./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD --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 f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:17:36,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:17:36,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:17:36,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:17:36,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:17:36,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:17:36,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:17:36,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:17:36,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:17:36,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:17:36,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:17:36,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:17:36,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:17:36,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:17:36,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:17:36,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:17:36,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:17:36,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:17:36,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:17:36,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:17:36,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:17:36,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:17:36,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:17:36,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:17:36,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:17:36,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:17:36,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:17:36,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:17:36,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:17:36,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:17:36,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:17:36,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:17:36,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:17:36,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:17:36,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:17:36,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:17:36,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:17:36,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:17:36,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:17:36,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:17:36,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:17:36,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:17:36,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:17:36,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:17:36,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:17:36,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:17:36,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:17:36,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:17:36,660 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:17:36,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:17:36,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:17:36,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:17:36,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:17:36,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:17:36,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:17:36,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:17:36,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:17:36,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:17:36,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:17:36,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:17:36,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:17:36,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:17:36,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:17:36,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:17:36,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:17:36,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:17:36,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:17:36,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:17:36,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:17:36,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:17:36,665 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:17:36,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:17:36,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:17:36,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:17:36,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2021-10-28 23:17:36,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:17:36,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:17:36,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:17:36,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:17:36,968 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:17:36,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i [2021-10-28 23:17:37,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/data/06aa1ec26/39fa58daedf24f3fa29958d47a0ef2d0/FLAGb16e0f34e [2021-10-28 23:17:37,644 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:17:37,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2021-10-28 23:17:37,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/data/06aa1ec26/39fa58daedf24f3fa29958d47a0ef2d0/FLAGb16e0f34e [2021-10-28 23:17:37,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/data/06aa1ec26/39fa58daedf24f3fa29958d47a0ef2d0 [2021-10-28 23:17:37,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:17:37,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:17:37,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:17:37,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:17:37,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:17:37,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:17:37" (1/1) ... [2021-10-28 23:17:37,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1ff540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:37, skipping insertion in model container [2021-10-28 23:17:37,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:17:37" (1/1) ... [2021-10-28 23:17:37,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:17:38,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:17:38,308 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2021-10-28 23:17:38,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:17:38,598 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:17:38,612 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/sv-benchmarks/c/pthread-wmm/safe017_tso.i[945,958] [2021-10-28 23:17:38,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:17:38,692 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:17:38,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38 WrapperNode [2021-10-28 23:17:38,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:17:38,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:17:38,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:17:38,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:17:38,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:17:38,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:17:38,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:17:38,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:17:38,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:17:38,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:17:38,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:17:38,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:17:38,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (1/1) ... [2021-10-28 23:17:38,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:17:38,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:17:38,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:17:38,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:17:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:17:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-28 23:17:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:17:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:17:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-28 23:17:38,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-28 23:17:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-28 23:17:38,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-28 23:17:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-28 23:17:38,914 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-28 23:17:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:17:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-28 23:17:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:17:38,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:17:38,917 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 23:17:39,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:17:39,300 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 23:17:39,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:17:39 BoogieIcfgContainer [2021-10-28 23:17:39,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:17:39,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:17:39,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:17:39,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:17:39,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:17:37" (1/3) ... [2021-10-28 23:17:39,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd83bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:17:39, skipping insertion in model container [2021-10-28 23:17:39,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:17:38" (2/3) ... [2021-10-28 23:17:39,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd83bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:17:39, skipping insertion in model container [2021-10-28 23:17:39,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:17:39" (3/3) ... [2021-10-28 23:17:39,312 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2021-10-28 23:17:39,317 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 23:17:39,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:17:39,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:17:39,318 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 23:17:39,347 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,348 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,350 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,351 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,352 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,352 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,353 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,353 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,354 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,355 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,355 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,355 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,355 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,356 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,356 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,356 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,357 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,358 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,362 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,367 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,367 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,368 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,368 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,374 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,375 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,375 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 23:17:39,382 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-28 23:17:39,437 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:17:39,443 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:17:39,443 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-28 23:17:39,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 81 transitions, 177 flow [2021-10-28 23:17:39,537 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-10-28 23:17:39,538 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:17:39,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-10-28 23:17:39,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 81 transitions, 177 flow [2021-10-28 23:17:39,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 66 transitions, 141 flow [2021-10-28 23:17:39,567 INFO L129 PetriNetUnfolder]: 1/65 cut-off events. [2021-10-28 23:17:39,568 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:17:39,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:17:39,569 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:39,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:17:39,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash -500719295, now seen corresponding path program 1 times [2021-10-28 23:17:39,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:39,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116464794] [2021-10-28 23:17:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:39,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:40,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:40,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116464794] [2021-10-28 23:17:40,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116464794] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:40,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:40,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:17:40,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286753675] [2021-10-28 23:17:40,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:17:40,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:17:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:17:40,088 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 81 [2021-10-28 23:17:40,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:40,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:17:40,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 81 [2021-10-28 23:17:40,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:17:40,259 INFO L129 PetriNetUnfolder]: 3/80 cut-off events. [2021-10-28 23:17:40,259 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-28 23:17:40,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 80 events. 3/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 4/83 useless extension candidates. Maximal degree in co-relation 81. Up to 7 conditions per place. [2021-10-28 23:17:40,262 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 6 selfloop transitions, 2 changer transitions 11/75 dead transitions. [2021-10-28 23:17:40,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 195 flow [2021-10-28 23:17:40,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:17:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:17:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 643 transitions. [2021-10-28 23:17:40,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8820301783264746 [2021-10-28 23:17:40,286 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 643 transitions. [2021-10-28 23:17:40,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 643 transitions. [2021-10-28 23:17:40,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:40,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 643 transitions. [2021-10-28 23:17:40,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.44444444444444) internal successors, (643), 9 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:40,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:40,313 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:40,316 INFO L186 Difference]: Start difference. First operand has 75 places, 66 transitions, 141 flow. Second operand 9 states and 643 transitions. [2021-10-28 23:17:40,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 195 flow [2021-10-28 23:17:40,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 192 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-28 23:17:40,326 INFO L242 Difference]: Finished difference. Result has 87 places, 64 transitions, 154 flow [2021-10-28 23:17:40,329 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=154, PETRI_PLACES=87, PETRI_TRANSITIONS=64} [2021-10-28 23:17:40,330 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2021-10-28 23:17:40,330 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 64 transitions, 154 flow [2021-10-28 23:17:40,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:40,331 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:17:40,332 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:40,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:17:40,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:17:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2012879902, now seen corresponding path program 1 times [2021-10-28 23:17:40,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:40,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440702085] [2021-10-28 23:17:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:40,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:40,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:40,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440702085] [2021-10-28 23:17:40,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440702085] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:40,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:40,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:17:40,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203229979] [2021-10-28 23:17:40,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:17:40,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:17:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:17:40,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2021-10-28 23:17:40,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 64 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:40,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:17:40,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2021-10-28 23:17:40,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:17:41,212 INFO L129 PetriNetUnfolder]: 199/602 cut-off events. [2021-10-28 23:17:41,212 INFO L130 PetriNetUnfolder]: For 191/267 co-relation queries the response was YES. [2021-10-28 23:17:41,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 602 events. 199/602 cut-off events. For 191/267 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3553 event pairs, 23 based on Foata normal form. 17/602 useless extension candidates. Maximal degree in co-relation 1131. Up to 103 conditions per place. [2021-10-28 23:17:41,248 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 18 selfloop transitions, 9 changer transitions 44/121 dead transitions. [2021-10-28 23:17:41,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 121 transitions, 456 flow [2021-10-28 23:17:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:17:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:17:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 893 transitions. [2021-10-28 23:17:41,257 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8480531813865148 [2021-10-28 23:17:41,257 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 893 transitions. [2021-10-28 23:17:41,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 893 transitions. [2021-10-28 23:17:41,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:41,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 893 transitions. [2021-10-28 23:17:41,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.6923076923077) internal successors, (893), 13 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:41,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:41,270 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:41,271 INFO L186 Difference]: Start difference. First operand has 87 places, 64 transitions, 154 flow. Second operand 13 states and 893 transitions. [2021-10-28 23:17:41,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 121 transitions, 456 flow [2021-10-28 23:17:41,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 121 transitions, 400 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-10-28 23:17:41,289 INFO L242 Difference]: Finished difference. Result has 96 places, 71 transitions, 233 flow [2021-10-28 23:17:41,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=233, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2021-10-28 23:17:41,291 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 21 predicate places. [2021-10-28 23:17:41,291 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 233 flow [2021-10-28 23:17:41,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:41,294 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:17:41,294 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:41,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:17:41,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:17:41,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:41,299 INFO L85 PathProgramCache]: Analyzing trace with hash 761073025, now seen corresponding path program 1 times [2021-10-28 23:17:41,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:41,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483617404] [2021-10-28 23:17:41,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:41,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:41,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:41,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483617404] [2021-10-28 23:17:41,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483617404] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:41,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:41,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:17:41,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668060526] [2021-10-28 23:17:41,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:17:41,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:41,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:17:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:17:41,570 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2021-10-28 23:17:41,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:41,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:17:41,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2021-10-28 23:17:41,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:17:41,881 INFO L129 PetriNetUnfolder]: 117/472 cut-off events. [2021-10-28 23:17:41,882 INFO L130 PetriNetUnfolder]: For 763/1136 co-relation queries the response was YES. [2021-10-28 23:17:41,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 472 events. 117/472 cut-off events. For 763/1136 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2791 event pairs, 1 based on Foata normal form. 18/480 useless extension candidates. Maximal degree in co-relation 1240. Up to 81 conditions per place. [2021-10-28 23:17:41,888 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 22 selfloop transitions, 12 changer transitions 40/124 dead transitions. [2021-10-28 23:17:41,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 124 transitions, 740 flow [2021-10-28 23:17:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:17:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-28 23:17:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 884 transitions. [2021-10-28 23:17:41,892 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8395061728395061 [2021-10-28 23:17:41,892 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 884 transitions. [2021-10-28 23:17:41,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 884 transitions. [2021-10-28 23:17:41,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:41,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 884 transitions. [2021-10-28 23:17:41,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.0) internal successors, (884), 13 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:41,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:41,900 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:41,900 INFO L186 Difference]: Start difference. First operand has 96 places, 71 transitions, 233 flow. Second operand 13 states and 884 transitions. [2021-10-28 23:17:41,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 124 transitions, 740 flow [2021-10-28 23:17:41,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 716 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-10-28 23:17:41,910 INFO L242 Difference]: Finished difference. Result has 108 places, 78 transitions, 373 flow [2021-10-28 23:17:41,910 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=373, PETRI_PLACES=108, PETRI_TRANSITIONS=78} [2021-10-28 23:17:41,910 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 33 predicate places. [2021-10-28 23:17:41,911 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 78 transitions, 373 flow [2021-10-28 23:17:41,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:41,911 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:17:41,912 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:41,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:17:41,912 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:17:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash -866932843, now seen corresponding path program 1 times [2021-10-28 23:17:41,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:41,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310538618] [2021-10-28 23:17:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:41,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:42,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:42,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310538618] [2021-10-28 23:17:42,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310538618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:42,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:42,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:17:42,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959086055] [2021-10-28 23:17:42,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:17:42,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:17:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:17:42,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 81 [2021-10-28 23:17:42,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 78 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:17:42,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 81 [2021-10-28 23:17:42,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:17:42,319 INFO L129 PetriNetUnfolder]: 31/278 cut-off events. [2021-10-28 23:17:42,320 INFO L130 PetriNetUnfolder]: For 1193/1526 co-relation queries the response was YES. [2021-10-28 23:17:42,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 278 events. 31/278 cut-off events. For 1193/1526 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1472 event pairs, 2 based on Foata normal form. 28/299 useless extension candidates. Maximal degree in co-relation 821. Up to 40 conditions per place. [2021-10-28 23:17:42,325 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 15 selfloop transitions, 5 changer transitions 17/97 dead transitions. [2021-10-28 23:17:42,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 97 transitions, 651 flow [2021-10-28 23:17:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:17:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 23:17:42,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 757 transitions. [2021-10-28 23:17:42,330 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8496071829405163 [2021-10-28 23:17:42,330 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 757 transitions. [2021-10-28 23:17:42,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 757 transitions. [2021-10-28 23:17:42,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:42,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 757 transitions. [2021-10-28 23:17:42,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.81818181818181) internal successors, (757), 11 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,340 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,340 INFO L186 Difference]: Start difference. First operand has 108 places, 78 transitions, 373 flow. Second operand 11 states and 757 transitions. [2021-10-28 23:17:42,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 97 transitions, 651 flow [2021-10-28 23:17:42,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 97 transitions, 583 flow, removed 34 selfloop flow, removed 3 redundant places. [2021-10-28 23:17:42,358 INFO L242 Difference]: Finished difference. Result has 114 places, 76 transitions, 346 flow [2021-10-28 23:17:42,359 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=114, PETRI_TRANSITIONS=76} [2021-10-28 23:17:42,359 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 39 predicate places. [2021-10-28 23:17:42,359 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 76 transitions, 346 flow [2021-10-28 23:17:42,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:17:42,361 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:42,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:17:42,361 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:17:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:42,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1612672954, now seen corresponding path program 1 times [2021-10-28 23:17:42,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:42,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109536590] [2021-10-28 23:17:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:42,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:42,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:42,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109536590] [2021-10-28 23:17:42,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109536590] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:42,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:42,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:17:42,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896388278] [2021-10-28 23:17:42,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:17:42,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:42,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:17:42,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:17:42,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 81 [2021-10-28 23:17:42,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 76 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:17:42,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 81 [2021-10-28 23:17:42,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:17:42,719 INFO L129 PetriNetUnfolder]: 34/262 cut-off events. [2021-10-28 23:17:42,719 INFO L130 PetriNetUnfolder]: For 1554/1856 co-relation queries the response was YES. [2021-10-28 23:17:42,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 262 events. 34/262 cut-off events. For 1554/1856 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1340 event pairs, 8 based on Foata normal form. 16/272 useless extension candidates. Maximal degree in co-relation 876. Up to 48 conditions per place. [2021-10-28 23:17:42,723 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 9 selfloop transitions, 5 changer transitions 19/89 dead transitions. [2021-10-28 23:17:42,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 89 transitions, 577 flow [2021-10-28 23:17:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:17:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 23:17:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 485 transitions. [2021-10-28 23:17:42,728 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.855379188712522 [2021-10-28 23:17:42,728 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 485 transitions. [2021-10-28 23:17:42,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 485 transitions. [2021-10-28 23:17:42,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:42,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 485 transitions. [2021-10-28 23:17:42,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,734 INFO L186 Difference]: Start difference. First operand has 114 places, 76 transitions, 346 flow. Second operand 7 states and 485 transitions. [2021-10-28 23:17:42,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 89 transitions, 577 flow [2021-10-28 23:17:42,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 89 transitions, 480 flow, removed 42 selfloop flow, removed 18 redundant places. [2021-10-28 23:17:42,744 INFO L242 Difference]: Finished difference. Result has 98 places, 70 transitions, 277 flow [2021-10-28 23:17:42,744 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=277, PETRI_PLACES=98, PETRI_TRANSITIONS=70} [2021-10-28 23:17:42,745 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 23 predicate places. [2021-10-28 23:17:42,745 INFO L470 AbstractCegarLoop]: Abstraction has has 98 places, 70 transitions, 277 flow [2021-10-28 23:17:42,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:17:42,746 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:42,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:17:42,747 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:17:42,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:42,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1334635296, now seen corresponding path program 1 times [2021-10-28 23:17:42,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:42,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594256342] [2021-10-28 23:17:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:42,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:42,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:42,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594256342] [2021-10-28 23:17:42,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594256342] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:42,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:42,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:17:42,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133532252] [2021-10-28 23:17:42,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:17:42,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:42,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:17:42,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:17:42,954 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-10-28 23:17:42,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 70 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:42,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:17:42,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-10-28 23:17:42,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:17:43,185 INFO L129 PetriNetUnfolder]: 258/699 cut-off events. [2021-10-28 23:17:43,185 INFO L130 PetriNetUnfolder]: For 312/330 co-relation queries the response was YES. [2021-10-28 23:17:43,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 699 events. 258/699 cut-off events. For 312/330 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4627 event pairs, 9 based on Foata normal form. 25/669 useless extension candidates. Maximal degree in co-relation 1354. Up to 239 conditions per place. [2021-10-28 23:17:43,195 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 10 selfloop transitions, 6 changer transitions 19/95 dead transitions. [2021-10-28 23:17:43,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 397 flow [2021-10-28 23:17:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:17:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 23:17:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 640 transitions. [2021-10-28 23:17:43,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.877914951989026 [2021-10-28 23:17:43,200 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 640 transitions. [2021-10-28 23:17:43,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 640 transitions. [2021-10-28 23:17:43,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:43,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 640 transitions. [2021-10-28 23:17:43,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.11111111111111) internal successors, (640), 9 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,210 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,210 INFO L186 Difference]: Start difference. First operand has 98 places, 70 transitions, 277 flow. Second operand 9 states and 640 transitions. [2021-10-28 23:17:43,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 397 flow [2021-10-28 23:17:43,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 364 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-10-28 23:17:43,220 INFO L242 Difference]: Finished difference. Result has 101 places, 73 transitions, 300 flow [2021-10-28 23:17:43,220 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=101, PETRI_TRANSITIONS=73} [2021-10-28 23:17:43,221 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 26 predicate places. [2021-10-28 23:17:43,221 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 73 transitions, 300 flow [2021-10-28 23:17:43,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,222 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:17:43,222 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:43,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:17:43,223 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:17:43,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash -954144770, now seen corresponding path program 1 times [2021-10-28 23:17:43,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:43,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916786462] [2021-10-28 23:17:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:43,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:43,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:43,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916786462] [2021-10-28 23:17:43,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916786462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:43,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:43,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:17:43,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807837124] [2021-10-28 23:17:43,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:17:43,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:43,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:17:43,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:17:43,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-10-28 23:17:43,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 73 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,395 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:17:43,395 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-10-28 23:17:43,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:17:43,613 INFO L129 PetriNetUnfolder]: 130/419 cut-off events. [2021-10-28 23:17:43,614 INFO L130 PetriNetUnfolder]: For 828/927 co-relation queries the response was YES. [2021-10-28 23:17:43,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 419 events. 130/419 cut-off events. For 828/927 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2409 event pairs, 0 based on Foata normal form. 42/442 useless extension candidates. Maximal degree in co-relation 1439. Up to 193 conditions per place. [2021-10-28 23:17:43,618 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 6 selfloop transitions, 9 changer transitions 25/98 dead transitions. [2021-10-28 23:17:43,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 98 transitions, 553 flow [2021-10-28 23:17:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:17:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 23:17:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 710 transitions. [2021-10-28 23:17:43,623 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8765432098765432 [2021-10-28 23:17:43,623 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 710 transitions. [2021-10-28 23:17:43,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 710 transitions. [2021-10-28 23:17:43,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:43,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 710 transitions. [2021-10-28 23:17:43,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.0) internal successors, (710), 10 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,636 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,637 INFO L186 Difference]: Start difference. First operand has 101 places, 73 transitions, 300 flow. Second operand 10 states and 710 transitions. [2021-10-28 23:17:43,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 98 transitions, 553 flow [2021-10-28 23:17:43,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 518 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-10-28 23:17:43,645 INFO L242 Difference]: Finished difference. Result has 106 places, 73 transitions, 326 flow [2021-10-28 23:17:43,645 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=326, PETRI_PLACES=106, PETRI_TRANSITIONS=73} [2021-10-28 23:17:43,646 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 31 predicate places. [2021-10-28 23:17:43,646 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 73 transitions, 326 flow [2021-10-28 23:17:43,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,647 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 23:17:43,647 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:43,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:17:43,648 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-28 23:17:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:17:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1351931023, now seen corresponding path program 1 times [2021-10-28 23:17:43,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:17:43,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125790042] [2021-10-28 23:17:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:17:43,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:17:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:17:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:17:43,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:17:43,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125790042] [2021-10-28 23:17:43,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125790042] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:17:43,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:17:43,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:17:43,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922838496] [2021-10-28 23:17:43,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:17:43,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:17:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:17:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:17:43,824 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-10-28 23:17:43,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 73 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:43,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 23:17:43,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-10-28 23:17:43,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 23:17:44,004 INFO L129 PetriNetUnfolder]: 25/195 cut-off events. [2021-10-28 23:17:44,004 INFO L130 PetriNetUnfolder]: For 752/869 co-relation queries the response was YES. [2021-10-28 23:17:44,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 195 events. 25/195 cut-off events. For 752/869 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 900 event pairs, 0 based on Foata normal form. 43/234 useless extension candidates. Maximal degree in co-relation 696. Up to 61 conditions per place. [2021-10-28 23:17:44,006 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2021-10-28 23:17:44,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 78 transitions, 458 flow [2021-10-28 23:17:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:17:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 23:17:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 765 transitions. [2021-10-28 23:17:44,011 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8585858585858586 [2021-10-28 23:17:44,011 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 765 transitions. [2021-10-28 23:17:44,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 765 transitions. [2021-10-28 23:17:44,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:17:44,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 765 transitions. [2021-10-28 23:17:44,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.54545454545455) internal successors, (765), 11 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:44,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:44,019 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 81.0) internal successors, (972), 12 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:44,020 INFO L186 Difference]: Start difference. First operand has 106 places, 73 transitions, 326 flow. Second operand 11 states and 765 transitions. [2021-10-28 23:17:44,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 78 transitions, 458 flow [2021-10-28 23:17:44,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 355 flow, removed 32 selfloop flow, removed 13 redundant places. [2021-10-28 23:17:44,027 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2021-10-28 23:17:44,027 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2021-10-28 23:17:44,028 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2021-10-28 23:17:44,028 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2021-10-28 23:17:44,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:17:44,032 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:17:44,032 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 23:17:44,033 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 23:17:44,035 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 23:17:44,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:17:44,040 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:17:44,045 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 23:17:44,045 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:17:44,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:17:44 BasicIcfg [2021-10-28 23:17:44,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:17:44,050 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:17:44,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:17:44,051 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:17:44,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:17:39" (3/4) ... [2021-10-28 23:17:44,056 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:17:44,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-28 23:17:44,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-28 23:17:44,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-28 23:17:44,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-28 23:17:44,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:17:44,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:17:44,073 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:17:44,135 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:17:44,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:17:44,137 INFO L168 Benchmark]: Toolchain (without parser) took 6191.42 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 63.1 MB in the beginning and 32.7 MB in the end (delta: 30.4 MB). Peak memory consumption was 56.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:44,137 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory is still 36.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:17:44,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.24 ms. Allocated memory is still 96.5 MB. Free memory was 62.9 MB in the beginning and 64.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:44,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.91 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:44,139 INFO L168 Benchmark]: Boogie Preprocessor took 31.65 ms. Allocated memory is still 96.5 MB. Free memory was 62.1 MB in the beginning and 60.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:44,139 INFO L168 Benchmark]: RCFGBuilder took 518.76 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 49.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:44,140 INFO L168 Benchmark]: TraceAbstraction took 4744.45 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 48.7 MB in the beginning and 35.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:44,140 INFO L168 Benchmark]: Witness Printer took 85.26 ms. Allocated memory is still 121.6 MB. Free memory was 35.8 MB in the beginning and 32.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:17:44,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory is still 36.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 742.24 ms. Allocated memory is still 96.5 MB. Free memory was 62.9 MB in the beginning and 64.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.91 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.65 ms. Allocated memory is still 96.5 MB. Free memory was 62.1 MB in the beginning and 60.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 518.76 ms. Allocated memory is still 96.5 MB. Free memory was 60.7 MB in the beginning and 49.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4744.45 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 48.7 MB in the beginning and 35.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 16.1 GB. * Witness Printer took 85.26 ms. Allocated memory is still 121.6 MB. Free memory was 35.8 MB in the beginning and 32.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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, 103 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: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 215 SDslu, 320 SDs, 0 SdLazy, 336 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=3, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 406 ConstructedInterpolants, 0 QuantifiedInterpolants, 1154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:17:44,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8a6bc8-4115-4679-8f32-9f2cf630a216/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...