./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe005_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa --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 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:02:39,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:02:39,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:02:39,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:02:39,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:02:39,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:02:39,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:02:39,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:02:39,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:02:39,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:02:39,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:02:39,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:02:39,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:02:39,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:02:39,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:02:39,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:02:39,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:02:39,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:02:39,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:02:39,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:02:39,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:02:39,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:02:39,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:02:39,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:02:39,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:02:39,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:02:39,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:02:39,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:02:39,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:02:39,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:02:39,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:02:39,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:02:39,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:02:39,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:02:39,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:02:39,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:02:39,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:02:39,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:02:39,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:02:39,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:02:39,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:02:39,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:02:39,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:02:39,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:02:39,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:02:39,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:02:39,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:02:39,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:02:39,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:02:39,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:02:39,718 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:02:39,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:02:39,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:02:39,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:02:39,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:02:39,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:02:39,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:02:39,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:02:39,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:02:39,719 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:02:39,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:02:39,719 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:02:39,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:02:39,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:02:39,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:02:39,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:02:39,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:02:39,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:02:39,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:02:39,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:02:39,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:02:39,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:02:39,721 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:02:39,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:02:39,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:02:39,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:02:39,722 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_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce [2021-12-06 22:02:39,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:02:39,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:02:39,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:02:39,916 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:02:39,916 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:02:39,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-12-06 22:02:39,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/data/44353d69b/0b5caff74b974e4a9ca841a6628b87ca/FLAG998e29120 [2021-12-06 22:02:40,379 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:02:40,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/sv-benchmarks/c/pthread-wmm/safe005_tso.i [2021-12-06 22:02:40,390 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/data/44353d69b/0b5caff74b974e4a9ca841a6628b87ca/FLAG998e29120 [2021-12-06 22:02:40,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/data/44353d69b/0b5caff74b974e4a9ca841a6628b87ca [2021-12-06 22:02:40,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:02:40,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:02:40,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:02:40,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:02:40,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:02:40,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569fba78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40, skipping insertion in model container [2021-12-06 22:02:40,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:02:40,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:02:40,580 WARN L230 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_53fbfd8d-1a47-455f-bdc9-810f095a8397/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2021-12-06 22:02:40,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:02:40,686 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:02:40,695 WARN L230 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_53fbfd8d-1a47-455f-bdc9-810f095a8397/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2021-12-06 22:02:40,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:02:40,746 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:02:40,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40 WrapperNode [2021-12-06 22:02:40,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:02:40,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:02:40,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:02:40,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:02:40,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,780 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2021-12-06 22:02:40,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:02:40,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:02:40,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:02:40,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:02:40,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:02:40,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:02:40,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:02:40,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:02:40,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (1/1) ... [2021-12-06 22:02:40,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:02:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:02:40,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:02:40,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:02:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:02:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 22:02:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:02:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:02:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:02:40,865 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-06 22:02:40,865 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-06 22:02:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-06 22:02:40,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-06 