./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --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_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/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_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/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_479715fe-73e1-4cca-8108-da12caaecf55/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 b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:19:00,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:19:00,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:19:00,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:19:00,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:19:00,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:19:00,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:19:00,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:19:00,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:19:00,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:19:00,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:19:00,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:19:00,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:19:00,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:19:00,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:19:00,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:19:00,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:19:00,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:19:00,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:19:00,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:19:00,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:19:00,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:19:00,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:19:00,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:19:00,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:19:00,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:19:00,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:19:00,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:19:00,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:19:00,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:19:00,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:19:00,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:19:00,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:19:00,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:19:00,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:19:00,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:19:00,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:19:00,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:19:00,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:19:00,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:19:00,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:19:00,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:19:00,889 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:19:00,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:19:00,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:19:00,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:19:00,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:19:00,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:19:00,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:19:00,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:19:00,892 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:19:00,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:19:00,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:19:00,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:19:00,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:19:00,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:19:00,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:19:00,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:19:00,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:19:00,894 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:19:00,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:19:00,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:19:00,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:19:00,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:19:00,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:19:00,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:19:00,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:19:00,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:19:00,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:19:00,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:19:00,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:19:00,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:19:00,896 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:19:00,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:19:00,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:19:00,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:19:00,897 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_479715fe-73e1-4cca-8108-da12caaecf55/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b699de581afb3d801299d89a35eee78f9e3cb86ad1a23fab537b92eb394c5e62 [2021-12-06 20:19:01,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:19:01,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:19:01,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:19:01,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:19:01,085 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:19:01,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2021-12-06 20:19:01,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/data/14575267a/cbaf86decc7f413d933e1e424e9109d3/FLAG17667b5cc [2021-12-06 20:19:01,498 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:19:01,499 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2021-12-06 20:19:01,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/data/14575267a/cbaf86decc7f413d933e1e424e9109d3/FLAG17667b5cc [2021-12-06 20:19:01,516 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/data/14575267a/cbaf86decc7f413d933e1e424e9109d3 [2021-12-06 20:19:01,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:19:01,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:19:01,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:19:01,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:19:01,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:19:01,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22014ec8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01, skipping insertion in model container [2021-12-06 20:19:01,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:19:01,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:19:01,676 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_479715fe-73e1-4cca-8108-da12caaecf55/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2021-12-06 20:19:01,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:19:01,684 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:19:01,700 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_479715fe-73e1-4cca-8108-da12caaecf55/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2856,2869] [2021-12-06 20:19:01,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:19:01,711 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:19:01,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01 WrapperNode [2021-12-06 20:19:01,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:19:01,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:19:01,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:19:01,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:19:01,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,738 INFO L137 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2021-12-06 20:19:01,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:19:01,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:19:01,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:19:01,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:19:01,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:19:01,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:19:01,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:19:01,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:19:01,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (1/1) ... [2021-12-06 20:19:01,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:19:01,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:01,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:19:01,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:19:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:19:01,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-06 20:19:01,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-06 20:19:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-06 20:19:01,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-06 20:19:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-06 20:19:01,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-06 20:19:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:19:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:19:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:19:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-06 20:19:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-06 20:19:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:19:01,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:19:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:19:01,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:19:01,822 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 20:19:01,883 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:19:01,884 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:19:02,042 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:19:02,062 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:19:02,062 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 20:19:02,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:19:02 BoogieIcfgContainer [2021-12-06 20:19:02,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:19:02,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:19:02,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:19:02,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:19:02,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:19:01" (1/3) ... [2021-12-06 20:19:02,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7458c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:19:02, skipping insertion in model container [2021-12-06 20:19:02,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:19:01" (2/3) ... [2021-12-06 20:19:02,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7458c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:19:02, skipping insertion in model container [2021-12-06 20:19:02,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:19:02" (3/3) ... [2021-12-06 20:19:02,070 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2021-12-06 20:19:02,074 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 20:19:02,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:19:02,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:19:02,074 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 20:19:02,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,099 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,100 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,101 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,105 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,106 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,106 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,106 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,106 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,107 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,109 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,110 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,111 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,112 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 20:19:02,115 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-06 20:19:02,152 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:19:02,158 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 20:19:02,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 20:19:02,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 129 transitions, 282 flow [2021-12-06 20:19:02,212 INFO L129 PetriNetUnfolder]: 16/126 cut-off events. [2021-12-06 20:19:02,213 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 20:19:02,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 16/126 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2021-12-06 20:19:02,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 129 transitions, 282 flow [2021-12-06 20:19:02,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 115 transitions, 248 flow [2021-12-06 20:19:02,248 INFO L129 PetriNetUnfolder]: 16/114 cut-off events. [2021-12-06 20:19:02,248 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 20:19:02,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:02,249 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, 1, 1, 1, 1] [2021-12-06 20:19:02,249 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 20:19:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:02,253 INFO L85 PathProgramCache]: Analyzing trace with hash -620095962, now seen corresponding path program 1 times [2021-12-06 20:19:02,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:02,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717391283] [2021-12-06 20:19:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:02,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,433 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 20:19:02,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:02,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717391283] [2021-12-06 20:19:02,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717391283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:02,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:02,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:19:02,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831496309] [2021-12-06 20:19:02,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:02,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:19:02,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:19:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:19:02,474 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 129 [2021-12-06 20:19:02,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 248 flow. Second operand has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 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 20:19:02,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:02,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 129 [2021-12-06 20:19:02,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:02,519 INFO L129 PetriNetUnfolder]: 22/133 cut-off events. [2021-12-06 20:19:02,520 INFO L130 PetriNetUnfolder]: For 15/16 co-relation queries the response was YES. [2021-12-06 20:19:02,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 133 events. 22/133 cut-off events. For 15/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 211 event pairs, 2 based on Foata normal form. 13/127 useless extension candidates. Maximal degree in co-relation 103. Up to 15 conditions per place. [2021-12-06 20:19:02,522 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 8 selfloop transitions, 0 changer transitions 1/111 dead transitions. [2021-12-06 20:19:02,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 256 flow [2021-12-06 20:19:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:19:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-06 20:19:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 244 transitions. [2021-12-06 20:19:02,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9457364341085271 [2021-12-06 20:19:02,533 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 244 transitions. [2021-12-06 20:19:02,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 244 transitions. [2021-12-06 20:19:02,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:02,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 244 transitions. [2021-12-06 20:19:02,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 122.0) internal successors, (244), 2 states have internal predecessors, (244), 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 20:19:02,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 20:19:02,543 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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 20:19:02,545 INFO L186 Difference]: Start difference. First operand has 109 places, 115 transitions, 248 flow. Second operand 2 states and 244 transitions. [2021-12-06 20:19:02,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 256 flow [2021-12-06 20:19:02,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 111 transitions, 244 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-06 20:19:02,551 INFO L242 Difference]: Finished difference. Result has 104 places, 110 transitions, 226 flow [2021-12-06 20:19:02,553 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=226, PETRI_PLACES=104, PETRI_TRANSITIONS=110} [2021-12-06 20:19:02,556 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, -5 predicate places. [2021-12-06 20:19:02,556 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 110 transitions, 226 flow [2021-12-06 20:19:02,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 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 20:19:02,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:02,556 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, 1, 1, 1, 1] [2021-12-06 20:19:02,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:19:02,557 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 20:19:02,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2011730583, now seen corresponding path program 1 times [2021-12-06 20:19:02,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:02,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157505259] [2021-12-06 20:19:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:02,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,645 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 20:19:02,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:02,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157505259] [2021-12-06 20:19:02,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157505259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:02,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:02,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:19:02,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907805709] [2021-12-06 20:19:02,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:02,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:02,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:02,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:19:02,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2021-12-06 20:19:02,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 20:19:02,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:02,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2021-12-06 20:19:02,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:02,696 INFO L129 PetriNetUnfolder]: 41/193 cut-off events. [2021-12-06 20:19:02,696 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 20:19:02,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 193 events. 41/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 544 event pairs, 4 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 255. Up to 31 conditions per place. [2021-12-06 20:19:02,699 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 17 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2021-12-06 20:19:02,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 116 transitions, 278 flow [2021-12-06 20:19:02,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 20:19:02,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2021-12-06 20:19:02,702 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2021-12-06 20:19:02,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2021-12-06 20:19:02,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2021-12-06 20:19:02,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:02,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2021-12-06 20:19:02,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 20:19:02,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:02,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:02,707 INFO L186 Difference]: Start difference. First operand has 104 places, 110 transitions, 226 flow. Second operand 3 states and 353 transitions. [2021-12-06 20:19:02,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 116 transitions, 278 flow [2021-12-06 20:19:02,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 116 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 20:19:02,716 INFO L242 Difference]: Finished difference. Result has 106 places, 111 transitions, 238 flow [2021-12-06 20:19:02,716 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=106, PETRI_TRANSITIONS=111} [2021-12-06 20:19:02,717 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2021-12-06 20:19:02,717 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 111 transitions, 238 flow [2021-12-06 20:19:02,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 20:19:02,717 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:02,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:02,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:19:02,718 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 20:19:02,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:02,718 INFO L85 PathProgramCache]: Analyzing trace with hash 464963149, now seen corresponding path program 1 times [2021-12-06 20:19:02,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:02,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135624898] [2021-12-06 20:19:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:02,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:02,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:02,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135624898] [2021-12-06 20:19:02,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135624898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:02,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:02,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:19:02,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280412135] [2021-12-06 20:19:02,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:02,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:02,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:02,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:02,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:19:02,807 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-12-06 20:19:02,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 111 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 20:19:02,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:02,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-12-06 20:19:02,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:02,858 INFO L129 PetriNetUnfolder]: 55/217 cut-off events. [2021-12-06 20:19:02,858 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-06 20:19:02,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 217 events. 55/217 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 807 event pairs, 4 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 344. Up to 72 conditions per place. [2021-12-06 20:19:02,862 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 18 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2021-12-06 20:19:02,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 116 transitions, 290 flow [2021-12-06 20:19:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 20:19:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-12-06 20:19:02,865 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8992248062015504 [2021-12-06 20:19:02,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-12-06 20:19:02,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-12-06 20:19:02,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:02,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-12-06 20:19:02,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 20:19:02,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:02,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:02,870 INFO L186 Difference]: Start difference. First operand has 106 places, 111 transitions, 238 flow. Second operand 3 states and 348 transitions. [2021-12-06 20:19:02,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 116 transitions, 290 flow [2021-12-06 20:19:02,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 116 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 20:19:02,875 INFO L242 Difference]: Finished difference. Result has 108 places, 112 transitions, 248 flow [2021-12-06 20:19:02,875 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2021-12-06 20:19:02,876 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, -1 predicate places. [2021-12-06 20:19:02,876 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 248 flow [2021-12-06 20:19:02,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 20:19:02,877 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:02,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:02,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:19:02,877 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 20:19:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash -618881529, now seen corresponding path program 1 times [2021-12-06 20:19:02,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:02,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704190358] [2021-12-06 20:19:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:02,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:19:02,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:02,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704190358] [2021-12-06 20:19:02,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704190358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:02,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:02,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:19:02,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315680047] [2021-12-06 20:19:02,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:02,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:02,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:19:02,955 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2021-12-06 20:19:02,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:02,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:02,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2021-12-06 20:19:02,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:03,026 INFO L129 PetriNetUnfolder]: 154/500 cut-off events. [2021-12-06 20:19:03,026 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-06 20:19:03,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 500 events. 154/500 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2355 event pairs, 17 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 688. Up to 85 conditions per place. [2021-12-06 20:19:03,031 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 17 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2021-12-06 20:19:03,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 118 transitions, 300 flow [2021-12-06 20:19:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 20:19:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2021-12-06 20:19:03,033 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2021-12-06 20:19:03,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2021-12-06 20:19:03,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2021-12-06 20:19:03,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:03,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2021-12-06 20:19:03,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 20:19:03,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:03,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:03,037 INFO L186 Difference]: Start difference. First operand has 108 places, 112 transitions, 248 flow. Second operand 3 states and 353 transitions. [2021-12-06 20:19:03,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 118 transitions, 300 flow [2021-12-06 20:19:03,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 118 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 20:19:03,039 INFO L242 Difference]: Finished difference. Result has 110 places, 113 transitions, 258 flow [2021-12-06 20:19:03,040 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=110, PETRI_TRANSITIONS=113} [2021-12-06 20:19:03,040 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 1 predicate places. [2021-12-06 20:19:03,041 INFO L470 AbstractCegarLoop]: Abstraction has has 110 places, 113 transitions, 258 flow [2021-12-06 20:19:03,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:03,041 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:03,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:03,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:19:03,041 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 20:19:03,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1312628711, now seen corresponding path program 1 times [2021-12-06 20:19:03,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:03,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61655783] [2021-12-06 20:19:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:03,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:19:03,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:03,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61655783] [2021-12-06 20:19:03,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61655783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:03,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:03,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:19:03,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274856684] [2021-12-06 20:19:03,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:03,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:03,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:19:03,095 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2021-12-06 20:19:03,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 113 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:03,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:03,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2021-12-06 20:19:03,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:03,152 INFO L129 PetriNetUnfolder]: 104/394 cut-off events. [2021-12-06 20:19:03,152 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-06 20:19:03,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 394 events. 104/394 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1529 event pairs, 11 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 521. Up to 48 conditions per place. [2021-12-06 20:19:03,158 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 17 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2021-12-06 20:19:03,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 119 transitions, 310 flow [2021-12-06 20:19:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 20:19:03,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2021-12-06 20:19:03,159 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9121447028423773 [2021-12-06 20:19:03,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2021-12-06 20:19:03,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2021-12-06 20:19:03,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:03,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2021-12-06 20:19:03,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 20:19:03,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:03,162 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:03,162 INFO L186 Difference]: Start difference. First operand has 110 places, 113 transitions, 258 flow. Second operand 3 states and 353 transitions. [2021-12-06 20:19:03,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 119 transitions, 310 flow [2021-12-06 20:19:03,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 119 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 20:19:03,165 INFO L242 Difference]: Finished difference. Result has 112 places, 114 transitions, 268 flow [2021-12-06 20:19:03,165 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=112, PETRI_TRANSITIONS=114} [2021-12-06 20:19:03,166 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 3 predicate places. [2021-12-06 20:19:03,166 INFO L470 AbstractCegarLoop]: Abstraction has has 112 places, 114 transitions, 268 flow [2021-12-06 20:19:03,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:03,166 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:03,167 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, 1, 1, 1, 1, 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 20:19:03,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:19:03,167 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 20:19:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash 880183357, now seen corresponding path program 1 times [2021-12-06 20:19:03,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:03,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075088083] [2021-12-06 20:19:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:03,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:19:03,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:03,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075088083] [2021-12-06 20:19:03,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075088083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:03,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:03,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:19:03,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879158032] [2021-12-06 20:19:03,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:03,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:03,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:03,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:03,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:19:03,235 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-12-06 20:19:03,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 114 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 20:19:03,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:03,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-12-06 20:19:03,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:03,319 INFO L129 PetriNetUnfolder]: 151/480 cut-off events. [2021-12-06 20:19:03,319 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-12-06 20:19:03,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 480 events. 151/480 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2248 event pairs, 11 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 723. Up to 132 conditions per place. [2021-12-06 20:19:03,326 INFO L132 encePairwiseOnDemand]: 126/129 looper letters, 19 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2021-12-06 20:19:03,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 120 transitions, 324 flow [2021-12-06 20:19:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 20:19:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2021-12-06 20:19:03,328 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9018087855297158 [2021-12-06 20:19:03,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2021-12-06 20:19:03,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2021-12-06 20:19:03,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:03,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2021-12-06 20:19:03,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:03,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:03,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:03,330 INFO L186 Difference]: Start difference. First operand has 112 places, 114 transitions, 268 flow. Second operand 3 states and 349 transitions. [2021-12-06 20:19:03,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 120 transitions, 324 flow [2021-12-06 20:19:03,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 120 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 20:19:03,333 INFO L242 Difference]: Finished difference. Result has 114 places, 115 transitions, 278 flow [2021-12-06 20:19:03,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=114, PETRI_TRANSITIONS=115} [2021-12-06 20:19:03,334 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 5 predicate places. [2021-12-06 20:19:03,334 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 115 transitions, 278 flow [2021-12-06 20:19:03,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 20:19:03,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:03,335 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, 1, 1, 1, 1, 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 20:19:03,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:19:03,335 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 20:19:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1934515373, now seen corresponding path program 1 times [2021-12-06 20:19:03,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:03,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793426717] [2021-12-06 20:19:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:03,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:19:03,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:03,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793426717] [2021-12-06 20:19:03,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793426717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:03,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:03,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:19:03,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350701630] [2021-12-06 20:19:03,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:03,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:19:03,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:03,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:19:03,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:19:03,409 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-12-06 20:19:03,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 20:19:03,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:03,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-12-06 20:19:03,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:03,476 INFO L129 PetriNetUnfolder]: 59/293 cut-off events. [2021-12-06 20:19:03,476 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-12-06 20:19:03,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 293 events. 