, 96 flow [2023-08-31 01:15:22,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-31 01:15:22,074 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-31 01:15:22,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-31 01:15:22,074 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-31 01:15:22,075 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-31 01:15:22,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:15:22,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-31 01:15:22,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-31 01:15:22,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-31 01:15:22,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-31 01:15:22,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:15:22,079 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-31 01:15:22,081 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 01:15:22,081 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 01:15:22,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 01:15:22 BasicIcfg [2023-08-31 01:15:22,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 01:15:22,084 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 01:15:22,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 01:15:22,085 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 01:15:22,085 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:14:56" (3/4) ... [2023-08-31 01:15:22,087 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 01:15:22,091 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 01:15:22,092 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 01:15:22,092 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-31 01:15:22,095 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-31 01:15:22,096 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 01:15:22,096 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 01:15:22,096 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 01:15:22,129 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 01:15:22,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 01:15:22,129 INFO L158 Benchmark]: Toolchain (without parser) took 26790.91ms. Allocated memory was 65.0MB in the beginning and 499.1MB in the end (delta: 434.1MB). Free memory was 33.4MB in the beginning and 315.4MB in the end (delta: -282.1MB). Peak memory consumption was 151.9MB. Max. memory is 16.1GB. [2023-08-31 01:15:22,130 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 29.9MB in the beginning and 29.8MB in the end (delta: 50.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 01:15:22,130 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.33ms. Allocated memory is still 65.0MB. Free memory was 33.2MB in the beginning and 37.3MB in the end (delta: -4.1MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-08-31 01:15:22,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.17ms. Allocated memory is still 65.0MB. Free memory was 37.3MB in the beginning and 34.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:15:22,130 INFO L158 Benchmark]: Boogie Preprocessor took 35.47ms. Allocated memory is still 65.0MB. Free memory was 34.3MB in the beginning and 32.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 01:15:22,131 INFO L158 Benchmark]: RCFGBuilder took 1189.57ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 32.3MB in the beginning and 48.9MB in the end (delta: -16.7MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-08-31 01:15:22,131 INFO L158 Benchmark]: TraceAbstraction took 25256.23ms. Allocated memory was 79.7MB in the beginning and 499.1MB in the end (delta: 419.4MB). Free memory was 48.4MB in the beginning and 319.6MB in the end (delta: -271.3MB). Peak memory consumption was 148.3MB. Max. memory is 16.1GB. [2023-08-31 01:15:22,131 INFO L158 Benchmark]: Witness Printer took 44.61ms. Allocated memory is still 499.1MB. Free memory was 319.6MB in the beginning and 315.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 01:15:22,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 29.9MB in the beginning and 29.8MB in the end (delta: 50.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.33ms. Allocated memory is still 65.0MB. Free memory was 33.2MB in the beginning and 37.3MB in the end (delta: -4.1MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.17ms. Allocated memory is still 65.0MB. Free memory was 37.3MB in the beginning and 34.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.47ms. Allocated memory is still 65.0MB. Free memory was 34.3MB in the beginning and 32.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1189.57ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 32.3MB in the beginning and 48.9MB in the end (delta: -16.7MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * TraceAbstraction took 25256.23ms. Allocated memory was 79.7MB in the beginning and 499.1MB in the end (delta: 419.4MB). Free memory was 48.4MB in the beginning and 319.6MB in the end (delta: -271.3MB). Peak memory consumption was 148.3MB. Max. memory is 16.1GB. * Witness Printer took 44.61ms. Allocated memory is still 499.1MB. Free memory was 319.6MB in the beginning and 315.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.8s, 128 PlacesBefore, 26 PlacesAfterwards, 119 TransitionsBefore, 16 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 8 FixpointIterations, 84 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 106 TotalNumberOfCompositions, 460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 460, independent: 460, independent conditional: 0, independent unconditional: 460, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 167, independent: 167, independent conditional: 0, independent unconditional: 167, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 460, independent: 293, independent conditional: 0, independent unconditional: 293, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 167, unknown conditional: 0, unknown unconditional: 167] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 100]: 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 7 procedures, 147 locations, 4 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: 25.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 515 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 322 mSDsluCounter, 342 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 222 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 831 IncrementalHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 120 mSDtfsCounter, 831 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=3, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 01:15:22,156 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