22:02:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-06 22:02:40,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-06 22:02:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:02:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 22:02:40,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:02:40,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:02:40,867 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 22:02:40,954 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:02:40,955 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:02:41,093 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:02:41,098 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:02:41,099 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:02:41,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:02:41 BoogieIcfgContainer [2021-12-06 22:02:41,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:02:41,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:02:41,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:02:41,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:02:41,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:02:40" (1/3) ... [2021-12-06 22:02:41,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e626ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:02:41, skipping insertion in model container [2021-12-06 22:02:41,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:02:40" (2/3) ... [2021-12-06 22:02:41,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e626ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:02:41, skipping insertion in model container [2021-12-06 22:02:41,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:02:41" (3/3) ... [2021-12-06 22:02:41,106 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2021-12-06 22:02:41,110 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 22:02:41,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:02:41,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:02:41,111 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 22:02:41,133 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,133 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,133 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,133 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,134 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,134 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,134 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,134 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,134 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,134 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,135 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,135 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,135 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,135 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,135 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,135 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,135 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,136 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,136 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,136 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,136 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,136 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,136 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,136 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,137 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,137 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,137 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,137 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,137 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,137 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,138 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,138 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,138 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,138 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,138 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,138 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,141 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,141 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,141 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,141 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,144 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,144 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,144 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,144 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,145 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,145 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,146 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,146 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 22:02:41,146 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-06 22:02:41,181 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:02:41,186 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:02:41,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 22:02:41,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2021-12-06 22:02:41,229 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2021-12-06 22:02:41,229 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 22:02:41,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-06 22:02:41,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2021-12-06 22:02:41,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2021-12-06 22:02:41,250 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2021-12-06 22:02:41,250 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-06 22:02:41,251 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 22:02:41,251 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] [2021-12-06 22:02:41,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 22:02:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1011825075, now seen corresponding path program 1 times [2021-12-06 22:02:41,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:41,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420387410] [2021-12-06 22:02:41,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:41,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:02:41,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:41,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420387410] [2021-12-06 22:02:41,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420387410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:41,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:41,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:02:41,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189347413] [2021-12-06 22:02:41,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:41,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:02:41,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:41,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:02:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:02:41,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-06 22:02:41,669 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:41,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 22:02:41,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-06 22:02:41,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 22:02:41,932 INFO L129 PetriNetUnfolder]: 290/709 cut-off events. [2021-12-06 22:02:41,932 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-12-06 22:02:41,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 709 events. 290/709 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3801 event pairs, 11 based on Foata normal form. 31/708 useless extension candidates. Maximal degree in co-relation 1200. Up to 110 conditions per place. [2021-12-06 22:02:41,939 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 21 selfloop transitions, 6 changer transitions 45/128 dead transitions. [2021-12-06 22:02:41,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 409 flow [2021-12-06 22:02:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:02:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 22:02:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 988 transitions. [2021-12-06 22:02:41,953 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2021-12-06 22:02:41,953 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 988 transitions. [2021-12-06 22:02:41,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 988 transitions. [2021-12-06 22:02:41,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:02:41,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 988 transitions. [2021-12-06 22:02:41,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.0) internal successors, (988), 13 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:41,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:41,974 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:41,975 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 988 transitions. [2021-12-06 22:02:41,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 409 flow [2021-12-06 22:02:41,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 128 transitions, 406 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-06 22:02:41,983 INFO L242 Difference]: Finished difference. Result has 105 places, 78 transitions, 240 flow [2021-12-06 22:02:41,985 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=240, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2021-12-06 22:02:41,988 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2021-12-06 22:02:41,988 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 240 flow [2021-12-06 22:02:41,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:41,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 22:02:41,989 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, 1, 1, 1] [2021-12-06 22:02:41,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:02:41,990 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 22:02:41,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:41,990 INFO L85 PathProgramCache]: Analyzing trace with hash -149277267, now seen corresponding path program 1 times [2021-12-06 22:02:41,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:41,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300126525] [2021-12-06 22:02:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:41,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:02:42,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:42,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300126525] [2021-12-06 22:02:42,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300126525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:42,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:42,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:02:42,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094441146] [2021-12-06 22:02:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:42,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:02:42,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:42,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:02:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:02:42,126 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-06 22:02:42,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 22:02:42,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-06 22:02:42,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 22:02:42,298 INFO L129 PetriNetUnfolder]: 148/544 cut-off events. [2021-12-06 22:02:42,298 INFO L130 PetriNetUnfolder]: For 1165/1935 co-relation queries the response was YES. [2021-12-06 22:02:42,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 544 events. 148/544 cut-off events. For 1165/1935 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3086 event pairs, 2 based on Foata normal form. 16/542 useless extension candidates. Maximal degree in co-relation 1617. Up to 120 conditions per place. [2021-12-06 22:02:42,305 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 22 selfloop transitions, 9 changer transitions 31/118 dead transitions. [2021-12-06 22:02:42,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 118 transitions, 662 flow [2021-12-06 22:02:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:02:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-06 22:02:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2021-12-06 22:02:42,309 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8274456521739131 [2021-12-06 22:02:42,309 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2021-12-06 22:02:42,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2021-12-06 22:02:42,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:02:42,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2021-12-06 22:02:42,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,315 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,315 INFO L186 Difference]: Start difference. First operand has 105 places, 78 transitions, 240 flow. Second operand 8 states and 609 transitions. [2021-12-06 22:02:42,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 118 transitions, 662 flow [2021-12-06 22:02:42,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 118 transitions, 631 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-12-06 22:02:42,323 INFO L242 Difference]: Finished difference. Result has 104 places, 80 transitions, 278 flow [2021-12-06 22:02:42,324 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=278, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2021-12-06 22:02:42,324 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2021-12-06 22:02:42,324 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 278 flow [2021-12-06 22:02:42,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,325 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 22:02:42,325 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, 1, 1, 1, 1] [2021-12-06 22:02:42,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:02:42,325 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 22:02:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1467782811, now seen corresponding path program 1 times [2021-12-06 22:02:42,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:42,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945492114] [2021-12-06 22:02:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:42,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:02:42,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:42,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945492114] [2021-12-06 22:02:42,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945492114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:42,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:42,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:02:42,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736821684] [2021-12-06 22:02:42,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:42,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:02:42,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:42,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:02:42,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:02:42,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2021-12-06 22:02:42,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 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) [2021-12-06 22:02:42,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 22:02:42,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2021-12-06 22:02:42,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 22:02:42,502 INFO L129 PetriNetUnfolder]: 33/213 cut-off events. [2021-12-06 22:02:42,502 INFO L130 PetriNetUnfolder]: For 502/596 co-relation queries the response was YES. [2021-12-06 22:02:42,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 213 events. 33/213 cut-off events. For 502/596 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 803 event pairs, 5 based on Foata normal form. 11/214 useless extension candidates. Maximal degree in co-relation 558. Up to 37 conditions per place. [2021-12-06 22:02:42,504 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 3 changer transitions 13/93 dead transitions. [2021-12-06 22:02:42,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 93 transitions, 426 flow [2021-12-06 22:02:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:02:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 22:02:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2021-12-06 22:02:42,508 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2021-12-06 22:02:42,508 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2021-12-06 22:02:42,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2021-12-06 22:02:42,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:02:42,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2021-12-06 22:02:42,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,515 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,515 INFO L186 Difference]: Start difference. First operand has 104 places, 80 transitions, 278 flow. Second operand 9 states and 716 transitions. [2021-12-06 22:02:42,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 93 transitions, 426 flow [2021-12-06 22:02:42,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 93 transitions, 377 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-12-06 22:02:42,523 INFO L242 Difference]: Finished difference. Result has 110 places, 80 transitions, 268 flow [2021-12-06 22:02:42,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=268, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2021-12-06 22:02:42,524 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 26 predicate places. [2021-12-06 22:02:42,524 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 268 flow [2021-12-06 22:02:42,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 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) [2021-12-06 22:02:42,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 22:02:42,525 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, 1, 1, 1, 1, 1] [2021-12-06 22:02:42,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:02:42,525 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 22:02:42,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:42,526 INFO L85 PathProgramCache]: Analyzing trace with hash 262329859, now seen corresponding path program 1 times [2021-12-06 22:02:42,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:42,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906340560] [2021-12-06 22:02:42,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:42,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:02:42,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:42,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906340560] [2021-12-06 22:02:42,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906340560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:42,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:42,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:02:42,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334911879] [2021-12-06 22:02:42,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:42,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:02:42,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:02:42,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:02:42,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2021-12-06 22:02:42,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 22:02:42,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2021-12-06 22:02:42,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 22:02:42,788 INFO L129 PetriNetUnfolder]: 28/263 cut-off events. [2021-12-06 22:02:42,788 INFO L130 PetriNetUnfolder]: For 507/1050 co-relation queries the response was YES. [2021-12-06 22:02:42,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 263 events. 28/263 cut-off events. For 507/1050 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1289 event pairs, 8 based on Foata normal form. 8/260 useless extension candidates. Maximal degree in co-relation 677. Up to 37 conditions per place. [2021-12-06 22:02:42,791 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 23 selfloop transitions, 7 changer transitions 24/110 dead transitions. [2021-12-06 22:02:42,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 110 transitions, 598 flow [2021-12-06 22:02:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:02:42,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 22:02:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 961 transitions. [2021-12-06 22:02:42,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8035117056856187 [2021-12-06 22:02:42,796 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 961 transitions. [2021-12-06 22:02:42,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 961 transitions. [2021-12-06 22:02:42,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:02:42,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 961 transitions. [2021-12-06 22:02:42,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.92307692307692) internal successors, (961), 13 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,804 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,804 INFO L186 Difference]: Start difference. First operand has 110 places, 80 transitions, 268 flow. Second operand 13 states and 961 transitions. [2021-12-06 22:02:42,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 110 transitions, 598 flow [2021-12-06 22:02:42,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 518 flow, removed 35 selfloop flow, removed 9 redundant places. [2021-12-06 22:02:42,811 INFO L242 Difference]: Finished difference. Result has 119 places, 79 transitions, 289 flow [2021-12-06 22:02:42,811 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=289, PETRI_PLACES=119, PETRI_TRANSITIONS=79} [2021-12-06 22:02:42,812 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 35 predicate places. [2021-12-06 22:02:42,812 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 79 transitions, 289 flow [2021-12-06 22:02:42,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,813 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 22:02:42,813 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:02:42,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:02:42,814 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 22:02:42,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:42,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2110763618, now seen corresponding path program 1 times [2021-12-06 22:02:42,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:42,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665150857] [2021-12-06 22:02:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:42,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:02:42,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:42,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665150857] [2021-12-06 22:02:42,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665150857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:42,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:42,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:02:42,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005930021] [2021-12-06 22:02:42,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:42,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:02:42,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:42,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:02:42,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:02:42,909 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-06 22:02:42,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 79 transitions, 289 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:42,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 22:02:42,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-06 22:02:42,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 22:02:43,083 INFO L129 PetriNetUnfolder]: 419/1108 cut-off events. [2021-12-06 22:02:43,084 INFO L130 PetriNetUnfolder]: For 700/716 co-relation queries the response was YES. [2021-12-06 22:02:43,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1108 events. 419/1108 cut-off events. For 700/716 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8137 event pairs, 19 based on Foata normal form. 3/1017 useless extension candidates. Maximal degree in co-relation 2288. Up to 290 conditions per place. [2021-12-06 22:02:43,091 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 17 selfloop transitions, 8 changer transitions 21/111 dead transitions. [2021-12-06 22:02:43,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 449 flow [2021-12-06 22:02:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:02:43,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 22:02:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2021-12-06 22:02:43,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2021-12-06 22:02:43,095 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2021-12-06 22:02:43,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2021-12-06 22:02:43,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:02:43,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2021-12-06 22:02:43,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,102 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,102 INFO L186 Difference]: Start difference. First operand has 119 places, 79 transitions, 289 flow. Second operand 10 states and 798 transitions. [2021-12-06 22:02:43,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 449 flow [2021-12-06 22:02:43,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 401 flow, removed 19 selfloop flow, removed 14 redundant places. [2021-12-06 22:02:43,109 INFO L242 Difference]: Finished difference. Result has 113 places, 85 transitions, 317 flow [2021-12-06 22:02:43,110 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=317, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2021-12-06 22:02:43,110 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2021-12-06 22:02:43,111 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 317 flow [2021-12-06 22:02:43,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,111 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 22:02:43,111 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:02:43,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:02:43,112 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 22:02:43,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1451553419, now