59/293 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1277 event pairs, 20 based on Foata normal form. 12/283 useless extension candidates. Maximal degree in co-relation 486. Up to 57 conditions per place. [2021-12-06 20:19:03,480 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 17 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2021-12-06 20:19:03,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 121 transitions, 341 flow [2021-12-06 20:19:03,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:19:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-06 20:19:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2021-12-06 20:19:03,482 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8934108527131783 [2021-12-06 20:19:03,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2021-12-06 20:19:03,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2021-12-06 20:19:03,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:03,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2021-12-06 20:19:03,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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 20:19:03,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 20:19:03,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 20:19:03,485 INFO L186 Difference]: Start difference. First operand has 114 places, 115 transitions, 278 flow. Second operand 4 states and 461 transitions. [2021-12-06 20:19:03,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 121 transitions, 341 flow [2021-12-06 20:19:03,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 20:19:03,488 INFO L242 Difference]: Finished difference. Result has 118 places, 116 transitions, 307 flow [2021-12-06 20:19:03,489 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=307, PETRI_PLACES=118, PETRI_TRANSITIONS=116} [2021-12-06 20:19:03,489 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 9 predicate places. [2021-12-06 20:19:03,489 INFO L470 AbstractCegarLoop]: Abstraction has has 118 places, 116 transitions, 307 flow [2021-12-06 20:19:03,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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 20:19:03,490 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:03,490 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:03,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:19:03,490 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 20:19:03,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2066757542, now seen corresponding path program 1 times [2021-12-06 20:19:03,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:03,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765250131] [2021-12-06 20:19:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:03,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 20:19:03,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:03,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765250131] [2021-12-06 20:19:03,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765250131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:03,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:03,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:19:03,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6223140] [2021-12-06 20:19:03,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:03,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:19:03,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:03,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:19:03,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:19:03,558 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-12-06 20:19:03,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 116 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 20:19:03,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:03,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-12-06 20:19:03,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:03,765 INFO L129 PetriNetUnfolder]: 391/1567 cut-off events. [2021-12-06 20:19:03,765 INFO L130 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2021-12-06 20:19:03,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 1567 events. 391/1567 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11837 event pairs, 118 based on Foata normal form. 0/1424 useless extension candidates. Maximal degree in co-relation 2433. Up to 227 conditions per place. [2021-12-06 20:19:03,793 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 18 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2021-12-06 20:19:03,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 123 transitions, 369 flow [2021-12-06 20:19:03,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:19:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-06 20:19:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 462 transitions. [2021-12-06 20:19:03,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8953488372093024 [2021-12-06 20:19:03,795 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 462 transitions. [2021-12-06 20:19:03,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 462 transitions. [2021-12-06 20:19:03,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:03,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 462 transitions. [2021-12-06 20:19:03,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.5) internal successors, (462), 4 states have internal predecessors, (462), 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 20:19:03,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 20:19:03,798 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 20:19:03,798 INFO L186 Difference]: Start difference. First operand has 118 places, 116 transitions, 307 flow. Second operand 4 states and 462 transitions. [2021-12-06 20:19:03,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 123 transitions, 369 flow [2021-12-06 20:19:03,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 364 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-06 20:19:03,802 INFO L242 Difference]: Finished difference. Result has 122 places, 117 transitions, 327 flow [2021-12-06 20:19:03,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2021-12-06 20:19:03,803 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 13 predicate places. [2021-12-06 20:19:03,803 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 327 flow [2021-12-06 20:19:03,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 20:19:03,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:03,803 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:03,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:19:03,804 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:03,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:03,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1475929136, now seen corresponding path program 1 times [2021-12-06 20:19:03,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:03,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16928357] [2021-12-06 20:19:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:03,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 20:19:03,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:03,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16928357] [2021-12-06 20:19:03,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16928357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:03,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:03,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:19:03,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957480972] [2021-12-06 20:19:03,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:03,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:19:03,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:03,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:19:03,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:19:03,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-12-06 20:19:03,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 20:19:03,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:03,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-12-06 20:19:03,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:04,044 INFO L129 PetriNetUnfolder]: 207/990 cut-off events. [2021-12-06 20:19:04,044 INFO L130 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2021-12-06 20:19:04,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 990 events. 207/990 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6848 event pairs, 87 based on Foata normal form. 48/945 useless extension candidates. Maximal degree in co-relation 1647. Up to 200 conditions per place. [2021-12-06 20:19:04,058 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 17 selfloop transitions, 5 changer transitions 0/123 dead transitions. [2021-12-06 20:19:04,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 123 transitions, 388 flow [2021-12-06 20:19:04,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:19:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-06 20:19:04,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 461 transitions. [2021-12-06 20:19:04,060 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8934108527131783 [2021-12-06 20:19:04,060 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 461 transitions. [2021-12-06 20:19:04,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 461 transitions. [2021-12-06 20:19:04,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:04,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 461 transitions. [2021-12-06 20:19:04,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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 20:19:04,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 20:19:04,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 20:19:04,064 INFO L186 Difference]: Start difference. First operand has 122 places, 117 transitions, 327 flow. Second operand 4 states and 461 transitions. [2021-12-06 20:19:04,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 123 transitions, 388 flow [2021-12-06 20:19:04,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 123 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 20:19:04,069 INFO L242 Difference]: Finished difference. Result has 126 places, 118 transitions, 357 flow [2021-12-06 20:19:04,069 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=126, PETRI_TRANSITIONS=118} [2021-12-06 20:19:04,070 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 17 predicate places. [2021-12-06 20:19:04,070 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 118 transitions, 357 flow [2021-12-06 20:19:04,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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 20:19:04,071 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:04,071 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:04,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:19:04,071 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:04,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash 183224113, now seen corresponding path program 1 times [2021-12-06 20:19:04,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:04,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596174252] [2021-12-06 20:19:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:04,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:19:04,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:04,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596174252] [2021-12-06 20:19:04,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596174252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:04,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126016579] [2021-12-06 20:19:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:04,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:04,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:04,204 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:04,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:19:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:04,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:19:04,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:19:04,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:04,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:19:04,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126016579] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:04,694 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:19:04,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2021-12-06 20:19:04,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837673054] [2021-12-06 20:19:04,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:04,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:04,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:04,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:04,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:04,696 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2021-12-06 20:19:04,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 118 transitions, 357 flow. Second operand has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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 20:19:04,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:04,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2021-12-06 20:19:04,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:05,240 INFO L129 PetriNetUnfolder]: 894/3876 cut-off events. [2021-12-06 20:19:05,240 INFO L130 PetriNetUnfolder]: For 951/951 co-relation queries the response was YES. [2021-12-06 20:19:05,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6994 conditions, 3876 events. 894/3876 cut-off events. For 951/951 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 35845 event pairs, 111 based on Foata normal form. 1/3592 useless extension candidates. Maximal degree in co-relation 6979. Up to 878 conditions per place. [2021-12-06 20:19:05,288 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 36 selfloop transitions, 12 changer transitions 4/153 dead transitions. [2021-12-06 20:19:05,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 153 transitions, 544 flow [2021-12-06 20:19:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:19:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 20:19:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 795 transitions. [2021-12-06 20:19:05,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8803986710963455 [2021-12-06 20:19:05,292 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 795 transitions. [2021-12-06 20:19:05,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 795 transitions. [2021-12-06 20:19:05,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:05,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 795 transitions. [2021-12-06 20:19:05,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.57142857142857) internal successors, (795), 7 states have internal predecessors, (795), 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 20:19:05,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 20:19:05,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 20:19:05,299 INFO L186 Difference]: Start difference. First operand has 126 places, 118 transitions, 357 flow. Second operand 7 states and 795 transitions. [2021-12-06 20:19:05,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 153 transitions, 544 flow [2021-12-06 20:19:05,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 153 transitions, 539 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-06 20:19:05,307 INFO L242 Difference]: Finished difference. Result has 136 places, 129 transitions, 434 flow [2021-12-06 20:19:05,307 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=136, PETRI_TRANSITIONS=129} [2021-12-06 20:19:05,308 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 27 predicate places. [2021-12-06 20:19:05,308 INFO L470 AbstractCegarLoop]: Abstraction has has 136 places, 129 transitions, 434 flow [2021-12-06 20:19:05,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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 20:19:05,309 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:05,309 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:05,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:19:05,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 20:19:05,511 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:05,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:05,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1507117653, now seen corresponding path program 2 times [2021-12-06 20:19:05,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:05,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415488504] [2021-12-06 20:19:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:05,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:19:05,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:05,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415488504] [2021-12-06 20:19:05,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415488504] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:05,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589746452] [2021-12-06 20:19:05,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:19:05,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:05,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:05,726 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:05,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:19:05,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:19:05,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:19:05,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:19:05,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:19:05,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:19:06,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589746452] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:06,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:19:06,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2021-12-06 20:19:06,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130132376] [2021-12-06 20:19:06,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:06,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:19:06,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:19:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:19:06,175 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2021-12-06 20:19:06,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 129 transitions, 434 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 20:19:06,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:06,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2021-12-06 20:19:06,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:06,856 INFO L129 PetriNetUnfolder]: 1065/4698 cut-off events. [2021-12-06 20:19:06,856 INFO L130 PetriNetUnfolder]: For 2113/2267 co-relation queries the response was YES. [2021-12-06 20:19:06,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9842 conditions, 4698 events. 1065/4698 cut-off events. For 2113/2267 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 45775 event pairs, 132 based on Foata normal form. 117/4475 useless extension candidates. Maximal degree in co-relation 9822. Up to 853 conditions per place. [2021-12-06 20:19:06,907 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 43 selfloop transitions, 26 changer transitions 4/174 dead transitions. [2021-12-06 20:19:06,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 174 transitions, 736 flow [2021-12-06 20:19:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:19:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-06 20:19:06,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 911 transitions. [2021-12-06 20:19:06,910 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8827519379844961 [2021-12-06 20:19:06,910 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 911 transitions. [2021-12-06 20:19:06,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 911 transitions. [2021-12-06 20:19:06,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:06,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 911 transitions. [2021-12-06 20:19:06,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.875) internal successors, (911), 8 states have internal predecessors, (911), 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 20:19:06,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 20:19:06,915 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 20:19:06,915 INFO L186 Difference]: Start difference. First operand has 136 places, 129 transitions, 434 flow. Second operand 8 states and 911 transitions. [2021-12-06 20:19:06,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 174 transitions, 736 flow [2021-12-06 20:19:06,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 174 transitions, 718 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-12-06 20:19:06,921 INFO L242 Difference]: Finished difference. Result has 143 places, 143 transitions, 577 flow [2021-12-06 20:19:06,921 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2021-12-06 20:19:06,922 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 34 predicate places. [2021-12-06 20:19:06,922 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 577 flow [2021-12-06 20:19:06,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 20:19:06,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:06,923 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:06,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:19:07,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 20:19:07,123 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:07,124 INFO L85 PathProgramCache]: Analyzing trace with hash -541813209, now seen corresponding path program 3 times [2021-12-06 20:19:07,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:07,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366771934] [2021-12-06 20:19:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:07,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:19:07,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:07,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366771934] [2021-12-06 20:19:07,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366771934] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:07,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801454857] [2021-12-06 20:19:07,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:19:07,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:07,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:07,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:07,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:19:07,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 20:19:07,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:19:07,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:19:07,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:19:07,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:19:07,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801454857] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:07,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:19:07,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2021-12-06 20:19:07,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440224254] [2021-12-06 20:19:07,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:07,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:19:07,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:19:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:19:07,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2021-12-06 20:19:07,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 577 flow. Second operand has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 20:19:07,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:07,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2021-12-06 20:19:07,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:08,473 INFO L129 PetriNetUnfolder]: 1418/6282 cut-off events. [2021-12-06 20:19:08,473 INFO L130 PetriNetUnfolder]: For 4973/5274 co-relation queries the response was YES. [2021-12-06 20:19:08,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14560 conditions, 6282 events. 1418/6282 cut-off events. For 4973/5274 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 66012 event pairs, 127 based on Foata normal form. 117/5935 useless extension candidates. Maximal degree in co-relation 14537. Up to 942 conditions per place. [2021-12-06 20:19:08,536 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 57 selfloop transitions, 28 changer transitions 4/190 dead transitions. [2021-12-06 20:19:08,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 190 transitions, 959 flow [2021-12-06 20:19:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:19:08,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-06 20:19:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 913 transitions. [2021-12-06 20:19:08,538 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8846899224806202 [2021-12-06 20:19:08,539 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 913 transitions. [2021-12-06 20:19:08,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 913 transitions. [2021-12-06 20:19:08,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:08,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 913 transitions. [2021-12-06 20:19:08,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 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 20:19:08,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 20:19:08,543 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 20:19:08,543 INFO L186 Difference]: Start difference. First operand has 143 places, 143 transitions, 577 flow. Second operand 8 states and 913 transitions. [2021-12-06 20:19:08,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 190 transitions, 959 flow [2021-12-06 20:19:08,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 190 transitions, 874 flow, removed 39 selfloop flow, removed 3 redundant places. [2021-12-06 20:19:08,571 INFO L242 Difference]: Finished difference. Result has 148 places, 159 transitions, 697 flow [2021-12-06 20:19:08,572 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=697, PETRI_PLACES=148, PETRI_TRANSITIONS=159} [2021-12-06 20:19:08,572 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 39 predicate places. [2021-12-06 20:19:08,572 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 159 transitions, 697 flow [2021-12-06 20:19:08,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.125) internal successors, (865), 8 states have internal predecessors, (865), 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 20:19:08,573 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:08,573 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:08,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:19:08,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 20:19:08,774 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:08,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:08,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1027287213, now seen corresponding path program 4 times [2021-12-06 20:19:08,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:08,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013058113] [2021-12-06 20:19:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:08,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:08,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:08,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013058113] [2021-12-06 20:19:08,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013058113] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:08,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453508050] [2021-12-06 20:19:08,890 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 20:19:08,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:08,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:08,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:08,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:19:08,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 20:19:08,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:19:08,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:19:08,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:09,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:09,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453508050] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:09,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:19:09,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2021-12-06 20:19:09,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623972589] [2021-12-06 20:19:09,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:09,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:19:09,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:19:09,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:19:09,372 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2021-12-06 20:19:09,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 159 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 20:19:09,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:09,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2021-12-06 20:19:09,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:10,305 INFO L129 PetriNetUnfolder]: 1673/7467 cut-off events. [2021-12-06 20:19:10,305 INFO L130 PetriNetUnfolder]: For 6596/7193 co-relation queries the response was YES. [2021-12-06 20:19:10,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17561 conditions, 7467 events. 1673/7467 cut-off events. For 6596/7193 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 81557 event pairs, 161 based on Foata normal form. 233/7130 useless extension candidates. Maximal degree in co-relation 17537. Up to 1169 conditions per place. [2021-12-06 20:19:10,379 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 50 selfloop transitions, 61 changer transitions 4/216 dead transitions. [2021-12-06 20:19:10,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 216 transitions, 1174 flow [2021-12-06 20:19:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 20:19:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1029 transitions. [2021-12-06 20:19:10,382 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8863049095607235 [2021-12-06 20:19:10,382 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1029 transitions. [2021-12-06 20:19:10,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1029 transitions. [2021-12-06 20:19:10,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:10,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1029 transitions. [2021-12-06 20:19:10,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.33333333333333) internal successors, (1029), 9 states have internal predecessors, (1029), 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 20:19:10,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 20:19:10,387 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 20:19:10,387 INFO L186 Difference]: Start difference. First operand has 148 places, 159 transitions, 697 flow. Second operand 9 states and 1029 transitions. [2021-12-06 20:19:10,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 216 transitions, 1174 flow [2021-12-06 20:19:10,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 216 transitions, 1142 flow, removed 16 selfloop flow, removed 2 redundant places. [2021-12-06 20:19:10,399 INFO L242 Difference]: Finished difference. Result has 155 places, 178 transitions, 962 flow [2021-12-06 20:19:10,399 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=962, PETRI_PLACES=155, PETRI_TRANSITIONS=178} [2021-12-06 20:19:10,399 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 46 predicate places. [2021-12-06 20:19:10,400 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 178 transitions, 962 flow [2021-12-06 20:19:10,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 20:19:10,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:10,400 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:10,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:19:10,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:10,601 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:10,602 INFO L85 PathProgramCache]: Analyzing trace with hash 828404773, now seen corresponding path program 5 times [2021-12-06 20:19:10,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:10,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799127721] [2021-12-06 20:19:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:10,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:10,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:10,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799127721] [2021-12-06 20:19:10,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799127721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:10,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291609115] [2021-12-06 20:19:10,713 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 20:19:10,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:10,714 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:10,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:19:10,790 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-12-06 20:19:10,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:19:10,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:19:10,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:11,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:11,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291609115] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:11,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:19:11,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2021-12-06 20:19:11,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331771670] [2021-12-06 20:19:11,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:11,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:19:11,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:19:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:19:11,277 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2021-12-06 20:19:11,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 178 transitions, 962 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 20:19:11,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:11,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2021-12-06 20:19:11,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:12,457 INFO L129 PetriNetUnfolder]: 2070/9309 cut-off events. [2021-12-06 20:19:12,457 INFO L130 PetriNetUnfolder]: For 12113/13247 co-relation queries the response was YES. [2021-12-06 20:19:12,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23530 conditions, 9309 events. 2070/9309 cut-off events. For 12113/13247 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 106746 event pairs, 157 based on Foata normal form. 234/8827 useless extension candidates. Maximal degree in co-relation 23504. Up to 1348 conditions per place. [2021-12-06 20:19:12,548 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 83 selfloop transitions, 47 changer transitions 4/235 dead transitions. [2021-12-06 20:19:12,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 235 transitions, 1525 flow [2021-12-06 20:19:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 20:19:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1029 transitions. [2021-12-06 20:19:12,551 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8863049095607235 [2021-12-06 20:19:12,551 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1029 transitions. [2021-12-06 20:19:12,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1029 transitions. [2021-12-06 20:19:12,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:12,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1029 transitions. [2021-12-06 20:19:12,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.33333333333333) internal successors, (1029), 9 states have internal predecessors, (1029), 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 20:19:12,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 20:19:12,556 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 20:19:12,556 INFO L186 Difference]: Start difference. First operand has 155 places, 178 transitions, 962 flow. Second operand 9 states and 1029 transitions. [2021-12-06 20:19:12,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 235 transitions, 1525 flow [2021-12-06 20:19:12,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 235 transitions, 1337 flow, removed 81 selfloop flow, removed 4 redundant places. [2021-12-06 20:19:12,576 INFO L242 Difference]: Finished difference. Result has 160 places, 197 transitions, 1095 flow [2021-12-06 20:19:12,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1095, PETRI_PLACES=160, PETRI_TRANSITIONS=197} [2021-12-06 20:19:12,577 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 51 predicate places. [2021-12-06 20:19:12,577 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 197 transitions, 1095 flow [2021-12-06 20:19:12,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 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 20:19:12,577 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:12,578 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:12,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 20:19:12,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:12,779 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash -157124963, now seen corresponding path program 6 times [2021-12-06 20:19:12,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:12,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96028453] [2021-12-06 20:19:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:12,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:12,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:12,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96028453] [2021-12-06 20:19:12,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96028453] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:12,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844740082] [2021-12-06 20:19:12,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 20:19:12,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:12,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:12,943 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:12,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:19:13,045 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-06 20:19:13,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:19:13,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:19:13,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:13,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:19:13,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844740082] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:13,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:19:13,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2021-12-06 20:19:13,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579696318] [2021-12-06 20:19:13,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:13,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:19:13,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:19:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:19:13,427 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 129 [2021-12-06 20:19:13,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 197 transitions, 1095 flow. Second operand has 10 states, 10 states have (on average 107.7) internal successors, (1077), 10 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:13,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:13,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 129 [2021-12-06 20:19:13,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:14,705 INFO L129 PetriNetUnfolder]: 1931/8767 cut-off events. [2021-12-06 20:19:14,706 INFO L130 PetriNetUnfolder]: For 11811/13032 co-relation queries the response was YES. [2021-12-06 20:19:14,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22085 conditions, 8767 events. 1931/8767 cut-off events. For 11811/13032 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 100217 event pairs, 76 based on Foata normal form. 663/8800 useless extension candidates. Maximal degree in co-relation 22059. Up to 776 conditions per place. [2021-12-06 20:19:14,787 INFO L132 encePairwiseOnDemand]: 119/129 looper letters, 44 selfloop transitions, 102 changer transitions 4/251 dead transitions. [2021-12-06 20:19:14,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 251 transitions, 1624 flow [2021-12-06 20:19:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 20:19:14,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-06 20:19:14,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1132 transitions. [2021-12-06 20:19:14,790 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8775193798449612 [2021-12-06 20:19:14,790 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1132 transitions. [2021-12-06 20:19:14,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1132 transitions. [2021-12-06 20:19:14,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:14,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1132 transitions. [2021-12-06 20:19:14,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.2) internal successors, (1132), 10 states have internal predecessors, (1132), 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 20:19:14,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 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 20:19:14,795 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 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 20:19:14,795 INFO L186 Difference]: Start difference. First operand has 160 places, 197 transitions, 1095 flow. Second operand 10 states and 1132 transitions. [2021-12-06 20:19:14,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 251 transitions, 1624 flow [2021-12-06 20:19:14,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 251 transitions, 1596 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-12-06 20:19:14,807 INFO L242 Difference]: Finished difference. Result has 168 places, 213 transitions, 1428 flow [2021-12-06 20:19:14,808 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1428, PETRI_PLACES=168, PETRI_TRANSITIONS=213} [2021-12-06 20:19:14,808 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 59 predicate places. [2021-12-06 20:19:14,808 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 213 transitions, 1428 flow [2021-12-06 20:19:14,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.7) internal successors, (1077), 10 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:19:14,808 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:14,809 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:14,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:19:15,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 20:19:15,010 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash -317975230, now seen corresponding path program 7 times [2021-12-06 20:19:15,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:15,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943591348] [2021-12-06 20:19:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:15,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 20:19:15,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:15,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943591348] [2021-12-06 20:19:15,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943591348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:15,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:15,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:19:15,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198106338] [2021-12-06 20:19:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:15,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:15,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:15,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:15,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:19:15,071 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2021-12-06 20:19:15,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 213 transitions, 1428 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 20:19:15,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:15,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2021-12-06 20:19:15,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:15,834 INFO L129 PetriNetUnfolder]: 1389/6628 cut-off events. [2021-12-06 20:19:15,834 INFO L130 PetriNetUnfolder]: For 11477/12864 co-relation queries the response was YES. [2021-12-06 20:19:15,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17866 conditions, 6628 events. 1389/6628 cut-off events. For 11477/12864 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 71845 event pairs, 70 based on Foata normal form. 236/6382 useless extension candidates. Maximal degree in co-relation 17838. Up to 727 conditions per place. [2021-12-06 20:19:15,907 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 38 selfloop transitions, 4 changer transitions 0/216 dead transitions. [2021-12-06 20:19:15,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 216 transitions, 1520 flow [2021-12-06 20:19:15,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 20:19:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2021-12-06 20:19:15,909 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9043927648578811 [2021-12-06 20:19:15,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2021-12-06 20:19:15,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2021-12-06 20:19:15,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:15,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2021-12-06 20:19:15,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 20:19:15,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:15,910 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:15,911 INFO L186 Difference]: Start difference. First operand has 168 places, 213 transitions, 1428 flow. Second operand 3 states and 350 transitions. [2021-12-06 20:19:15,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 216 transitions, 1520 flow [2021-12-06 20:19:15,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 216 transitions, 1455 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-12-06 20:19:15,927 INFO L242 Difference]: Finished difference. Result has 165 places, 214 transitions, 1385 flow [2021-12-06 20:19:15,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1385, PETRI_PLACES=165, PETRI_TRANSITIONS=214} [2021-12-06 20:19:15,927 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 56 predicate places. [2021-12-06 20:19:15,927 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 214 transitions, 1385 flow [2021-12-06 20:19:15,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 20:19:15,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:15,928 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:15,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:19:15,928 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash 781976271, now seen corresponding path program 8 times [2021-12-06 20:19:15,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:15,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559222331] [2021-12-06 20:19:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:15,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-06 20:19:15,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:15,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559222331] [2021-12-06 20:19:15,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559222331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:15,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:15,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:19:15,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763419896] [2021-12-06 20:19:15,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:15,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:15,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:15,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:15,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:19:15,955 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2021-12-06 20:19:15,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 214 transitions, 1385 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 20:19:15,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:15,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2021-12-06 20:19:15,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:17,341 INFO L129 PetriNetUnfolder]: 3070/11638 cut-off events. [2021-12-06 20:19:17,341 INFO L130 PetriNetUnfolder]: For 22731/23630 co-relation queries the response was YES. [2021-12-06 20:19:17,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33305 conditions, 11638 events. 3070/11638 cut-off events. For 22731/23630 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 137865 event pairs, 359 based on Foata normal form. 307/10861 useless extension candidates. Maximal degree in co-relation 33280. Up to 1841 conditions per place. [2021-12-06 20:19:17,484 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 60 selfloop transitions, 4 changer transitions 0/239 dead transitions. [2021-12-06 20:19:17,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 239 transitions, 1760 flow [2021-12-06 20:19:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 20:19:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2021-12-06 20:19:17,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2021-12-06 20:19:17,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2021-12-06 20:19:17,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2021-12-06 20:19:17,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:17,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2021-12-06 20:19:17,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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 20:19:17,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:17,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:17,489 INFO L186 Difference]: Start difference. First operand has 165 places, 214 transitions, 1385 flow. Second operand 3 states and 352 transitions. [2021-12-06 20:19:17,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 239 transitions, 1760 flow [2021-12-06 20:19:17,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 239 transitions, 1750 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-06 20:19:17,514 INFO L242 Difference]: Finished difference. Result has 167 places, 215 transitions, 1397 flow [2021-12-06 20:19:17,514 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1397, PETRI_PLACES=167, PETRI_TRANSITIONS=215} [2021-12-06 20:19:17,514 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 58 predicate places. [2021-12-06 20:19:17,514 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 215 transitions, 1397 flow [2021-12-06 20:19:17,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 20:19:17,514 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 20:19:17,515 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:19:17,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:19:17,515 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 20:19:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1598635536, now seen corresponding path program 9 times [2021-12-06 20:19:17,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:17,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642116006] [2021-12-06 20:19:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:17,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 20:19:17,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:17,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642116006] [2021-12-06 20:19:17,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642116006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:17,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:17,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:19:17,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938939891] [2021-12-06 20:19:17,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:17,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:19:17,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:17,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:19:17,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:19:17,555 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 129 [2021-12-06 20:19:17,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 215 transitions, 1397 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 20:19:17,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 20:19:17,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 129 [2021-12-06 20:19:17,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 20:19:17,944 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([334] L48-->L50: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][68], [170#(not (= ~d3~0 (* 256 (div ~d3~0 256)))), 157#(<= ~d1~0 (* 256 (div ~d1~0 256))), 131#(= ~g1~0 1), Black: 136#(= ~d1~0 1), Black: 179#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 178#(and (<= 2 ~pos~0) (<= ~pos~0 2)), Black: 141#(= ~g2~0 1), 69#L72true, 4209#(not (= ~g2~0 (* 256 (div ~g2~0 256)))), 3536#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 67#L121-4true, 126#true, Black: 156#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), Black: 164#(and (<= ~d2~0 (* 256 (div ~d2~0 256))) (<= 0 ~d2~0)), Black: 3531#(= ~pos~0 0), 2864#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 151#(= ~d3~0 1), Black: 849#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 171#(<= ~d3~0 (* 256 (div ~d3~0 256))), Black: 4201#true, 52#L87true, 2192#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 57#L50true, 146#(= ~g3~0 1), Black: 4207#true, 846#true, 175#true, 163#(not (= (* 256 (div ~d2~0 256)) ~d2~0)), 1520#(and (<= 2 ~pos~0) (<= ~pos~0 2)), 4215#(not (= ~g3~0 (* 256 (div ~g3~0 256))))]) [2021-12-06 20:19:17,944 INFO L384 tUnfolder$Statistics]: this new event has 81 ancestors and is cut-off event [2021-12-06 20:19:17,944 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2021-12-06 20:19:17,944 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2021-12-06 20:19:17,944 INFO L387 tUnfolder$Statistics]: existing Event has 69 ancestors and is cut-off event [2021-12-06 20:19:18,127 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([334] L48-->L50: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][90], [170#(not (= ~d3~0 (* 256 (div ~d3~0 256)))), 3531#(= ~pos~0 0), 164#(and (<= ~d2~0 (* 256 (div ~d2~0 256))) (<= 0 ~d2~0)), 157#(<= ~d1~0 (* 256 (div ~d1~0 256))), 131#(= ~g1~0 1), Black: 136#(= ~d1~0 1), Black: 179#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 178#(and (<= 2 ~pos~0) (<= ~pos~0 2)), Black: 141#(= ~g2~0 1), 69#L72true, 4209#(not (= ~g2~0 (* 256 (div ~g2~0 256)))), 67#L121-4true, 126#true, Black: 156#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), Black: 163#(not (= (* 256 (div ~d2~0 256)) ~d2~0)), 2860#(= ~pos~0 0), 1519#(= ~pos~0 0), 151#(= ~d3~0 1), Black: 849#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 171#(<= ~d3~0 (* 256 (div ~d3~0 256))), Black: 4201#true, 52#L87true, 146#(= ~g3~0 1), 57#L50true, Black: 4207#true, 846#true, 175#true, 2189#(= ~pos~0 0), 4215#(not (= ~g3~0 (* 256 (div ~g3~0 256))))]) [2021-12-06 20:19:18,127 INFO L384 tUnfolder$Statistics]: this new event has 86 ancestors and is cut-off event [2021-12-06 20:19:18,127 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 20:19:18,127 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 20:19:18,127 INFO L387 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2021-12-06 20:19:18,607 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L44-->L50: Formula: (= v_~pos~0_23 (+ v_~pos~0_24 1)) InVars {~pos~0=v_~pos~0_24} OutVars{thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_1|, ~pos~0=v_~pos~0_23} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post1, ~pos~0][113], [2861#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 170#(not (= ~d3~0 (* 256 (div ~d3~0 256)))), Black: 131#(= ~g1~0 1), 164#(and (<= ~d2~0 (* 256 (div ~d2~0 256))) (<= 0 ~d2~0)), 2190#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 136#(= ~d1~0 1), Black: 179#(and (<= ~pos~0 1) (<= 1 ~pos~0)), Black: 178#(and (<= 2 ~pos~0) (<= ~pos~0 2)), Black: 141#(= ~g2~0 1), 69#L72true, 4209#(not (= ~g2~0 (* 256 (div ~g2~0 256)))), 156#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), 67#L121-4true, 126#true, Black: 157#(<= ~d1~0 (* 256 (div ~d1~0 256))), Black: 3531#(= ~pos~0 0), Black: 163#(not (= (* 256 (div ~d2~0 256)) ~d2~0)), 151#(= ~d3~0 1), Black: 849#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 52#L87true, Black: 4201#true, Black: 171#(<= ~d3~0 (* 256 (div ~d3~0 256))), 57#L50true, 146#(= ~g3~0 1), Black: 4207#true, 1521#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 846#true, 3532#(and (<= ~pos~0 1) (<= 1 ~pos~0)), 175#true, 4215#(not (= ~g3~0 (* 256 (div ~g3~0 256))))]) [2021-12-06 20:19:18,607 INFO L384 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2021-12-06 20:19:18,607 INFO L387 tUnfolder$Statistics]: existing Event has 94 ancestors and is cut-off event [2021-12-06 20:19:18,607 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2021-12-06 20:19:18,607 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2021-12-06 20:19:18,845 INFO L129 PetriNetUnfolder]: 2774/10218 cut-off events. [2021-12-06 20:19:18,845 INFO L130 PetriNetUnfolder]: For 21144/21860 co-relation queries the response was YES. [2021-12-06 20:19:18,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30427 conditions, 10218 events. 2774/10218 cut-off events. For 21144/21860 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 118300 event pairs, 353 based on Foata normal form. 308/9527 useless extension candidates. Maximal degree in co-relation 30401. Up to 1828 conditions per place. [2021-12-06 20:19:18,921 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 0 selfloop transitions, 0 changer transitions 234/234 dead transitions. [2021-12-06 20:19:18,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 234 transitions, 1758 flow [2021-12-06 20:19:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:19:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 20:19:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2021-12-06 20:19:18,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9095607235142119 [2021-12-06 20:19:18,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2021-12-06 20:19:18,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2021-12-06 20:19:18,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:19:18,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2021-12-06 20:19:18,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 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 20:19:18,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:18,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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 20:19:18,925 INFO L186 Difference]: Start difference. First operand has 167 places, 215 transitions, 1397 flow. Second operand 3 states and 352 transitions. [2021-12-06 20:19:18,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 234 transitions, 1758 flow [2021-12-06 20:19:18,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 234 transitions, 1699 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-12-06 20:19:18,946 INFO L242 Difference]: Finished difference. Result has 160 places, 0 transitions, 0 flow [2021-12-06 20:19:18,946 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=160, PETRI_TRANSITIONS=0} [2021-12-06 20:19:18,947 INFO L334 CegarLoopForPetriNet]: 109 programPoint places, 51 predicate places. [2021-12-06 20:19:18,947 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 0 transitions, 0 flow [2021-12-06 20:19:18,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 20:19:18,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-06 20:19:18,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-06 20:19:18,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-06 20:19:18,949 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-06 20:19:18,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:19:18,952 INFO L732 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:18,953 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 20:19:18,953 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 20:19:18,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 08:19:18 BasicIcfg [2021-12-06 20:19:18,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 20:19:18,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 20:19:18,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 20:19:18,956 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 20:19:18,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:19:02" (3/4) ... [2021-12-06 20:19:18,958 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 20:19:18,962 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-06 20:19:18,962 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-06 20:19:18,962 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-12-06 20:19:18,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-12-06 20:19:18,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-06 20:19:18,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 20:19:18,965 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 20:19:18,986 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 20:19:18,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 20:19:18,987 INFO L158 Benchmark]: Toolchain (without parser) took 17466.90ms. Allocated memory was 100.7MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 67.8MB in the beginning and 587.5MB in the end (delta: -519.7MB). Peak memory consumption was 734.7MB. Max. memory is 16.1GB. [2021-12-06 20:19:18,987 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:19:18,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.68ms. Allocated memory is still 100.7MB. Free memory was 67.6MB in the beginning and 74.8MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 20:19:18,987 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.97ms. Allocated memory is still 100.7MB. Free memory was 74.8MB in the beginning and 73.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:19:18,987 INFO L158 Benchmark]: Boogie Preprocessor took 19.56ms. Allocated memory is still 100.7MB. Free memory was 73.1MB in the beginning and 71.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:19:18,988 INFO L158 Benchmark]: RCFGBuilder took 305.27ms. Allocated memory is still 100.7MB. Free memory was 71.9MB in the beginning and 58.4MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 20:19:18,988 INFO L158 Benchmark]: TraceAbstraction took 16890.24ms. Allocated memory was 100.7MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 58.0MB in the beginning and 589.6MB in the end (delta: -531.6MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2021-12-06 20:19:18,988 INFO L158 Benchmark]: Witness Printer took 30.45ms. Allocated memory is still 1.4GB. Free memory was 589.6MB in the beginning and 587.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:19:18,990 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 100.7MB. Free memory is still 54.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.68ms. Allocated memory is still 100.7MB. Free memory was 67.6MB in the beginning and 74.8MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.97ms. Allocated memory is still 100.7MB. Free memory was 74.8MB in the beginning and 73.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.56ms. Allocated memory is still 100.7MB. Free memory was 73.1MB in the beginning and 71.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 305.27ms. Allocated memory is still 100.7MB. Free memory was 71.9MB in the beginning and 58.4MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16890.24ms. Allocated memory was 100.7MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 58.0MB in the beginning and 589.6MB in the end (delta: -531.6MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 30.45ms. Allocated memory is still 1.4GB. Free memory was 589.6MB in the beginning and 587.5MB in the end (delta: 2.1MB). 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: 127]: 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, 156 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: 16.8s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 267 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 267 mSDsluCounter, 485 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1153 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2157 IncrementalHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 123 mSDtfsCounter, 2157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1426 GetRequests, 1311 SyntacticMatches, 50 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1428occurred in iteration=15, InterpolantAutomatonStates: 89, 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: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 2447 NumberOfCodeBlocks, 2412 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 3077 ConstructedInterpolants, 0 QuantifiedInterpolants, 9832 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1449 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 30 InterpolantComputations, 12 PerfectInterpolantSequences, 136/439 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 20:19:19,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_479715fe-73e1-4cca-8108-da12caaecf55/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE