./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R --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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:32:49,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:32:49,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:32:49,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:32:49,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:32:49,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:32:49,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:32:49,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:32:49,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:32:49,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:32:49,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:32:49,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:32:49,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:32:49,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:32:49,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:32:49,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:32:49,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:32:49,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:32:49,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:32:49,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:32:49,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:32:49,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:32:49,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:32:49,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:32:49,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:32:49,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:32:49,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:32:49,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:32:49,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:32:49,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:32:49,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:32:49,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:32:49,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:32:49,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:32:49,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:32:49,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:32:49,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:32:49,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:32:49,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:32:49,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:32:49,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:32:49,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:32:49,876 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:32:49,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:32:49,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:32:49,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:32:49,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:32:49,879 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:32:49,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:32:49,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:32:49,880 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:32:49,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:32:49,881 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:32:49,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:32:49,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:32:49,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:32:49,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:32:49,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:32:49,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:32:49,883 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:32:49,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:32:49,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:32:49,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:32:49,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:32:49,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:32:49,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:32:49,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:32:49,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:32:49,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:32:49,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:32:49,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:32:49,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:32:49,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:32:49,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:32:49,887 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:32:49,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:32:49,887 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-11-25 18:32:50,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:32:50,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:32:50,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:32:50,233 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:32:50,234 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:32:50,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-25 18:32:53,280 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:32:53,469 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:32:53,470 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-25 18:32:53,478 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/data/bc8bf9f26/e7be4972a66d4db5b16285a450bc6e5c/FLAG9c54a6547 [2022-11-25 18:32:53,493 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/data/bc8bf9f26/e7be4972a66d4db5b16285a450bc6e5c [2022-11-25 18:32:53,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:32:53,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:32:53,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:32:53,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:32:53,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:32:53,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:53,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb4e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53, skipping insertion in model container [2022-11-25 18:32:53,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:53,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:32:53,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:32:53,772 WARN L237 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_315c99c5-097d-45f2-8a1f-e457d3d2a381/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-25 18:32:53,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:32:53,792 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:32:53,835 WARN L237 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_315c99c5-097d-45f2-8a1f-e457d3d2a381/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-25 18:32:53,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:32:53,855 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:32:53,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53 WrapperNode [2022-11-25 18:32:53,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:32:53,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:32:53,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:32:53,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:32:53,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:53,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:53,927 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-11-25 18:32:53,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:32:53,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:32:53,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:32:53,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:32:53,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:53,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:53,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:53,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:53,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:54,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:54,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:54,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:54,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:32:54,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:32:54,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:32:54,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:32:54,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (1/1) ... [2022-11-25 18:32:54,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:32:54,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:32:54,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:32:54,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:32:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:32:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:32:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:32:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:32:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:32:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:32:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:32:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:32:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:32:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:32:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:32:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:32:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:32:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:32:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:32:54,136 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:32:54,346 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:32:54,364 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:32:55,358 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:32:55,372 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:32:55,372 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 18:32:55,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:55 BoogieIcfgContainer [2022-11-25 18:32:55,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:32:55,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:32:55,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:32:55,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:32:55,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:32:53" (1/3) ... [2022-11-25 18:32:55,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523e741d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:55, skipping insertion in model container [2022-11-25 18:32:55,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:53" (2/3) ... [2022-11-25 18:32:55,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523e741d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:55, skipping insertion in model container [2022-11-25 18:32:55,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:55" (3/3) ... [2022-11-25 18:32:55,384 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-11-25 18:32:55,393 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:32:55,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:32:55,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:32:55,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:32:55,572 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:32:55,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 761 transitions, 1546 flow [2022-11-25 18:32:56,040 INFO L130 PetriNetUnfolder]: 73/758 cut-off events. [2022-11-25 18:32:56,041 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:32:56,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 758 events. 