seen corresponding path program 1 times [2021-12-06 22:02:43,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:43,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433622194] [2021-12-06 22:02:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:43,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:02:43,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:43,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433622194] [2021-12-06 22:02:43,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433622194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:43,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:43,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:02:43,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712712847] [2021-12-06 22:02:43,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:43,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:02:43,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:02:43,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:02:43,200 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-06 22:02:43,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 317 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 22:02:43,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-06 22:02:43,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 22:02:43,399 INFO L129 PetriNetUnfolder]: 205/741 cut-off events. [2021-12-06 22:02:43,399 INFO L130 PetriNetUnfolder]: For 1401/1849 co-relation queries the response was YES. [2021-12-06 22:02:43,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2358 conditions, 741 events. 205/741 cut-off events. For 1401/1849 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5264 event pairs, 4 based on Foata normal form. 71/775 useless extension candidates. Maximal degree in co-relation 2303. Up to 304 conditions per place. [2021-12-06 22:02:43,406 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 17 selfloop transitions, 11 changer transitions 21/114 dead transitions. [2021-12-06 22:02:43,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 114 transitions, 607 flow [2021-12-06 22:02:43,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:02:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 22:02:43,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 951 transitions. [2021-12-06 22:02:43,410 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8614130434782609 [2021-12-06 22:02:43,411 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 951 transitions. [2021-12-06 22:02:43,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 951 transitions. [2021-12-06 22:02:43,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:02:43,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 951 transitions. [2021-12-06 22:02:43,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.25) internal successors, (951), 12 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 92.0) internal successors, (1196), 13 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,418 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 92.0) internal successors, (1196), 13 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,418 INFO L186 Difference]: Start difference. First operand has 113 places, 85 transitions, 317 flow. Second operand 12 states and 951 transitions. [2021-12-06 22:02:43,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 114 transitions, 607 flow [2021-12-06 22:02:43,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 114 transitions, 594 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-12-06 22:02:43,425 INFO L242 Difference]: Finished difference. Result has 123 places, 88 transitions, 395 flow [2021-12-06 22:02:43,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=123, PETRI_TRANSITIONS=88} [2021-12-06 22:02:43,426 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 39 predicate places. [2021-12-06 22:02:43,426 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 88 transitions, 395 flow [2021-12-06 22:02:43,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,427 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 22:02:43,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:02:43,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:02:43,427 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 22:02:43,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1117564018, now seen corresponding path program 1 times [2021-12-06 22:02:43,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:43,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116770598] [2021-12-06 22:02:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:43,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:02:43,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:43,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116770598] [2021-12-06 22:02:43,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116770598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:43,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:43,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:02:43,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048926032] [2021-12-06 22:02:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:43,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:02:43,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:02:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:02:43,513 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-06 22:02:43,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 88 transitions, 395 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 22:02:43,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-06 22:02:43,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 22:02:43,674 INFO L129 PetriNetUnfolder]: 76/422 cut-off events. [2021-12-06 22:02:43,674 INFO L130 PetriNetUnfolder]: For 2040/2519 co-relation queries the response was YES. [2021-12-06 22:02:43,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 422 events. 76/422 cut-off events. For 2040/2519 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2625 event pairs, 0 based on Foata normal form. 89/487 useless extension candidates. Maximal degree in co-relation 1509. Up to 146 conditions per place. [2021-12-06 22:02:43,678 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 11 selfloop transitions, 14 changer transitions 15/105 dead transitions. [2021-12-06 22:02:43,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 105 transitions, 621 flow [2021-12-06 22:02:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:02:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 22:02:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1017 transitions. [2021-12-06 22:02:43,682 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503344481605352 [2021-12-06 22:02:43,682 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1017 transitions. [2021-12-06 22:02:43,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1017 transitions. [2021-12-06 22:02:43,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:02:43,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1017 transitions. [2021-12-06 22:02:43,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.23076923076923) internal successors, (1017), 13 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,690 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,690 INFO L186 Difference]: Start difference. First operand has 123 places, 88 transitions, 395 flow. Second operand 13 states and 1017 transitions. [2021-12-06 22:02:43,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 105 transitions, 621 flow [2021-12-06 22:02:43,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 105 transitions, 502 flow, removed 46 selfloop flow, removed 15 redundant places. [2021-12-06 22:02:43,698 INFO L242 Difference]: Finished difference. Result has 122 places, 88 transitions, 365 flow [2021-12-06 22:02:43,698 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=365, PETRI_PLACES=122, PETRI_TRANSITIONS=88} [2021-12-06 22:02:43,699 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2021-12-06 22:02:43,699 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 88 transitions, 365 flow [2021-12-06 22:02:43,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,699 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 22:02:43,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:02:43,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:02:43,700 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 22:02:43,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:02:43,700 INFO L85 PathProgramCache]: Analyzing trace with hash 878679217, now seen corresponding path program 1 times [2021-12-06 22:02:43,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:02:43,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552411891] [2021-12-06 22:02:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:02:43,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:02:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:02:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:02:43,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:02:43,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552411891] [2021-12-06 22:02:43,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552411891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:02:43,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:02:43,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:02:43,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578526601] [2021-12-06 22:02:43,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:02:43,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:02:43,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:02:43,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:02:43,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:02:43,774 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2021-12-06 22:02:43,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 88 transitions, 365 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 22:02:43,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2021-12-06 22:02:43,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 22:02:43,863 INFO L129 PetriNetUnfolder]: 53/394 cut-off events. [2021-12-06 22:02:43,864 INFO L130 PetriNetUnfolder]: For 753/808 co-relation queries the response was YES. [2021-12-06 22:02:43,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 394 events. 53/394 cut-off events. For 753/808 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2397 event pairs, 2 based on Foata normal form. 4/376 useless extension candidates. Maximal degree in co-relation 974. Up to 87 conditions per place. [2021-12-06 22:02:43,866 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2021-12-06 22:02:43,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 89 transitions, 407 flow [2021-12-06 22:02:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:02:43,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 22:02:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 541 transitions. [2021-12-06 22:02:43,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8400621118012422 [2021-12-06 22:02:43,867 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 541 transitions. [2021-12-06 22:02:43,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 541 transitions. [2021-12-06 22:02:43,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:02:43,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 541 transitions. [2021-12-06 22:02:43,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,871 INFO L186 Difference]: Start difference. First operand has 122 places, 88 transitions, 365 flow. Second operand 7 states and 541 transitions. [2021-12-06 22:02:43,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 89 transitions, 407 flow [2021-12-06 22:02:43,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 89 transitions, 332 flow, removed 19 selfloop flow, removed 13 redundant places. [2021-12-06 22:02:43,875 INFO L242 Difference]: Finished difference. Result has 109 places, 0 transitions, 0 flow [2021-12-06 22:02:43,875 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=109, PETRI_TRANSITIONS=0} [2021-12-06 22:02:43,875 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2021-12-06 22:02:43,875 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 0 transitions, 0 flow [2021-12-06 22:02:43,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:02:43,878 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-06 22:02:43,878 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-06 22:02:43,878 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-06 22:02:43,878 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-06 22:02:43,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:02:43,881 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:02:43,883 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 22:02:43,883 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:02:43,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:02:43 BasicIcfg [2021-12-06 22:02:43,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:02:43,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:02:43,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:02:43,886 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:02:43,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:02:41" (3/4) ... [2021-12-06 22:02:43,889 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 22:02:43,893 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-06 22:02:43,893 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-06 22:02:43,893 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-06 22:02:43,896 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-06 22:02:43,897 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 22:02:43,897 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 22:02:43,897 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 22:02:43,920 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 22:02:43,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:02:43,921 INFO L158 Benchmark]: Toolchain (without parser) took 3516.49ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 60.4MB in the beginning and 42.7MB in the end (delta: 17.7MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2021-12-06 22:02:43,921 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:02:43,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.93ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 60.2MB in the beginning and 95.2MB in the end (delta: -35.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:02:43,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.91ms. Allocated memory is still 130.0MB. Free memory was 95.2MB in the beginning and 93.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:02:43,923 INFO L158 Benchmark]: Boogie Preprocessor took 18.90ms. Allocated memory is still 130.0MB. Free memory was 93.1MB in the beginning and 92.4MB in the end (delta: 748.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:02:43,923 INFO L158 Benchmark]: RCFGBuilder took 300.59ms. Allocated memory is still 130.0MB. Free memory was 91.7MB in the beginning and 79.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 22:02:43,923 INFO L158 Benchmark]: TraceAbstraction took 2783.96ms. Allocated memory is still 130.0MB. Free memory was 79.1MB in the beginning and 45.9MB in the end (delta: 33.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-12-06 22:02:43,924 INFO L158 Benchmark]: Witness Printer took 34.49ms. Allocated memory is still 130.0MB. Free memory was 45.9MB in the beginning and 42.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:02:43,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory is still 50.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.93ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 60.2MB in the beginning and 95.2MB in the end (delta: -35.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.91ms. Allocated memory is still 130.0MB. Free memory was 95.2MB in the beginning and 93.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.90ms. Allocated memory is still 130.0MB. Free memory was 93.1MB in the beginning and 92.4MB in the end (delta: 748.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 300.59ms. Allocated memory is still 130.0MB. Free memory was 91.7MB in the beginning and 79.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2783.96ms. Allocated memory is still 130.0MB. Free memory was 79.1MB in the beginning and 45.9MB in the end (delta: 33.3MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 34.49ms. Allocated memory is still 130.0MB. Free memory was 45.9MB in the beginning and 42.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 115 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: 2.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 312 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 384 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 391 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 484 IncrementalHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 92 mSDtfsCounter, 484 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=395occurred in iteration=6, InterpolantAutomatonStates: 85, 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, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 494 NumberOfCodeBlocks, 494 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 486 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 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! [2021-12-06 22:02:43,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53fbfd8d-1a47-455f-bdc9-810f095a8397/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE