./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro --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 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b --- 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-8393723 [2022-11-18 18:40:42,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:40:42,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:40:42,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:40:42,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:40:42,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:40:42,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:40:42,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:40:42,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:40:42,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:40:42,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:40:42,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:40:42,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:40:42,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:40:42,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:40:42,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:40:42,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:40:42,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:40:42,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:40:42,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:40:42,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:40:42,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:40:42,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:40:42,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:40:42,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:40:42,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:40:42,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:40:42,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:40:42,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:40:42,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:40:42,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:40:42,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:40:42,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:40:42,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:40:42,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:40:42,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:40:42,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:40:42,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:40:42,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:40:42,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:40:42,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:40:42,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:40:42,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:40:42,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:40:42,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:40:42,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:40:42,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:40:42,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:40:42,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:40:42,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:40:42,970 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:40:42,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:40:42,971 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:40:42,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:40:42,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:40:42,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:40:42,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:40:42,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:40:42,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:40:42,973 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:40:42,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:40:42,974 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:40:42,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:40:42,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:40:42,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:40:42,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:40:42,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:40:42,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:40:42,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:40:42,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:40:42,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:40:42,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:40:42,978 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:40:42,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:40:42,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:40:42,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 841ea5a5ca051cc33dfe29d877ccdea4b63526a0ee61a2de18869a9ba1858c4b [2022-11-18 18:40:43,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:40:43,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:40:43,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:40:43,315 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:40:43,316 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:40:43,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-18 18:40:43,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/data/059c8a70a/c6111e2713cc43d380c69581f820acf7/FLAG79db49f4b [2022-11-18 18:40:43,870 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:40:43,871 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2022-11-18 18:40:43,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/data/059c8a70a/c6111e2713cc43d380c69581f820acf7/FLAG79db49f4b [2022-11-18 18:40:44,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/data/059c8a70a/c6111e2713cc43d380c69581f820acf7 [2022-11-18 18:40:44,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:40:44,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:40:44,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:40:44,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:40:44,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:40:44,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cbfb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44, skipping insertion in model container [2022-11-18 18:40:44,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:40:44,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:40:44,546 WARN L234 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_fe233830-8be8-423b-a175-a78bceb4d852/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-18 18:40:44,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:40:44,565 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:40:44,597 WARN L234 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_fe233830-8be8-423b-a175-a78bceb4d852/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c[4007,4020] [2022-11-18 18:40:44,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:40:44,618 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:40:44,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44 WrapperNode [2022-11-18 18:40:44,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:40:44,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:40:44,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:40:44,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:40:44,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,679 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 267 [2022-11-18 18:40:44,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:40:44,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:40:44,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:40:44,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:40:44,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,732 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:40:44,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:40:44,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:40:44,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:40:44,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (1/1) ... [2022-11-18 18:40:44,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:40:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:44,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:40:44,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:40:44,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:40:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:40:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:40:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:40:44,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:40:44,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:40:44,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:40:44,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:40:44,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:40:44,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:40:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 18:40:44,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 18:40:44,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:40:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:40:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:40:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:40:44,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:40:44,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:40:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:40:44,846 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:40:45,014 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:40:45,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:40:45,512 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:40:45,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:40:45,696 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 18:40:45,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:45 BoogieIcfgContainer [2022-11-18 18:40:45,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:40:45,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:40:45,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:40:45,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:40:45,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:40:44" (1/3) ... [2022-11-18 18:40:45,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e77fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:40:45, skipping insertion in model container [2022-11-18 18:40:45,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:40:44" (2/3) ... [2022-11-18 18:40:45,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e77fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:40:45, skipping insertion in model container [2022-11-18 18:40:45,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:40:45" (3/3) ... [2022-11-18 18:40:45,714 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-11-18 18:40:45,726 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:40:45,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:40:45,736 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:40:45,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:40:45,912 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 18:40:45,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 239 transitions, 510 flow [2022-11-18 18:40:46,093 INFO L130 PetriNetUnfolder]: 18/235 cut-off events. [2022-11-18 18:40:46,093 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:40:46,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 18/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 124 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 201. Up to 3 conditions per place. [2022-11-18 18:40:46,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 239 transitions, 510 flow [2022-11-18 18:40:46,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 222 transitions, 468 flow [2022-11-18 18:40:46,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:40:46,125 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;@6d042f7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:40:46,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 18:40:46,212 INFO L130 PetriNetUnfolder]: 18/221 cut-off events. [2022-11-18 18:40:46,213 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:40:46,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:46,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:46,216 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 2 more)] === [2022-11-18 18:40:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1699147407, now seen corresponding path program 1 times [2022-11-18 18:40:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:46,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497547995] [2022-11-18 18:40:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:46,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:46,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:46,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497547995] [2022-11-18 18:40:46,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497547995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:46,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:46,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:40:46,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373332694] [2022-11-18 18:40:46,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:46,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:40:46,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:40:46,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:40:46,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 239 [2022-11-18 18:40:46,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 222 transitions, 468 flow. Second operand has 2 states, 2 states have (on average 220.5) internal successors, (441), 2 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:46,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:46,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 239 [2022-11-18 18:40:46,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:46,925 INFO L130 PetriNetUnfolder]: 101/488 cut-off events. [2022-11-18 18:40:46,925 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-11-18 18:40:46,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 488 events. 101/488 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1672 event pairs, 45 based on Foata normal form. 88/517 useless extension candidates. Maximal degree in co-relation 480. Up to 133 conditions per place. [2022-11-18 18:40:46,933 INFO L137 encePairwiseOnDemand]: 227/239 looper letters, 12 selfloop transitions, 0 changer transitions 7/210 dead transitions. [2022-11-18 18:40:46,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 210 transitions, 468 flow [2022-11-18 18:40:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:40:46,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 18:40:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 452 transitions. [2022-11-18 18:40:46,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456066945606695 [2022-11-18 18:40:46,958 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 452 transitions. [2022-11-18 18:40:46,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 452 transitions. [2022-11-18 18:40:46,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:46,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 452 transitions. [2022-11-18 18:40:46,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 226.0) internal successors, (452), 2 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:46,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:46,984 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:46,986 INFO L175 Difference]: Start difference. First operand has 217 places, 222 transitions, 468 flow. Second operand 2 states and 452 transitions. [2022-11-18 18:40:46,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 210 transitions, 468 flow [2022-11-18 18:40:46,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 210 transitions, 452 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 18:40:47,001 INFO L231 Difference]: Finished difference. Result has 210 places, 203 transitions, 414 flow [2022-11-18 18:40:47,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=210, PETRI_TRANSITIONS=203} [2022-11-18 18:40:47,009 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -7 predicate places. [2022-11-18 18:40:47,010 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 203 transitions, 414 flow [2022-11-18 18:40:47,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 220.5) internal successors, (441), 2 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:47,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:47,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:47,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:40:47,012 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 2 more)] === [2022-11-18 18:40:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:47,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1964607494, now seen corresponding path program 1 times [2022-11-18 18:40:47,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:47,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998811463] [2022-11-18 18:40:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:47,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998811463] [2022-11-18 18:40:47,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998811463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:47,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:47,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:40:47,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684420651] [2022-11-18 18:40:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:47,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:47,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:47,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:47,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:40:47,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 239 [2022-11-18 18:40:47,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 203 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:47,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:47,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 239 [2022-11-18 18:40:47,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:48,145 INFO L130 PetriNetUnfolder]: 692/1436 cut-off events. [2022-11-18 18:40:48,145 INFO L131 PetriNetUnfolder]: For 110/111 co-relation queries the response was YES. [2022-11-18 18:40:48,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 1436 events. 692/1436 cut-off events. For 110/111 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7667 event pairs, 65 based on Foata normal form. 0/1367 useless extension candidates. Maximal degree in co-relation 2455. Up to 335 conditions per place. [2022-11-18 18:40:48,167 INFO L137 encePairwiseOnDemand]: 234/239 looper letters, 51 selfloop transitions, 5 changer transitions 0/236 dead transitions. [2022-11-18 18:40:48,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 236 transitions, 599 flow [2022-11-18 18:40:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:40:48,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:40:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1073 transitions. [2022-11-18 18:40:48,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.897907949790795 [2022-11-18 18:40:48,173 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1073 transitions. [2022-11-18 18:40:48,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1073 transitions. [2022-11-18 18:40:48,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:48,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1073 transitions. [2022-11-18 18:40:48,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.6) internal successors, (1073), 5 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:48,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:48,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:48,185 INFO L175 Difference]: Start difference. First operand has 210 places, 203 transitions, 414 flow. Second operand 5 states and 1073 transitions. [2022-11-18 18:40:48,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 236 transitions, 599 flow [2022-11-18 18:40:48,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 236 transitions, 599 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:40:48,199 INFO L231 Difference]: Finished difference. Result has 210 places, 206 transitions, 445 flow [2022-11-18 18:40:48,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=210, PETRI_TRANSITIONS=206} [2022-11-18 18:40:48,202 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -7 predicate places. [2022-11-18 18:40:48,203 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 206 transitions, 445 flow [2022-11-18 18:40:48,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:48,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:48,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:48,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:40:48,205 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 2 more)] === [2022-11-18 18:40:48,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1119305790, now seen corresponding path program 2 times [2022-11-18 18:40:48,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:48,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088596764] [2022-11-18 18:40:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:48,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:48,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088596764] [2022-11-18 18:40:48,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088596764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:48,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:48,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:40:48,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584364988] [2022-11-18 18:40:48,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:48,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:48,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:48,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:48,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:40:48,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 239 [2022-11-18 18:40:48,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 206 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:48,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:48,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 239 [2022-11-18 18:40:48,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:49,080 INFO L130 PetriNetUnfolder]: 827/1769 cut-off events. [2022-11-18 18:40:49,080 INFO L131 PetriNetUnfolder]: For 491/492 co-relation queries the response was YES. [2022-11-18 18:40:49,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 1769 events. 827/1769 cut-off events. For 491/492 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10700 event pairs, 194 based on Foata normal form. 0/1660 useless extension candidates. Maximal degree in co-relation 3418. Up to 437 conditions per place. [2022-11-18 18:40:49,098 INFO L137 encePairwiseOnDemand]: 234/239 looper letters, 50 selfloop transitions, 7 changer transitions 0/237 dead transitions. [2022-11-18 18:40:49,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 237 transitions, 648 flow [2022-11-18 18:40:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:40:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:40:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1070 transitions. [2022-11-18 18:40:49,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.895397489539749 [2022-11-18 18:40:49,102 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1070 transitions. [2022-11-18 18:40:49,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1070 transitions. [2022-11-18 18:40:49,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:49,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1070 transitions. [2022-11-18 18:40:49,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:49,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:49,110 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:49,110 INFO L175 Difference]: Start difference. First operand has 210 places, 206 transitions, 445 flow. Second operand 5 states and 1070 transitions. [2022-11-18 18:40:49,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 237 transitions, 648 flow [2022-11-18 18:40:49,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 237 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:40:49,116 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 488 flow [2022-11-18 18:40:49,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2022-11-18 18:40:49,118 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, -1 predicate places. [2022-11-18 18:40:49,118 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 488 flow [2022-11-18 18:40:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:49,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:49,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:49,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:40:49,120 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 2 more)] === [2022-11-18 18:40:49,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:49,121 INFO L85 PathProgramCache]: Analyzing trace with hash -353664656, now seen corresponding path program 3 times [2022-11-18 18:40:49,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:49,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147953904] [2022-11-18 18:40:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:49,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:49,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:49,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147953904] [2022-11-18 18:40:49,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147953904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:49,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:49,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:40:49,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414776148] [2022-11-18 18:40:49,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:49,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:40:49,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:40:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:40:49,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 239 [2022-11-18 18:40:49,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 488 flow. Second operand has 10 states, 10 states have (on average 168.6) internal successors, (1686), 10 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:49,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:49,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 239 [2022-11-18 18:40:49,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:51,292 INFO L130 PetriNetUnfolder]: 2190/4237 cut-off events. [2022-11-18 18:40:51,293 INFO L131 PetriNetUnfolder]: For 2194/2194 co-relation queries the response was YES. [2022-11-18 18:40:51,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 4237 events. 2190/4237 cut-off events. For 2194/2194 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31170 event pairs, 313 based on Foata normal form. 72/4234 useless extension candidates. Maximal degree in co-relation 9381. Up to 1072 conditions per place. [2022-11-18 18:40:51,341 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 93 selfloop transitions, 10 changer transitions 3/254 dead transitions. [2022-11-18 18:40:51,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 254 transitions, 844 flow [2022-11-18 18:40:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:40:51,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:40:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1571 transitions. [2022-11-18 18:40:51,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7303579730357973 [2022-11-18 18:40:51,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1571 transitions. [2022-11-18 18:40:51,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1571 transitions. [2022-11-18 18:40:51,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:51,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1571 transitions. [2022-11-18 18:40:51,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 174.55555555555554) internal successors, (1571), 9 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:51,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:51,365 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:51,365 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 488 flow. Second operand 9 states and 1571 transitions. [2022-11-18 18:40:51,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 254 transitions, 844 flow [2022-11-18 18:40:51,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 254 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:40:51,382 INFO L231 Difference]: Finished difference. Result has 225 places, 213 transitions, 540 flow [2022-11-18 18:40:51,382 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=540, PETRI_PLACES=225, PETRI_TRANSITIONS=213} [2022-11-18 18:40:51,384 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 8 predicate places. [2022-11-18 18:40:51,384 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 213 transitions, 540 flow [2022-11-18 18:40:51,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 168.6) internal successors, (1686), 10 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:51,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:51,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:51,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:40:51,388 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 2 more)] === [2022-11-18 18:40:51,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash -592690519, now seen corresponding path program 1 times [2022-11-18 18:40:51,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:51,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056959322] [2022-11-18 18:40:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:51,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:51,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056959322] [2022-11-18 18:40:51,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056959322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:51,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:51,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063803924] [2022-11-18 18:40:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:51,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:51,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:51,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:51,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:51,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 239 [2022-11-18 18:40:51,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 213 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:51,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:51,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 239 [2022-11-18 18:40:51,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:52,110 INFO L130 PetriNetUnfolder]: 362/1193 cut-off events. [2022-11-18 18:40:52,110 INFO L131 PetriNetUnfolder]: For 463/465 co-relation queries the response was YES. [2022-11-18 18:40:52,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 1193 events. 362/1193 cut-off events. For 463/465 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7305 event pairs, 97 based on Foata normal form. 20/1145 useless extension candidates. Maximal degree in co-relation 2158. Up to 398 conditions per place. [2022-11-18 18:40:52,126 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 20 selfloop transitions, 2 changer transitions 1/219 dead transitions. [2022-11-18 18:40:52,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 219 transitions, 593 flow [2022-11-18 18:40:52,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:40:52,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2022-11-18 18:40:52,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9121338912133892 [2022-11-18 18:40:52,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2022-11-18 18:40:52,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2022-11-18 18:40:52,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:52,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2022-11-18 18:40:52,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,134 INFO L175 Difference]: Start difference. First operand has 225 places, 213 transitions, 540 flow. Second operand 3 states and 654 transitions. [2022-11-18 18:40:52,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 219 transitions, 593 flow [2022-11-18 18:40:52,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 219 transitions, 578 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-18 18:40:52,145 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 526 flow [2022-11-18 18:40:52,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2022-11-18 18:40:52,149 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 5 predicate places. [2022-11-18 18:40:52,149 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 526 flow [2022-11-18 18:40:52,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:52,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:52,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:40:52,151 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 2 more)] === [2022-11-18 18:40:52,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1754617501, now seen corresponding path program 1 times [2022-11-18 18:40:52,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:52,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973958998] [2022-11-18 18:40:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:52,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:40:52,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:52,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973958998] [2022-11-18 18:40:52,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973958998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:52,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:52,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:40:52,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827017363] [2022-11-18 18:40:52,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:52,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:40:52,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:40:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:40:52,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 239 [2022-11-18 18:40:52,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:52,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 239 [2022-11-18 18:40:52,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:52,940 INFO L130 PetriNetUnfolder]: 393/1344 cut-off events. [2022-11-18 18:40:52,941 INFO L131 PetriNetUnfolder]: For 512/515 co-relation queries the response was YES. [2022-11-18 18:40:52,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 1344 events. 393/1344 cut-off events. For 512/515 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8150 event pairs, 165 based on Foata normal form. 13/1258 useless extension candidates. Maximal degree in co-relation 2550. Up to 445 conditions per place. [2022-11-18 18:40:52,955 INFO L137 encePairwiseOnDemand]: 231/239 looper letters, 37 selfloop transitions, 6 changer transitions 9/226 dead transitions. [2022-11-18 18:40:52,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 226 transitions, 662 flow [2022-11-18 18:40:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:40:52,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:40:52,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1368 transitions. [2022-11-18 18:40:52,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8176927674835625 [2022-11-18 18:40:52,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1368 transitions. [2022-11-18 18:40:52,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1368 transitions. [2022-11-18 18:40:52,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:52,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1368 transitions. [2022-11-18 18:40:52,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 195.42857142857142) internal successors, (1368), 7 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,972 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,972 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 526 flow. Second operand 7 states and 1368 transitions. [2022-11-18 18:40:52,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 226 transitions, 662 flow [2022-11-18 18:40:52,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 660 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:40:52,980 INFO L231 Difference]: Finished difference. Result has 229 places, 214 transitions, 546 flow [2022-11-18 18:40:52,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=229, PETRI_TRANSITIONS=214} [2022-11-18 18:40:52,982 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 12 predicate places. [2022-11-18 18:40:52,982 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 214 transitions, 546 flow [2022-11-18 18:40:52,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.83333333333334) internal successors, (1157), 6 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:52,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:52,983 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:52,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:40:52,984 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 2 more)] === [2022-11-18 18:40:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash -418471532, now seen corresponding path program 1 times [2022-11-18 18:40:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:52,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648341004] [2022-11-18 18:40:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:52,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:40:53,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:53,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648341004] [2022-11-18 18:40:53,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648341004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:53,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:53,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:40:53,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537566541] [2022-11-18 18:40:53,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:53,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:40:53,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:40:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:40:53,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 239 [2022-11-18 18:40:53,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 214 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:53,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:53,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 239 [2022-11-18 18:40:53,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:53,680 INFO L130 PetriNetUnfolder]: 208/838 cut-off events. [2022-11-18 18:40:53,681 INFO L131 PetriNetUnfolder]: For 354/356 co-relation queries the response was YES. [2022-11-18 18:40:53,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1600 conditions, 838 events. 208/838 cut-off events. For 354/356 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4259 event pairs, 77 based on Foata normal form. 6/808 useless extension candidates. Maximal degree in co-relation 1585. Up to 266 conditions per place. [2022-11-18 18:40:53,688 INFO L137 encePairwiseOnDemand]: 236/239 looper letters, 19 selfloop transitions, 2 changer transitions 2/220 dead transitions. [2022-11-18 18:40:53,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 609 flow [2022-11-18 18:40:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:40:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:40:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2022-11-18 18:40:53,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9107391910739191 [2022-11-18 18:40:53,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2022-11-18 18:40:53,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2022-11-18 18:40:53,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:53,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2022-11-18 18:40:53,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:53,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:53,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 239.0) internal successors, (956), 4 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:53,696 INFO L175 Difference]: Start difference. First operand has 229 places, 214 transitions, 546 flow. Second operand 3 states and 653 transitions. [2022-11-18 18:40:53,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 609 flow [2022-11-18 18:40:53,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 597 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 18:40:53,707 INFO L231 Difference]: Finished difference. Result has 226 places, 215 transitions, 546 flow [2022-11-18 18:40:53,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=226, PETRI_TRANSITIONS=215} [2022-11-18 18:40:53,709 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 9 predicate places. [2022-11-18 18:40:53,709 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 215 transitions, 546 flow [2022-11-18 18:40:53,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:53,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:53,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:53,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:40:53,711 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 2 more)] === [2022-11-18 18:40:53,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1850159082, now seen corresponding path program 1 times [2022-11-18 18:40:53,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:53,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893933836] [2022-11-18 18:40:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:53,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:40:54,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:54,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893933836] [2022-11-18 18:40:54,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893933836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:54,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:54,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:40:54,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66697678] [2022-11-18 18:40:54,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:54,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:40:54,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:54,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:40:54,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:40:54,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 239 [2022-11-18 18:40:54,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 215 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:54,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:54,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 239 [2022-11-18 18:40:54,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:54,409 INFO L130 PetriNetUnfolder]: 216/949 cut-off events. [2022-11-18 18:40:54,410 INFO L131 PetriNetUnfolder]: For 436/451 co-relation queries the response was YES. [2022-11-18 18:40:54,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 949 events. 216/949 cut-off events. For 436/451 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4669 event pairs, 80 based on Foata normal form. 4/899 useless extension candidates. Maximal degree in co-relation 1857. Up to 286 conditions per place. [2022-11-18 18:40:54,418 INFO L137 encePairwiseOnDemand]: 229/239 looper letters, 37 selfloop transitions, 8 changer transitions 20/239 dead transitions. [2022-11-18 18:40:54,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 239 transitions, 738 flow [2022-11-18 18:40:54,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:40:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:40:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1754 transitions. [2022-11-18 18:40:54,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8154346815434682 [2022-11-18 18:40:54,426 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1754 transitions. [2022-11-18 18:40:54,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1754 transitions. [2022-11-18 18:40:54,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:54,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1754 transitions. [2022-11-18 18:40:54,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 194.88888888888889) internal successors, (1754), 9 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:54,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:54,437 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 239.0) internal successors, (2390), 10 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:54,438 INFO L175 Difference]: Start difference. First operand has 226 places, 215 transitions, 546 flow. Second operand 9 states and 1754 transitions. [2022-11-18 18:40:54,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 239 transitions, 738 flow [2022-11-18 18:40:54,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 239 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:40:54,446 INFO L231 Difference]: Finished difference. Result has 235 places, 216 transitions, 572 flow [2022-11-18 18:40:54,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=235, PETRI_TRANSITIONS=216} [2022-11-18 18:40:54,449 INFO L288 CegarLoopForPetriNet]: 217 programPoint places, 18 predicate places. [2022-11-18 18:40:54,449 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 216 transitions, 572 flow [2022-11-18 18:40:54,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.66666666666666) internal successors, (1162), 6 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:54,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:54,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:54,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:40:54,451 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 2 more)] === [2022-11-18 18:40:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:54,455 INFO L85 PathProgramCache]: Analyzing trace with hash 885624448, now seen corresponding path program 1 times [2022-11-18 18:40:54,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:54,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130266749] [2022-11-18 18:40:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:54,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:00,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:00,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130266749] [2022-11-18 18:41:00,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130266749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:00,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650554064] [2022-11-18 18:41:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:00,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:00,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:00,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:00,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe233830-8be8-423b-a175-a78bceb4d852/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:41:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:00,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-18 18:41:00,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:02,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:41:03,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:41:05,651 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 18:41:05,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 18:41:06,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 18:41:08,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:41:09,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:41:09,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:41:09,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:41:11,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 12 [2022-11-18 18:41:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:11,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:35,527 INFO L321 Elim1Store]: treesize reduction 27, result has 61.4 percent of original size [2022-11-18 18:41:35,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 240 treesize of output 138 [2022-11-18 18:41:35,764 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:35,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 118352 treesize of output 114346 [2022-11-18 18:41:36,474 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 113519 treesize of output 110487 [2022-11-18 18:41:36,914 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:36,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111042 treesize of output 86170 [2022-11-18 18:41:37,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:37,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86082 treesize of output 73690 [2022-11-18 18:41:38,122 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:38,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73602 treesize of output 67450