73/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2695 event pairs, 0 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-25 18:32:56,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 761 transitions, 1546 flow [2022-11-25 18:32:56,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 684 places, 747 transitions, 1512 flow [2022-11-25 18:32:56,094 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:32:56,119 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 684 places, 747 transitions, 1512 flow [2022-11-25 18:32:56,124 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 684 places, 747 transitions, 1512 flow [2022-11-25 18:32:56,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 684 places, 747 transitions, 1512 flow [2022-11-25 18:32:56,409 INFO L130 PetriNetUnfolder]: 73/747 cut-off events. [2022-11-25 18:32:56,409 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:32:56,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 747 events. 73/747 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2688 event pairs, 0 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-25 18:32:56,491 INFO L119 LiptonReduction]: Number of co-enabled transitions 187758 [2022-11-25 18:33:34,143 INFO L134 LiptonReduction]: Checked pairs total: 175151 [2022-11-25 18:33:34,144 INFO L136 LiptonReduction]: Total number of compositions: 938 [2022-11-25 18:33:34,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:33:34,165 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a698f4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:33:34,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 18:33:34,177 INFO L130 PetriNetUnfolder]: 14/49 cut-off events. [2022-11-25 18:33:34,178 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:33:34,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:34,179 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:34,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:33:34,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:34,184 INFO L85 PathProgramCache]: Analyzing trace with hash 334132079, now seen corresponding path program 1 times [2022-11-25 18:33:34,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:34,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577811592] [2022-11-25 18:33:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:34,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:33:34,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:34,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577811592] [2022-11-25 18:33:34,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577811592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:34,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:34,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:33:34,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537830712] [2022-11-25 18:33:34,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:34,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:33:34,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:33:34,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:33:34,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 705 out of 1699 [2022-11-25 18:33:34,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 711.3333333333334) internal successors, (2134), 3 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:34,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:34,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 705 of 1699 [2022-11-25 18:33:34,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:35,809 INFO L130 PetriNetUnfolder]: 2776/3671 cut-off events. [2022-11-25 18:33:35,810 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2022-11-25 18:33:35,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 3671 events. 2776/3671 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12610 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 7072. Up to 3669 conditions per place. [2022-11-25 18:33:35,830 INFO L137 encePairwiseOnDemand]: 1691/1699 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-11-25 18:33:35,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 226 flow [2022-11-25 18:33:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:33:35,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:33:35,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2171 transitions. [2022-11-25 18:33:35,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4259368255836767 [2022-11-25 18:33:35,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2171 transitions. [2022-11-25 18:33:35,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2171 transitions. [2022-11-25 18:33:35,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:35,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2171 transitions. [2022-11-25 18:33:35,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 723.6666666666666) internal successors, (2171), 3 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:35,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:35,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:35,889 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 118 flow. Second operand 3 states and 2171 transitions. [2022-11-25 18:33:35,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 226 flow [2022-11-25 18:33:35,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 18:33:35,898 INFO L231 Difference]: Finished difference. Result has 43 places, 52 transitions, 136 flow [2022-11-25 18:33:35,900 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=52} [2022-11-25 18:33:35,903 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2022-11-25 18:33:35,903 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 52 transitions, 136 flow [2022-11-25 18:33:35,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 711.3333333333334) internal successors, (2134), 3 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:35,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:35,905 INFO L209 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] [2022-11-25 18:33:35,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:33:35,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:33:35,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash 399710625, now seen corresponding path program 1 times [2022-11-25 18:33:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:35,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289852558] [2022-11-25 18:33:35,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:33:36,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:36,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289852558] [2022-11-25 18:33:36,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289852558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:33:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514397316] [2022-11-25 18:33:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:36,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:36,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:33:36,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:33:36,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:33:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:36,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:33:36,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:33:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:33:36,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:33:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:33:36,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514397316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:33:36,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:33:36,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-11-25 18:33:36,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760237474] [2022-11-25 18:33:36,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:33:36,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:33:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:33:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:33:36,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 699 out of 1699 [2022-11-25 18:33:36,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 52 transitions, 136 flow. Second operand has 8 states, 8 states have (on average 702.75) internal successors, (5622), 8 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:36,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:36,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 699 of 1699 [2022-11-25 18:33:36,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:37,528 INFO L130 PetriNetUnfolder]: 2776/3680 cut-off events. [2022-11-25 18:33:37,529 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 18:33:37,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 3680 events. 2776/3680 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12619 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7448. Up to 3669 conditions per place. [2022-11-25 18:33:37,547 INFO L137 encePairwiseOnDemand]: 1692/1699 looper letters, 46 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2022-11-25 18:33:37,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 294 flow [2022-11-25 18:33:37,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:33:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:33:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4264 transitions. [2022-11-25 18:33:37,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4182852658426525 [2022-11-25 18:33:37,559 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4264 transitions. [2022-11-25 18:33:37,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4264 transitions. [2022-11-25 18:33:37,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:37,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4264 transitions. [2022-11-25 18:33:37,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:37,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1699.0) internal successors, (11893), 7 states have internal predecessors, (11893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:37,595 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1699.0) internal successors, (11893), 7 states have internal predecessors, (11893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:37,595 INFO L175 Difference]: Start difference. First operand has 43 places, 52 transitions, 136 flow. Second operand 6 states and 4264 transitions. [2022-11-25 18:33:37,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 294 flow [2022-11-25 18:33:37,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:33:37,597 INFO L231 Difference]: Finished difference. Result has 50 places, 61 transitions, 226 flow [2022-11-25 18:33:37,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=50, PETRI_TRANSITIONS=61} [2022-11-25 18:33:37,599 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2022-11-25 18:33:37,599 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 61 transitions, 226 flow [2022-11-25 18:33:37,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 702.75) internal successors, (5622), 8 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:37,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:37,602 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:37,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:33:37,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 18:33:37,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:33:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:37,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1943664715, now seen corresponding path program 2 times [2022-11-25 18:33:37,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:37,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528818629] [2022-11-25 18:33:37,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:37,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:33:38,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:38,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528818629] [2022-11-25 18:33:38,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528818629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:33:38,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998578560] [2022-11-25 18:33:38,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:33:38,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:38,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:33:38,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:33:38,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:33:38,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:33:38,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:33:38,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:33:38,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:33:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:33:39,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:33:39,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998578560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:39,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:33:39,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-25 18:33:39,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976267581] [2022-11-25 18:33:39,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:39,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:33:39,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:39,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:33:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:33:40,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 683 out of 1699 [2022-11-25 18:33:40,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 61 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:40,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:40,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 683 of 1699 [2022-11-25 18:33:40,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:42,146 INFO L130 PetriNetUnfolder]: 3116/4199 cut-off events. [2022-11-25 18:33:42,146 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-25 18:33:42,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 4199 events. 3116/4199 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16024 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8489. Up to 3599 conditions per place. [2022-11-25 18:33:42,171 INFO L137 encePairwiseOnDemand]: 1695/1699 looper letters, 99 selfloop transitions, 2 changer transitions 7/108 dead transitions. [2022-11-25 18:33:42,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 108 transitions, 548 flow [2022-11-25 18:33:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:33:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:33:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3512 transitions. [2022-11-25 18:33:42,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41341965862271923 [2022-11-25 18:33:42,183 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3512 transitions. [2022-11-25 18:33:42,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3512 transitions. [2022-11-25 18:33:42,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:42,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3512 transitions. [2022-11-25 18:33:42,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 702.4) internal successors, (3512), 5 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:42,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:42,211 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:42,211 INFO L175 Difference]: Start difference. First operand has 50 places, 61 transitions, 226 flow. Second operand 5 states and 3512 transitions. [2022-11-25 18:33:42,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 108 transitions, 548 flow [2022-11-25 18:33:42,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 108 transitions, 524 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-25 18:33:42,220 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 217 flow [2022-11-25 18:33:42,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2022-11-25 18:33:42,222 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2022-11-25 18:33:42,222 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 217 flow [2022-11-25 18:33:42,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:42,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:42,240 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:42,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:33:42,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:42,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:33:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1212285125, now seen corresponding path program 3 times [2022-11-25 18:33:42,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:42,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541533146] [2022-11-25 18:33:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:42,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:33:42,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:42,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541533146] [2022-11-25 18:33:42,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541533146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:33:42,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523759827] [2022-11-25 18:33:42,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:33:42,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:42,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:33:42,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:33:42,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:33:42,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 18:33:42,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:33:42,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:33:42,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:33:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:33:44,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:33:44,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523759827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:44,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:33:44,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-25 18:33:44,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640220813] [2022-11-25 18:33:44,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:44,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:33:44,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:44,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:33:44,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:33:44,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 683 out of 1699 [2022-11-25 18:33:44,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:44,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:44,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 683 of 1699 [2022-11-25 18:33:44,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:46,301 INFO L130 PetriNetUnfolder]: 3316/4549 cut-off events. [2022-11-25 18:33:46,301 INFO L131 PetriNetUnfolder]: For 711/711 co-relation queries the response was YES. [2022-11-25 18:33:46,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9787 conditions, 4549 events. 3316/4549 cut-off events. For 711/711 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18284 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9755. Up to 4051 conditions per place. [2022-11-25 18:33:46,324 INFO L137 encePairwiseOnDemand]: 1695/1699 looper letters, 104 selfloop transitions, 3 changer transitions 7/114 dead transitions. [2022-11-25 18:33:46,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 114 transitions, 571 flow [2022-11-25 18:33:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:33:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:33:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3517 transitions. [2022-11-25 18:33:46,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4140082401412596 [2022-11-25 18:33:46,333 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3517 transitions. [2022-11-25 18:33:46,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3517 transitions. [2022-11-25 18:33:46,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:46,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3517 transitions. [2022-11-25 18:33:46,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 703.4) internal successors, (3517), 5 states have internal predecessors, (3517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:46,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:46,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:46,357 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 217 flow. Second operand 5 states and 3517 transitions. [2022-11-25 18:33:46,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 114 transitions, 571 flow [2022-11-25 18:33:46,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 114 transitions, 562 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-25 18:33:46,361 INFO L231 Difference]: Finished difference. Result has 60 places, 63 transitions, 234 flow [2022-11-25 18:33:46,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=60, PETRI_TRANSITIONS=63} [2022-11-25 18:33:46,362 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2022-11-25 18:33:46,362 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 234 flow [2022-11-25 18:33:46,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 687.4) internal successors, (3437), 5 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:46,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:46,363 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:46,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:33:46,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:46,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:33:46,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash 790056833, now seen corresponding path program 4 times [2022-11-25 18:33:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:46,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525829399] [2022-11-25 18:33:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:46,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:33:46,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:46,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525829399] [2022-11-25 18:33:46,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525829399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:33:46,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717371668] [2022-11-25 18:33:46,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:33:46,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:46,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:33:46,835 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:33:46,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:33:47,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:33:47,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:33:47,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:33:47,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:33:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:33:47,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:33:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:33:47,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717371668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:33:47,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:33:47,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2022-11-25 18:33:47,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097941822] [2022-11-25 18:33:47,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:33:47,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 18:33:47,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:47,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 18:33:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-25 18:33:47,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 699 out of 1699 [2022-11-25 18:33:47,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 234 flow. Second operand has 17 states, 17 states have (on average 701.2941176470588) internal successors, (11922), 17 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:47,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:47,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 699 of 1699 [2022-11-25 18:33:47,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:48,788 INFO L130 PetriNetUnfolder]: 3315/4544 cut-off events. [2022-11-25 18:33:48,789 INFO L131 PetriNetUnfolder]: For 1854/1854 co-relation queries the response was YES. [2022-11-25 18:33:48,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10297 conditions, 4544 events. 3315/4544 cut-off events. For 1854/1854 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 17982 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 10263. Up to 4530 conditions per place. [2022-11-25 18:33:48,808 INFO L137 encePairwiseOnDemand]: 1692/1699 looper letters, 48 selfloop transitions, 18 changer transitions 0/66 dead transitions. [2022-11-25 18:33:48,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 66 transitions, 384 flow [2022-11-25 18:33:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:33:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:33:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4960 transitions. [2022-11-25 18:33:48,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4170520474228538 [2022-11-25 18:33:48,822 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4960 transitions. [2022-11-25 18:33:48,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4960 transitions. [2022-11-25 18:33:48,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:48,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4960 transitions. [2022-11-25 18:33:48,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 708.5714285714286) internal successors, (4960), 7 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:48,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1699.0) internal successors, (13592), 8 states have internal predecessors, (13592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:48,856 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1699.0) internal successors, (13592), 8 states have internal predecessors, (13592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:48,856 INFO L175 Difference]: Start difference. First operand has 60 places, 63 transitions, 234 flow. Second operand 7 states and 4960 transitions. [2022-11-25 18:33:48,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 66 transitions, 384 flow [2022-11-25 18:33:48,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 378 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 18:33:48,860 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 296 flow [2022-11-25 18:33:48,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=296, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2022-11-25 18:33:48,861 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2022-11-25 18:33:48,861 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 296 flow [2022-11-25 18:33:48,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 701.2941176470588) internal successors, (11922), 17 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:48,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:48,865 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:48,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 18:33:49,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:33:49,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:33:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash -863830801, now seen corresponding path program 5 times [2022-11-25 18:33:49,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:49,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663712043] [2022-11-25 18:33:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:33:50,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:50,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663712043] [2022-11-25 18:33:50,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663712043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:50,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:50,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:33:50,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76337482] [2022-11-25 18:33:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:50,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:33:50,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:33:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:33:50,701 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 1699 [2022-11-25 18:33:50,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:50,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:50,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 1699 [2022-11-25 18:33:50,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:52,039 INFO L130 PetriNetUnfolder]: 4015/5649 cut-off events. [2022-11-25 18:33:52,039 INFO L131 PetriNetUnfolder]: For 1203/1203 co-relation queries the response was YES. [2022-11-25 18:33:52,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12369 conditions, 5649 events. 4015/5649 cut-off events. For 1203/1203 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 25520 event pairs, 2135 based on Foata normal form. 1/4558 useless extension candidates. Maximal degree in co-relation 12256. Up to 4204 conditions per place. [2022-11-25 18:33:52,062 INFO L137 encePairwiseOnDemand]: 1687/1699 looper letters, 127 selfloop transitions, 14 changer transitions 4/145 dead transitions. [2022-11-25 18:33:52,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 145 transitions, 775 flow [2022-11-25 18:33:52,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:33:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:33:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3523 transitions. [2022-11-25 18:33:52,072 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41471453796350793 [2022-11-25 18:33:52,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3523 transitions. [2022-11-25 18:33:52,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3523 transitions. [2022-11-25 18:33:52,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:52,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3523 transitions. [2022-11-25 18:33:52,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 704.6) internal successors, (3523), 5 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:52,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:52,143 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:52,144 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 296 flow. Second operand 5 states and 3523 transitions. [2022-11-25 18:33:52,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 145 transitions, 775 flow [2022-11-25 18:33:52,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 145 transitions, 739 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-25 18:33:52,154 INFO L231 Difference]: Finished difference. Result has 67 places, 78 transitions, 376 flow [2022-11-25 18:33:52,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=376, PETRI_PLACES=67, PETRI_TRANSITIONS=78} [2022-11-25 18:33:52,157 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2022-11-25 18:33:52,157 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 78 transitions, 376 flow [2022-11-25 18:33:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:52,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:52,158 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:52,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:33:52,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:33:52,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:52,159 INFO L85 PathProgramCache]: Analyzing trace with hash 755652597, now seen corresponding path program 6 times [2022-11-25 18:33:52,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:52,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100845303] [2022-11-25 18:33:52,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:52,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:33:53,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:53,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100845303] [2022-11-25 18:33:53,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100845303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:53,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:53,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:33:53,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44428261] [2022-11-25 18:33:53,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:53,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:33:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:33:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:33:53,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 1699 [2022-11-25 18:33:53,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 78 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:53,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:53,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 1699 [2022-11-25 18:33:53,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:55,694 INFO L130 PetriNetUnfolder]: 7430/10294 cut-off events. [2022-11-25 18:33:55,694 INFO L131 PetriNetUnfolder]: For 6866/6866 co-relation queries the response was YES. [2022-11-25 18:33:55,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25642 conditions, 10294 events. 7430/10294 cut-off events. For 6866/6866 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 50243 event pairs, 1983 based on Foata normal form. 1/8863 useless extension candidates. Maximal degree in co-relation 25543. Up to 4992 conditions per place. [2022-11-25 18:33:55,746 INFO L137 encePairwiseOnDemand]: 1684/1699 looper letters, 134 selfloop transitions, 43 changer transitions 3/180 dead transitions. [2022-11-25 18:33:55,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 180 transitions, 1070 flow [2022-11-25 18:33:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:33:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:33:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3545 transitions. [2022-11-25 18:33:55,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41730429664508534 [2022-11-25 18:33:55,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3545 transitions. [2022-11-25 18:33:55,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3545 transitions. [2022-11-25 18:33:55,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:55,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3545 transitions. [2022-11-25 18:33:55,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 709.0) internal successors, (3545), 5 states have internal predecessors, (3545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:55,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:55,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:55,782 INFO L175 Difference]: Start difference. First operand has 67 places, 78 transitions, 376 flow. Second operand 5 states and 3545 transitions. [2022-11-25 18:33:55,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 180 transitions, 1070 flow [2022-11-25 18:33:55,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 180 transitions, 1059 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 18:33:55,808 INFO L231 Difference]: Finished difference. Result has 73 places, 108 transitions, 715 flow [2022-11-25 18:33:55,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=715, PETRI_PLACES=73, PETRI_TRANSITIONS=108} [2022-11-25 18:33:55,811 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2022-11-25 18:33:55,811 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 108 transitions, 715 flow [2022-11-25 18:33:55,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:55,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:33:55,813 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:33:55,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:33:55,813 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:33:55,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:33:55,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1867495533, now seen corresponding path program 7 times [2022-11-25 18:33:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:33:55,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855477266] [2022-11-25 18:33:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:33:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:33:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:33:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:33:56,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:33:56,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855477266] [2022-11-25 18:33:56,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855477266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:33:56,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:33:56,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:33:56,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047416422] [2022-11-25 18:33:56,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:33:56,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:33:56,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:33:56,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:33:56,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:33:57,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 679 out of 1699 [2022-11-25 18:33:57,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 108 transitions, 715 flow. Second operand has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:57,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:33:57,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 679 of 1699 [2022-11-25 18:33:57,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:33:59,842 INFO L130 PetriNetUnfolder]: 7801/10846 cut-off events. [2022-11-25 18:33:59,842 INFO L131 PetriNetUnfolder]: For 16857/16857 co-relation queries the response was YES. [2022-11-25 18:33:59,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32642 conditions, 10846 events. 7801/10846 cut-off events. For 16857/16857 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 53821 event pairs, 3677 based on Foata normal form. 1/9273 useless extension candidates. Maximal degree in co-relation 32540. Up to 9134 conditions per place. [2022-11-25 18:33:59,916 INFO L137 encePairwiseOnDemand]: 1688/1699 looper letters, 174 selfloop transitions, 18 changer transitions 3/195 dead transitions. [2022-11-25 18:33:59,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 195 transitions, 1497 flow [2022-11-25 18:33:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:33:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:33:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3516 transitions. [2022-11-25 18:33:59,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4138905238375515 [2022-11-25 18:33:59,927 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3516 transitions. [2022-11-25 18:33:59,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3516 transitions. [2022-11-25 18:33:59,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:33:59,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3516 transitions. [2022-11-25 18:33:59,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 703.2) internal successors, (3516), 5 states have internal predecessors, (3516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:59,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:59,952 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:33:59,952 INFO L175 Difference]: Start difference. First operand has 73 places, 108 transitions, 715 flow. Second operand 5 states and 3516 transitions. [2022-11-25 18:33:59,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 195 transitions, 1497 flow [2022-11-25 18:34:00,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 195 transitions, 1479 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-25 18:34:00,003 INFO L231 Difference]: Finished difference. Result has 80 places, 123 transitions, 888 flow [2022-11-25 18:34:00,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=888, PETRI_PLACES=80, PETRI_TRANSITIONS=123} [2022-11-25 18:34:00,004 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2022-11-25 18:34:00,004 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 123 transitions, 888 flow [2022-11-25 18:34:00,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 683.4) internal successors, (3417), 5 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:00,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:34:00,006 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:00,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:34:00,006 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:34:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:00,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1406574851, now seen corresponding path program 8 times [2022-11-25 18:34:00,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:00,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62573063] [2022-11-25 18:34:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:00,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:00,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:00,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62573063] [2022-11-25 18:34:00,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62573063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:00,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:00,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:34:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157851329] [2022-11-25 18:34:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:00,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:34:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:34:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:34:01,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 678 out of 1699 [2022-11-25 18:34:01,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 123 transitions, 888 flow. Second operand has 5 states, 5 states have (on average 682.4) internal successors, (3412), 5 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:01,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:34:01,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 678 of 1699 [2022-11-25 18:34:01,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:34:03,955 INFO L130 PetriNetUnfolder]: 8260/11556 cut-off events. [2022-11-25 18:34:03,955 INFO L131 PetriNetUnfolder]: For 25223/25223 co-relation queries the response was YES. [2022-11-25 18:34:03,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39650 conditions, 11556 events. 8260/11556 cut-off events. For 25223/25223 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 58503 event pairs, 3402 based on Foata normal form. 1/9913 useless extension candidates. Maximal degree in co-relation 39544. Up to 8859 conditions per place. [2022-11-25 18:34:04,033 INFO L137 encePairwiseOnDemand]: 1687/1699 looper letters, 182 selfloop transitions, 35 changer transitions 4/221 dead transitions. [2022-11-25 18:34:04,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 221 transitions, 1814 flow [2022-11-25 18:34:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:34:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:34:04,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3528 transitions. [2022-11-25 18:34:04,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4153031194820483 [2022-11-25 18:34:04,042 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3528 transitions. [2022-11-25 18:34:04,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3528 transitions. [2022-11-25 18:34:04,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:34:04,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3528 transitions. [2022-11-25 18:34:04,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 705.6) internal successors, (3528), 5 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:04,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:04,063 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1699.0) internal successors, (10194), 6 states have internal predecessors, (10194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:04,063 INFO L175 Difference]: Start difference. First operand has 80 places, 123 transitions, 888 flow. Second operand 5 states and 3528 transitions. [2022-11-25 18:34:04,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 221 transitions, 1814 flow [2022-11-25 18:34:04,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 221 transitions, 1796 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 18:34:04,162 INFO L231 Difference]: Finished difference. Result has 86 places, 142 transitions, 1216 flow [2022-11-25 18:34:04,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1216, PETRI_PLACES=86, PETRI_TRANSITIONS=142} [2022-11-25 18:34:04,164 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2022-11-25 18:34:04,164 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 142 transitions, 1216 flow [2022-11-25 18:34:04,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 682.4) internal successors, (3412), 5 states have internal predecessors, (3412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:04,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:34:04,165 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:04,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:34:04,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:34:04,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:04,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1064253672, now seen corresponding path program 1 times [2022-11-25 18:34:04,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:04,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566078190] [2022-11-25 18:34:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:04,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:04,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566078190] [2022-11-25 18:34:04,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566078190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:04,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:04,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:34:04,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9838747] [2022-11-25 18:34:04,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:04,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:34:04,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:34:04,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:34:04,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1699 [2022-11-25 18:34:04,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 142 transitions, 1216 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:04,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:34:04,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1699 [2022-11-25 18:34:04,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:34:08,160 INFO L130 PetriNetUnfolder]: 11299/15796 cut-off events. [2022-11-25 18:34:08,160 INFO L131 PetriNetUnfolder]: For 47158/47158 co-relation queries the response was YES. [2022-11-25 18:34:08,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55606 conditions, 15796 events. 11299/15796 cut-off events. For 47158/47158 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 81813 event pairs, 4576 based on Foata normal form. 290/13674 useless extension candidates. Maximal degree in co-relation 55497. Up to 10443 conditions per place. [2022-11-25 18:34:08,290 INFO L137 encePairwiseOnDemand]: 1694/1699 looper letters, 184 selfloop transitions, 8 changer transitions 0/192 dead transitions. [2022-11-25 18:34:08,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 192 transitions, 1928 flow [2022-11-25 18:34:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:34:08,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:34:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2210 transitions. [2022-11-25 18:34:08,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4335883853247008 [2022-11-25 18:34:08,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2210 transitions. [2022-11-25 18:34:08,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2210 transitions. [2022-11-25 18:34:08,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:34:08,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2210 transitions. [2022-11-25 18:34:08,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 736.6666666666666) internal successors, (2210), 3 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:08,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:08,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:08,311 INFO L175 Difference]: Start difference. First operand has 86 places, 142 transitions, 1216 flow. Second operand 3 states and 2210 transitions. [2022-11-25 18:34:08,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 192 transitions, 1928 flow [2022-11-25 18:34:08,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 192 transitions, 1910 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-11-25 18:34:08,619 INFO L231 Difference]: Finished difference. Result has 88 places, 139 transitions, 1179 flow [2022-11-25 18:34:08,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1179, PETRI_PLACES=88, PETRI_TRANSITIONS=139} [2022-11-25 18:34:08,620 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2022-11-25 18:34:08,620 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 139 transitions, 1179 flow [2022-11-25 18:34:08,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:08,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:34:08,621 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:08,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:34:08,621 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:34:08,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:08,622 INFO L85 PathProgramCache]: Analyzing trace with hash 911826559, now seen corresponding path program 1 times [2022-11-25 18:34:08,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:08,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198481731] [2022-11-25 18:34:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:08,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:08,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:08,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198481731] [2022-11-25 18:34:08,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198481731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:08,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:08,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:34:08,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558749776] [2022-11-25 18:34:08,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:08,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:34:08,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:08,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:34:08,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:34:08,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1699 [2022-11-25 18:34:08,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 139 transitions, 1179 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:08,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:34:08,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1699 [2022-11-25 18:34:08,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:34:12,744 INFO L130 PetriNetUnfolder]: 16301/22678 cut-off events. [2022-11-25 18:34:12,744 INFO L131 PetriNetUnfolder]: For 62335/62335 co-relation queries the response was YES. [2022-11-25 18:34:12,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80976 conditions, 22678 events. 16301/22678 cut-off events. For 62335/62335 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 123940 event pairs, 6616 based on Foata normal form. 618/19708 useless extension candidates. Maximal degree in co-relation 80866. Up to 16119 conditions per place. [2022-11-25 18:34:12,915 INFO L137 encePairwiseOnDemand]: 1694/1699 looper letters, 189 selfloop transitions, 7 changer transitions 0/196 dead transitions. [2022-11-25 18:34:12,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 196 transitions, 1989 flow [2022-11-25 18:34:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:34:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:34:12,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2210 transitions. [2022-11-25 18:34:12,921 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4335883853247008 [2022-11-25 18:34:12,921 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2210 transitions. [2022-11-25 18:34:12,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2210 transitions. [2022-11-25 18:34:12,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:34:12,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2210 transitions. [2022-11-25 18:34:12,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 736.6666666666666) internal successors, (2210), 3 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:12,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:12,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:12,934 INFO L175 Difference]: Start difference. First operand has 88 places, 139 transitions, 1179 flow. Second operand 3 states and 2210 transitions. [2022-11-25 18:34:12,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 196 transitions, 1989 flow [2022-11-25 18:34:13,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 196 transitions, 1974 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:34:13,218 INFO L231 Difference]: Finished difference. Result has 90 places, 137 transitions, 1166 flow [2022-11-25 18:34:13,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1166, PETRI_PLACES=90, PETRI_TRANSITIONS=137} [2022-11-25 18:34:13,219 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 44 predicate places. [2022-11-25 18:34:13,219 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 137 transitions, 1166 flow [2022-11-25 18:34:13,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:13,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:34:13,220 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:13,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:34:13,220 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:34:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1963638922, now seen corresponding path program 1 times [2022-11-25 18:34:13,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:13,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235479658] [2022-11-25 18:34:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:13,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:13,402 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:13,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:13,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235479658] [2022-11-25 18:34:13,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235479658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:13,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:13,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:34:13,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300219834] [2022-11-25 18:34:13,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:13,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:34:13,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:13,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:34:13,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:34:13,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 710 out of 1699 [2022-11-25 18:34:13,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 137 transitions, 1166 flow. Second operand has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:13,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:34:13,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 710 of 1699 [2022-11-25 18:34:13,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:34:18,686 INFO L130 PetriNetUnfolder]: 20740/28761 cut-off events. [2022-11-25 18:34:18,687 INFO L131 PetriNetUnfolder]: For 78938/78938 co-relation queries the response was YES. [2022-11-25 18:34:18,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104891 conditions, 28761 events. 20740/28761 cut-off events. For 78938/78938 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 159195 event pairs, 9413 based on Foata normal form. 0/24823 useless extension candidates. Maximal degree in co-relation 104780. Up to 23178 conditions per place. [2022-11-25 18:34:18,898 INFO L137 encePairwiseOnDemand]: 1696/1699 looper letters, 180 selfloop transitions, 9 changer transitions 0/189 dead transitions. [2022-11-25 18:34:18,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 189 transitions, 1900 flow [2022-11-25 18:34:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:34:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:34:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2212 transitions. [2022-11-25 18:34:18,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43398077300372767 [2022-11-25 18:34:18,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2212 transitions. [2022-11-25 18:34:18,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2212 transitions. [2022-11-25 18:34:18,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:34:18,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2212 transitions. [2022-11-25 18:34:18,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 737.3333333333334) internal successors, (2212), 3 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:18,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:18,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1699.0) internal successors, (6796), 4 states have internal predecessors, (6796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:18,917 INFO L175 Difference]: Start difference. First operand has 90 places, 137 transitions, 1166 flow. Second operand 3 states and 2212 transitions. [2022-11-25 18:34:18,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 189 transitions, 1900 flow [2022-11-25 18:34:19,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 189 transitions, 1889 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:34:19,174 INFO L231 Difference]: Finished difference. Result has 92 places, 136 transitions, 1184 flow [2022-11-25 18:34:19,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1184, PETRI_PLACES=92, PETRI_TRANSITIONS=136} [2022-11-25 18:34:19,175 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2022-11-25 18:34:19,176 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 136 transitions, 1184 flow [2022-11-25 18:34:19,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 717.6666666666666) internal successors, (2153), 3 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:19,176 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:34:19,176 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:19,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:34:19,177 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:34:19,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash 831158832, now seen corresponding path program 1 times [2022-11-25 18:34:19,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:19,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018603370] [2022-11-25 18:34:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:19,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018603370] [2022-11-25 18:34:19,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018603370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:34:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6182114] [2022-11-25 18:34:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:19,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:34:19,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:34:19,729 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:34:19,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:34:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:19,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:34:19,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:34:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:20,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:34:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:20,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6182114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:34:20,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:34:20,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-25 18:34:20,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874824587] [2022-11-25 18:34:20,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:34:20,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:34:20,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:20,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:34:20,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:34:20,300 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 704 out of 1699 [2022-11-25 18:34:20,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 136 transitions, 1184 flow. Second operand has 6 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:20,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:34:20,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 704 of 1699 [2022-11-25 18:34:20,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:34:26,970 INFO L130 PetriNetUnfolder]: 21230/29519 cut-off events. [2022-11-25 18:34:26,970 INFO L131 PetriNetUnfolder]: For 89113/89113 co-relation queries the response was YES. [2022-11-25 18:34:27,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114364 conditions, 29519 events. 21230/29519 cut-off events. For 89113/89113 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 167636 event pairs, 5569 based on Foata normal form. 4/25405 useless extension candidates. Maximal degree in co-relation 114252. Up to 27071 conditions per place. [2022-11-25 18:34:27,176 INFO L137 encePairwiseOnDemand]: 1695/1699 looper letters, 166 selfloop transitions, 11 changer transitions 30/207 dead transitions. [2022-11-25 18:34:27,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 207 transitions, 2061 flow [2022-11-25 18:34:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:34:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:34:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2915 transitions. [2022-11-25 18:34:27,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42892878163625664 [2022-11-25 18:34:27,184 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2915 transitions. [2022-11-25 18:34:27,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2915 transitions. [2022-11-25 18:34:27,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:34:27,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2915 transitions. [2022-11-25 18:34:27,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 728.75) internal successors, (2915), 4 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:27,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1699.0) internal successors, (8495), 5 states have internal predecessors, (8495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:27,199 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1699.0) internal successors, (8495), 5 states have internal predecessors, (8495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:27,199 INFO L175 Difference]: Start difference. First operand has 92 places, 136 transitions, 1184 flow. Second operand 4 states and 2915 transitions. [2022-11-25 18:34:27,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 207 transitions, 2061 flow [2022-11-25 18:34:27,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 207 transitions, 2040 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 18:34:27,490 INFO L231 Difference]: Finished difference. Result has 97 places, 141 transitions, 1278 flow [2022-11-25 18:34:27,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1278, PETRI_PLACES=97, PETRI_TRANSITIONS=141} [2022-11-25 18:34:27,490 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2022-11-25 18:34:27,490 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 141 transitions, 1278 flow [2022-11-25 18:34:27,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 710.6666666666666) internal successors, (4264), 6 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:27,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:34:27,492 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:27,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:34:27,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 18:34:27,694 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:34:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:27,695 INFO L85 PathProgramCache]: Analyzing trace with hash 966089324, now seen corresponding path program 2 times [2022-11-25 18:34:27,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:27,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877334526] [2022-11-25 18:34:27,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:27,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-25 18:34:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:28,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877334526] [2022-11-25 18:34:28,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877334526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:34:28,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:34:28,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:34:28,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401450168] [2022-11-25 18:34:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:34:28,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:34:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:34:28,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:34:28,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 701 out of 1699 [2022-11-25 18:34:28,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 141 transitions, 1278 flow. Second operand has 5 states, 5 states have (on average 705.8) internal successors, (3529), 5 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:28,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:34:28,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 701 of 1699 [2022-11-25 18:34:28,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:34:34,999 INFO L130 PetriNetUnfolder]: 20309/28193 cut-off events. [2022-11-25 18:34:34,999 INFO L131 PetriNetUnfolder]: For 83282/83282 co-relation queries the response was YES. [2022-11-25 18:34:35,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106356 conditions, 28193 events. 20309/28193 cut-off events. For 83282/83282 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 155847 event pairs, 11671 based on Foata normal form. 5/24284 useless extension candidates. Maximal degree in co-relation 106288. Up to 26082 conditions per place. [2022-11-25 18:34:35,212 INFO L137 encePairwiseOnDemand]: 1696/1699 looper letters, 155 selfloop transitions, 4 changer transitions 38/197 dead transitions. [2022-11-25 18:34:35,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 197 transitions, 1947 flow [2022-11-25 18:34:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:34:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:34:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2901 transitions. [2022-11-25 18:34:35,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4268687463213655 [2022-11-25 18:34:35,220 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2901 transitions. [2022-11-25 18:34:35,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2901 transitions. [2022-11-25 18:34:35,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:34:35,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2901 transitions. [2022-11-25 18:34:35,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 725.25) internal successors, (2901), 4 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:35,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1699.0) internal successors, (8495), 5 states have internal predecessors, (8495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:35,235 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1699.0) internal successors, (8495), 5 states have internal predecessors, (8495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:35,235 INFO L175 Difference]: Start difference. First operand has 97 places, 141 transitions, 1278 flow. Second operand 4 states and 2901 transitions. [2022-11-25 18:34:35,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 197 transitions, 1947 flow [2022-11-25 18:34:35,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 197 transitions, 1932 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 18:34:35,480 INFO L231 Difference]: Finished difference. Result has 98 places, 130 transitions, 1145 flow [2022-11-25 18:34:35,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1699, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1145, PETRI_PLACES=98, PETRI_TRANSITIONS=130} [2022-11-25 18:34:35,481 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2022-11-25 18:34:35,481 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 130 transitions, 1145 flow [2022-11-25 18:34:35,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 705.8) internal successors, (3529), 5 states have internal predecessors, (3529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:35,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:34:35,482 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:34:35,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:34:35,483 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-25 18:34:35,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:34:35,483 INFO L85 PathProgramCache]: Analyzing trace with hash -555252700, now seen corresponding path program 1 times [2022-11-25 18:34:35,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:34:35,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107674347] [2022-11-25 18:34:35,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:35,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:34:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:37,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:34:37,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107674347] [2022-11-25 18:34:37,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107674347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:34:37,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367268598] [2022-11-25 18:34:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:34:37,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:34:37,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:34:37,167 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:34:37,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_315c99c5-097d-45f2-8a1f-e457d3d2a381/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:34:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:34:37,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:34:37,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:34:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:37,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:34:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:34:37,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367268598] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:34:37,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:34:37,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3, 3] total 14 [2022-11-25 18:34:37,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473205275] [2022-11-25 18:34:37,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:34:37,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 18:34:37,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:34:37,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 18:34:37,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-25 18:34:39,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 661 out of 1699 [2022-11-25 18:34:39,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 130 transitions, 1145 flow. Second operand has 15 states, 15 states have (on average 665.7333333333333) internal successors, (9986), 15 states have internal predecessors, (9986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:34:39,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:34:39,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 661 of 1699 [2022-11-25 18:34:39,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand