./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:51:42,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:51:42,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:51:43,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:51:43,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:51:43,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:51:43,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:51:43,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:51:43,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:51:43,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:51:43,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:51:43,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:51:43,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:51:43,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:51:43,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:51:43,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:51:43,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:51:43,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:51:43,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:51:43,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:51:43,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:51:43,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:51:43,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:51:43,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:51:43,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:51:43,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:51:43,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:51:43,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:51:43,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:51:43,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:51:43,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:51:43,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:51:43,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:51:43,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:51:43,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:51:43,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:51:43,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:51:43,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:51:43,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:51:43,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:51:43,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:51:43,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:51:43,070 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:51:43,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:51:43,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:51:43,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:51:43,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:51:43,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:51:43,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:51:43,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:51:43,072 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:51:43,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:51:43,073 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:51:43,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:51:43,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:51:43,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:51:43,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:51:43,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:51:43,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:51:43,074 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:51:43,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:51:43,074 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:51:43,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:51:43,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:51:43,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:51:43,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:51:43,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:51:43,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:51:43,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:51:43,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:51:43,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:51:43,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:51:43,076 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:51:43,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:51:43,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:51:43,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:51:43,077 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_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2021-12-06 23:51:43,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:51:43,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:51:43,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:51:43,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:51:43,292 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:51:43,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-12-06 23:51:43,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/data/fdf904bb8/4316072e03a8438ca9189b7857f1c1ac/FLAGa3e668514 [2021-12-06 23:51:43,709 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:51:43,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-12-06 23:51:43,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/data/fdf904bb8/4316072e03a8438ca9189b7857f1c1ac/FLAGa3e668514 [2021-12-06 23:51:43,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/data/fdf904bb8/4316072e03a8438ca9189b7857f1c1ac [2021-12-06 23:51:43,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:51:43,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:51:43,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:51:43,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:51:43,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:51:43,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:43,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cee9eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43, skipping insertion in model container [2021-12-06 23:51:43,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:43,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:51:43,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:51:43,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-12-06 23:51:43,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:51:43,902 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:51:43,926 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-12-06 23:51:43,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:51:43,944 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:51:43,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43 WrapperNode [2021-12-06 23:51:43,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:51:43,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:51:43,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:51:43,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:51:43,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:43,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:43,981 INFO L137 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 193 [2021-12-06 23:51:43,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:51:43,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:51:43,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:51:43,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:51:43,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:43,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:43,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:43,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:44,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:44,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:44,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:44,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:51:44,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:51:44,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:51:44,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:51:44,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (1/1) ... [2021-12-06 23:51:44,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:51:44,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:44,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:51:44,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:51:44,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:51:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:51:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:51:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:51:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-06 23:51:44,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-06 23:51:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-06 23:51:44,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-06 23:51:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-06 23:51:44,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-06 23:51:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:51:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:51:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:51:44,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:51:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:51:44,093 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 23:51:44,156 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:51:44,158 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:51:44,398 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:51:44,407 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:51:44,408 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-06 23:51:44,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:51:44 BoogieIcfgContainer [2021-12-06 23:51:44,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:51:44,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:51:44,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:51:44,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:51:44,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:51:43" (1/3) ... [2021-12-06 23:51:44,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c77a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:51:44, skipping insertion in model container [2021-12-06 23:51:44,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:51:43" (2/3) ... [2021-12-06 23:51:44,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14c77a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:51:44, skipping insertion in model container [2021-12-06 23:51:44,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:51:44" (3/3) ... [2021-12-06 23:51:44,415 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2021-12-06 23:51:44,419 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 23:51:44,419 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:51:44,419 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:51:44,419 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 23:51:44,447 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,447 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,447 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,448 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,448 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,448 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,448 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,448 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,448 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,448 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,448 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,449 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,449 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,449 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,449 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,450 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,450 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,450 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,450 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,451 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,451 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,451 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,451 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,451 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,451 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,451 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,451 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,451 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,452 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,452 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,452 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,452 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,452 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,452 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,452 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,452 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,452 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,453 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,453 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,453 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,453 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,453 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,454 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,455 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,456 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,456 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,456 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,456 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,456 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,456 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,456 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,457 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,457 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,457 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,457 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,457 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,457 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,457 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,457 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,457 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,458 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,459 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,459 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,459 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,459 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,459 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,459 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,459 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,459 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,459 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,461 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,462 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,462 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,462 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,462 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,462 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,465 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,465 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,465 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,465 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,465 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,465 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,467 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,467 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,467 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,467 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,467 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,467 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:51:44,469 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-06 23:51:44,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:51:44,510 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:51:44,510 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-06 23:51:44,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 279 places, 294 transitions, 612 flow [2021-12-06 23:51:44,597 INFO L129 PetriNetUnfolder]: 25/291 cut-off events. [2021-12-06 23:51:44,597 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 23:51:44,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 291 events. 25/291 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 179 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 234. Up to 2 conditions per place. [2021-12-06 23:51:44,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 294 transitions, 612 flow [2021-12-06 23:51:44,607 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 280 transitions, 578 flow [2021-12-06 23:51:44,649 INFO L129 PetriNetUnfolder]: 25/279 cut-off events. [2021-12-06 23:51:44,649 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 23:51:44,650 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:51:44,650 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:44,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:51:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1742839752, now seen corresponding path program 1 times [2021-12-06 23:51:44,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:44,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039050955] [2021-12-06 23:51:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:44,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:51:44,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:44,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039050955] [2021-12-06 23:51:44,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039050955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:51:44,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:51:44,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:51:44,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004800080] [2021-12-06 23:51:44,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:44,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:51:44,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:44,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:51:44,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:51:44,911 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 294 [2021-12-06 23:51:44,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 280 transitions, 578 flow. Second operand has 2 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:44,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:51:44,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 294 [2021-12-06 23:51:44,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:51:44,974 INFO L129 PetriNetUnfolder]: 7/262 cut-off events. [2021-12-06 23:51:44,974 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-06 23:51:44,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 262 events. 7/262 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 164 event pairs, 0 based on Foata normal form. 24/268 useless extension candidates. Maximal degree in co-relation 221. Up to 7 conditions per place. [2021-12-06 23:51:44,976 INFO L132 encePairwiseOnDemand]: 276/294 looper letters, 6 selfloop transitions, 0 changer transitions 11/262 dead transitions. [2021-12-06 23:51:44,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 262 transitions, 554 flow [2021-12-06 23:51:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:51:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-06 23:51:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 562 transitions. [2021-12-06 23:51:44,988 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.95578231292517 [2021-12-06 23:51:44,989 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 562 transitions. [2021-12-06 23:51:44,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 562 transitions. [2021-12-06 23:51:44,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:51:44,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 562 transitions. [2021-12-06 23:51:44,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 281.0) internal successors, (562), 2 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:45,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:45,005 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:45,006 INFO L186 Difference]: Start difference. First operand has 265 places, 280 transitions, 578 flow. Second operand 2 states and 562 transitions. [2021-12-06 23:51:45,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 262 transitions, 554 flow [2021-12-06 23:51:45,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 262 transitions, 542 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-06 23:51:45,025 INFO L242 Difference]: Finished difference. Result has 260 places, 251 transitions, 508 flow [2021-12-06 23:51:45,026 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=508, PETRI_PLACES=260, PETRI_TRANSITIONS=251} [2021-12-06 23:51:45,029 INFO L334 CegarLoopForPetriNet]: 265 programPoint places, -5 predicate places. [2021-12-06 23:51:45,030 INFO L470 AbstractCegarLoop]: Abstraction has has 260 places, 251 transitions, 508 flow [2021-12-06 23:51:45,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:45,030 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:51:45,031 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:45,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:51:45,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:51:45,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash -252625064, now seen corresponding path program 1 times [2021-12-06 23:51:45,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:45,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323407863] [2021-12-06 23:51:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:45,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:51:45,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:45,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323407863] [2021-12-06 23:51:45,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323407863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:51:45,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:51:45,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 23:51:45,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759714123] [2021-12-06 23:51:45,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:45,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:51:45,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:45,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:51:45,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:51:45,304 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 294 [2021-12-06 23:51:45,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 251 transitions, 508 flow. Second operand has 8 states, 8 states have (on average 177.75) internal successors, (1422), 8 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:45,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:51:45,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 294 [2021-12-06 23:51:45,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:51:45,788 INFO L129 PetriNetUnfolder]: 81/818 cut-off events. [2021-12-06 23:51:45,788 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-12-06 23:51:45,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 818 events. 81/818 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2966 event pairs, 36 based on Foata normal form. 2/749 useless extension candidates. Maximal degree in co-relation 1158. Up to 121 conditions per place. [2021-12-06 23:51:45,793 INFO L132 encePairwiseOnDemand]: 269/294 looper letters, 94 selfloop transitions, 18 changer transitions 111/378 dead transitions. [2021-12-06 23:51:45,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 378 transitions, 1220 flow [2021-12-06 23:51:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 23:51:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-06 23:51:45,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2409 transitions. [2021-12-06 23:51:45,800 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.630298273155416 [2021-12-06 23:51:45,800 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2409 transitions. [2021-12-06 23:51:45,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2409 transitions. [2021-12-06 23:51:45,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:51:45,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2409 transitions. [2021-12-06 23:51:45,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 185.30769230769232) internal successors, (2409), 13 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:45,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 294.0) internal successors, (4116), 14 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:45,818 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 294.0) internal successors, (4116), 14 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:45,818 INFO L186 Difference]: Start difference. First operand has 260 places, 251 transitions, 508 flow. Second operand 13 states and 2409 transitions. [2021-12-06 23:51:45,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 378 transitions, 1220 flow [2021-12-06 23:51:45,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 378 transitions, 1220 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 23:51:45,826 INFO L242 Difference]: Finished difference. Result has 268 places, 255 transitions, 594 flow [2021-12-06 23:51:45,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=594, PETRI_PLACES=268, PETRI_TRANSITIONS=255} [2021-12-06 23:51:45,827 INFO L334 CegarLoopForPetriNet]: 265 programPoint places, 3 predicate places. [2021-12-06 23:51:45,827 INFO L470 AbstractCegarLoop]: Abstraction has has 268 places, 255 transitions, 594 flow [2021-12-06 23:51:45,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 177.75) internal successors, (1422), 8 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:45,828 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:51:45,829 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:45,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:51:45,829 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:51:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:45,829 INFO L85 PathProgramCache]: Analyzing trace with hash 955285944, now seen corresponding path program 1 times [2021-12-06 23:51:45,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:45,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894754500] [2021-12-06 23:51:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:45,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 23:51:46,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:46,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894754500] [2021-12-06 23:51:46,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894754500] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:46,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854382218] [2021-12-06 23:51:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:46,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:46,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:46,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:51:46,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:51:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:46,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:51:46,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 23:51:46,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:51:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 23:51:46,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854382218] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:46,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:51:46,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2021-12-06 23:51:46,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338566630] [2021-12-06 23:51:46,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:46,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:51:46,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:46,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:51:46,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:51:46,801 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 294 [2021-12-06 23:51:46,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 255 transitions, 594 flow. Second operand has 7 states, 7 states have (on average 215.71428571428572) internal successors, (1510), 7 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:46,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:51:46,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 294 [2021-12-06 23:51:46,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:51:46,945 INFO L129 PetriNetUnfolder]: 55/443 cut-off events. [2021-12-06 23:51:46,945 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-12-06 23:51:46,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 443 events. 55/443 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1026 event pairs, 27 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 666. Up to 97 conditions per place. [2021-12-06 23:51:46,949 INFO L132 encePairwiseOnDemand]: 286/294 looper letters, 71 selfloop transitions, 7 changer transitions 0/261 dead transitions. [2021-12-06 23:51:46,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 261 transitions, 764 flow [2021-12-06 23:51:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:51:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 23:51:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1524 transitions. [2021-12-06 23:51:46,953 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7405247813411079 [2021-12-06 23:51:46,953 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1524 transitions. [2021-12-06 23:51:46,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1524 transitions. [2021-12-06 23:51:46,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:51:46,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1524 transitions. [2021-12-06 23:51:46,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 217.71428571428572) internal successors, (1524), 7 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:46,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 294.0) internal successors, (2352), 8 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:46,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 294.0) internal successors, (2352), 8 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:46,964 INFO L186 Difference]: Start difference. First operand has 268 places, 255 transitions, 594 flow. Second operand 7 states and 1524 transitions. [2021-12-06 23:51:46,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 261 transitions, 764 flow [2021-12-06 23:51:46,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 261 transitions, 718 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-12-06 23:51:46,970 INFO L242 Difference]: Finished difference. Result has 260 places, 257 transitions, 581 flow [2021-12-06 23:51:46,971 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=260, PETRI_TRANSITIONS=257} [2021-12-06 23:51:46,971 INFO L334 CegarLoopForPetriNet]: 265 programPoint places, -5 predicate places. [2021-12-06 23:51:46,971 INFO L470 AbstractCegarLoop]: Abstraction has has 260 places, 257 transitions, 581 flow [2021-12-06 23:51:46,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.71428571428572) internal successors, (1510), 7 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:46,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:51:46,973 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:47,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:51:47,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:47,175 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:51:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash 461159547, now seen corresponding path program 1 times [2021-12-06 23:51:47,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:47,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140630402] [2021-12-06 23:51:47,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:47,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:47,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:47,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140630402] [2021-12-06 23:51:47,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140630402] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:47,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559309403] [2021-12-06 23:51:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:47,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:47,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:47,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:51:47,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:51:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:47,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:51:47,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:47,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:51:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:48,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559309403] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:48,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:51:48,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2021-12-06 23:51:48,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633313630] [2021-12-06 23:51:48,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:48,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:51:48,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:51:48,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-12-06 23:51:48,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 294 [2021-12-06 23:51:48,124 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 257 transitions, 581 flow. Second operand has 9 states, 9 states have (on average 204.33333333333334) internal successors, (1839), 9 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:48,124 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:51:48,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 294 [2021-12-06 23:51:48,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:51:48,608 INFO L129 PetriNetUnfolder]: 1177/2432 cut-off events. [2021-12-06 23:51:48,609 INFO L130 PetriNetUnfolder]: For 1086/1524 co-relation queries the response was YES. [2021-12-06 23:51:48,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4946 conditions, 2432 events. 1177/2432 cut-off events. For 1086/1524 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15069 event pairs, 287 based on Foata normal form. 438/2679 useless extension candidates. Maximal degree in co-relation 4938. Up to 498 conditions per place. [2021-12-06 23:51:48,635 INFO L132 encePairwiseOnDemand]: 283/294 looper letters, 133 selfloop transitions, 17 changer transitions 0/323 dead transitions. [2021-12-06 23:51:48,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 323 transitions, 1064 flow [2021-12-06 23:51:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:51:48,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 23:51:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2308 transitions. [2021-12-06 23:51:48,642 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7136672850958565 [2021-12-06 23:51:48,642 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2308 transitions. [2021-12-06 23:51:48,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2308 transitions. [2021-12-06 23:51:48,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:51:48,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2308 transitions. [2021-12-06 23:51:48,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 209.8181818181818) internal successors, (2308), 11 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:48,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 294.0) internal successors, (3528), 12 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:48,659 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 294.0) internal successors, (3528), 12 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:48,659 INFO L186 Difference]: Start difference. First operand has 260 places, 257 transitions, 581 flow. Second operand 11 states and 2308 transitions. [2021-12-06 23:51:48,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 323 transitions, 1064 flow [2021-12-06 23:51:48,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 323 transitions, 1051 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 23:51:48,668 INFO L242 Difference]: Finished difference. Result has 270 places, 268 transitions, 661 flow [2021-12-06 23:51:48,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=661, PETRI_PLACES=270, PETRI_TRANSITIONS=268} [2021-12-06 23:51:48,670 INFO L334 CegarLoopForPetriNet]: 265 programPoint places, 5 predicate places. [2021-12-06 23:51:48,670 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 268 transitions, 661 flow [2021-12-06 23:51:48,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 204.33333333333334) internal successors, (1839), 9 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:48,671 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:51:48,671 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:48,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:51:48,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:48,873 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:51:48,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash 994210303, now seen corresponding path program 2 times [2021-12-06 23:51:48,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:48,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764415011] [2021-12-06 23:51:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:48,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:49,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:49,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764415011] [2021-12-06 23:51:49,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764415011] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:49,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130830006] [2021-12-06 23:51:49,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:51:49,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:49,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:49,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:51:49,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:51:49,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 23:51:49,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:51:49,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:51:49,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:51:49,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:51:49,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130830006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:51:49,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:51:49,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-06 23:51:49,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318102218] [2021-12-06 23:51:49,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:49,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:51:49,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:49,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:51:49,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:51:49,429 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 294 [2021-12-06 23:51:49,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 268 transitions, 661 flow. Second operand has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:49,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:51:49,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 294 [2021-12-06 23:51:49,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:51:50,041 INFO L129 PetriNetUnfolder]: 1595/3269 cut-off events. [2021-12-06 23:51:50,041 INFO L130 PetriNetUnfolder]: For 2204/2762 co-relation queries the response was YES. [2021-12-06 23:51:50,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7319 conditions, 3269 events. 1595/3269 cut-off events. For 2204/2762 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21784 event pairs, 576 based on Foata normal form. 559/3705 useless extension candidates. Maximal degree in co-relation 7307. Up to 1008 conditions per place. [2021-12-06 23:51:50,089 INFO L132 encePairwiseOnDemand]: 283/294 looper letters, 143 selfloop transitions, 14 changer transitions 10/347 dead transitions. [2021-12-06 23:51:50,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 347 transitions, 1236 flow [2021-12-06 23:51:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:51:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 23:51:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1844 transitions. [2021-12-06 23:51:50,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6969009826152683 [2021-12-06 23:51:50,094 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1844 transitions. [2021-12-06 23:51:50,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1844 transitions. [2021-12-06 23:51:50,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:51:50,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1844 transitions. [2021-12-06 23:51:50,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 204.88888888888889) internal successors, (1844), 9 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:50,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 294.0) internal successors, (2940), 10 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:50,103 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 294.0) internal successors, (2940), 10 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:50,103 INFO L186 Difference]: Start difference. First operand has 270 places, 268 transitions, 661 flow. Second operand 9 states and 1844 transitions. [2021-12-06 23:51:50,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 347 transitions, 1236 flow [2021-12-06 23:51:50,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 347 transitions, 1229 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 23:51:50,117 INFO L242 Difference]: Finished difference. Result has 280 places, 275 transitions, 750 flow [2021-12-06 23:51:50,118 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=280, PETRI_TRANSITIONS=275} [2021-12-06 23:51:50,118 INFO L334 CegarLoopForPetriNet]: 265 programPoint places, 15 predicate places. [2021-12-06 23:51:50,118 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 275 transitions, 750 flow [2021-12-06 23:51:50,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:50,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:51:50,120 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:50,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:51:50,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:50,322 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:51:50,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash 733892861, now seen corresponding path program 3 times [2021-12-06 23:51:50,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:50,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566041173] [2021-12-06 23:51:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:50,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:50,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566041173] [2021-12-06 23:51:50,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566041173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943060159] [2021-12-06 23:51:50,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:51:50,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:50,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:51:50,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:51:50,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-06 23:51:50,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:51:50,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:51:50,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:51:50,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:51:50,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943060159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:51:50,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:51:50,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-06 23:51:50,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285852069] [2021-12-06 23:51:50,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:50,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:51:50,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:50,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:51:50,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:51:50,893 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 294 [2021-12-06 23:51:50,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 275 transitions, 750 flow. Second operand has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:50,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:51:50,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 294 [2021-12-06 23:51:50,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:51:51,602 INFO L129 PetriNetUnfolder]: 2356/4851 cut-off events. [2021-12-06 23:51:51,602 INFO L130 PetriNetUnfolder]: For 4753/5565 co-relation queries the response was YES. [2021-12-06 23:51:51,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 4851 events. 2356/4851 cut-off events. For 4753/5565 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 35107 event pairs, 875 based on Foata normal form. 805/5469 useless extension candidates. Maximal degree in co-relation 11566. Up to 1704 conditions per place. [2021-12-06 23:51:51,661 INFO L132 encePairwiseOnDemand]: 283/294 looper letters, 144 selfloop transitions, 14 changer transitions 10/348 dead transitions. [2021-12-06 23:51:51,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 348 transitions, 1387 flow [2021-12-06 23:51:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:51:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 23:51:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1827 transitions. [2021-12-06 23:51:51,669 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2021-12-06 23:51:51,669 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1827 transitions. [2021-12-06 23:51:51,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1827 transitions. [2021-12-06 23:51:51,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:51:51,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1827 transitions. [2021-12-06 23:51:51,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:51,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 294.0) internal successors, (2940), 10 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:51,683 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 294.0) internal successors, (2940), 10 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:51,683 INFO L186 Difference]: Start difference. First operand has 280 places, 275 transitions, 750 flow. Second operand 9 states and 1827 transitions. [2021-12-06 23:51:51,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 348 transitions, 1387 flow [2021-12-06 23:51:51,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 348 transitions, 1353 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-12-06 23:51:51,704 INFO L242 Difference]: Finished difference. Result has 286 places, 281 transitions, 837 flow [2021-12-06 23:51:51,705 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=837, PETRI_PLACES=286, PETRI_TRANSITIONS=281} [2021-12-06 23:51:51,706 INFO L334 CegarLoopForPetriNet]: 265 programPoint places, 21 predicate places. [2021-12-06 23:51:51,706 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 281 transitions, 837 flow [2021-12-06 23:51:51,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:51,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:51:51,707 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:51,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:51:51,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:51,910 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:51:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1540889437, now seen corresponding path program 4 times [2021-12-06 23:51:51,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:51,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310205089] [2021-12-06 23:51:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:51,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:52,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:52,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310205089] [2021-12-06 23:51:52,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310205089] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:52,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618663014] [2021-12-06 23:51:52,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 23:51:52,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:52,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:52,059 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:51:52,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:51:52,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 23:51:52,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:51:52,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:51:52,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:52,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:51:52,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:52,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618663014] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:52,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:51:52,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2021-12-06 23:51:52,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248107077] [2021-12-06 23:51:52,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:52,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:51:52,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:51:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:51:52,797 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 294 [2021-12-06 23:51:52,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 281 transitions, 837 flow. Second operand has 9 states, 9 states have (on average 204.33333333333334) internal successors, (1839), 9 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:52,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:51:52,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 294 [2021-12-06 23:51:52,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:51:53,549 INFO L129 PetriNetUnfolder]: 2667/5224 cut-off events. [2021-12-06 23:51:53,549 INFO L130 PetriNetUnfolder]: For 7304/8271 co-relation queries the response was YES. [2021-12-06 23:51:53,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13525 conditions, 5224 events. 2667/5224 cut-off events. For 7304/8271 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 38142 event pairs, 289 based on Foata normal form. 964/6058 useless extension candidates. Maximal degree in co-relation 13504. Up to 1304 conditions per place. [2021-12-06 23:51:53,586 INFO L132 encePairwiseOnDemand]: 281/294 looper letters, 144 selfloop transitions, 37 changer transitions 0/354 dead transitions. [2021-12-06 23:51:53,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 354 transitions, 1490 flow [2021-12-06 23:51:53,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:51:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-06 23:51:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2320 transitions. [2021-12-06 23:51:53,591 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.717377860235003 [2021-12-06 23:51:53,591 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2320 transitions. [2021-12-06 23:51:53,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2320 transitions. [2021-12-06 23:51:53,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:51:53,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2320 transitions. [2021-12-06 23:51:53,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 210.9090909090909) internal successors, (2320), 11 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:53,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 294.0) internal successors, (3528), 12 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:53,602 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 294.0) internal successors, (3528), 12 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:53,602 INFO L186 Difference]: Start difference. First operand has 286 places, 281 transitions, 837 flow. Second operand 11 states and 2320 transitions. [2021-12-06 23:51:53,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 354 transitions, 1490 flow [2021-12-06 23:51:53,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 354 transitions, 1456 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-12-06 23:51:53,622 INFO L242 Difference]: Finished difference. Result has 293 places, 293 transitions, 1036 flow [2021-12-06 23:51:53,623 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1036, PETRI_PLACES=293, PETRI_TRANSITIONS=293} [2021-12-06 23:51:53,623 INFO L334 CegarLoopForPetriNet]: 265 programPoint places, 28 predicate places. [2021-12-06 23:51:53,623 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 293 transitions, 1036 flow [2021-12-06 23:51:53,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 204.33333333333334) internal successors, (1839), 9 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:53,624 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:51:53,624 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:53,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:51:53,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:53,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:51:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2134251955, now seen corresponding path program 5 times [2021-12-06 23:51:53,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703100561] [2021-12-06 23:51:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:53,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:53,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:53,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703100561] [2021-12-06 23:51:53,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703100561] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:53,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729143304] [2021-12-06 23:51:53,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:51:53,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:53,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:53,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:51:53,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:51:54,008 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:51:54,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:51:54,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:51:54,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:54,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:51:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:54,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729143304] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:51:54,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:51:54,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2021-12-06 23:51:54,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017549806] [2021-12-06 23:51:54,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:51:54,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 23:51:54,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 23:51:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:51:54,399 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 294 [2021-12-06 23:51:54,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 293 transitions, 1036 flow. Second operand has 16 states, 16 states have (on average 199.3125) internal successors, (3189), 16 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:54,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:51:54,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 294 [2021-12-06 23:51:54,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:51:57,625 INFO L129 PetriNetUnfolder]: 10255/19257 cut-off events. [2021-12-06 23:51:57,625 INFO L130 PetriNetUnfolder]: For 36959/37273 co-relation queries the response was YES. [2021-12-06 23:51:57,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55679 conditions, 19257 events. 10255/19257 cut-off events. For 36959/37273 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 158881 event pairs, 745 based on Foata normal form. 20/19204 useless extension candidates. Maximal degree in co-relation 55656. Up to 1909 conditions per place. [2021-12-06 23:51:57,783 INFO L132 encePairwiseOnDemand]: 265/294 looper letters, 334 selfloop transitions, 134 changer transitions 0/635 dead transitions. [2021-12-06 23:51:57,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 635 transitions, 3612 flow [2021-12-06 23:51:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 23:51:57,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-06 23:51:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 5177 transitions. [2021-12-06 23:51:57,793 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7043537414965987 [2021-12-06 23:51:57,793 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 5177 transitions. [2021-12-06 23:51:57,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 5177 transitions. [2021-12-06 23:51:57,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:51:57,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 5177 transitions. [2021-12-06 23:51:57,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 207.08) internal successors, (5177), 25 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:57,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 294.0) internal successors, (7644), 26 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:57,814 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 294.0) internal successors, (7644), 26 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:57,814 INFO L186 Difference]: Start difference. First operand has 293 places, 293 transitions, 1036 flow. Second operand 25 states and 5177 transitions. [2021-12-06 23:51:57,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 635 transitions, 3612 flow [2021-12-06 23:51:58,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 635 transitions, 3516 flow, removed 16 selfloop flow, removed 6 redundant places. [2021-12-06 23:51:58,080 INFO L242 Difference]: Finished difference. Result has 327 places, 382 transitions, 2264 flow [2021-12-06 23:51:58,081 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2264, PETRI_PLACES=327, PETRI_TRANSITIONS=382} [2021-12-06 23:51:58,081 INFO L334 CegarLoopForPetriNet]: 265 programPoint places, 62 predicate places. [2021-12-06 23:51:58,081 INFO L470 AbstractCegarLoop]: Abstraction has has 327 places, 382 transitions, 2264 flow [2021-12-06 23:51:58,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 199.3125) internal successors, (3189), 16 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:58,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:51:58,082 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:51:58,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:51:58,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:58,283 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:51:58,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:51:58,285 INFO L85 PathProgramCache]: Analyzing trace with hash 982030349, now seen corresponding path program 6 times [2021-12-06 23:51:58,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:51:58,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448328590] [2021-12-06 23:51:58,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:51:58,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:51:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:51:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:51:58,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:51:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448328590] [2021-12-06 23:51:58,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448328590] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:51:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612870778] [2021-12-06 23:51:58,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:51:58,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:51:58,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:51:58,388 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:51:58,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:51:58,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-12-06 23:51:58,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:51:58,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:51:58,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:51:58,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 23:51:58,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:51:58,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612870778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:51:58,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:51:58,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-06 23:51:58,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380009123] [2021-12-06 23:51:58,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:51:58,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:51:58,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:51:58,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:51:58,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:51:58,689 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 294 [2021-12-06 23:51:58,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 382 transitions, 2264 flow. Second operand has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:51:58,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:51:58,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 294 [2021-12-06 23:51:58,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:52:00,244 INFO L129 PetriNetUnfolder]: 4062/8531 cut-off events. [2021-12-06 23:52:00,244 INFO L130 PetriNetUnfolder]: For 35178/36279 co-relation queries the response was YES. [2021-12-06 23:52:00,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28969 conditions, 8531 events. 4062/8531 cut-off events. For 35178/36279 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 68784 event pairs, 1359 based on Foata normal form. 69/8388 useless extension candidates. Maximal degree in co-relation 28930. Up to 3043 conditions per place. [2021-12-06 23:52:00,321 INFO L132 encePairwiseOnDemand]: 283/294 looper letters, 200 selfloop transitions, 39 changer transitions 7/443 dead transitions. [2021-12-06 23:52:00,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 443 transitions, 3025 flow [2021-12-06 23:52:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:52:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 23:52:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1833 transitions. [2021-12-06 23:52:00,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6927437641723356 [2021-12-06 23:52:00,325 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1833 transitions. [2021-12-06 23:52:00,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1833 transitions. [2021-12-06 23:52:00,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:52:00,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1833 transitions. [2021-12-06 23:52:00,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 203.66666666666666) internal successors, (1833), 9 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:52:00,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 294.0) internal successors, (2940), 10 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:52:00,332 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 294.0) internal successors, (2940), 10 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:52:00,332 INFO L186 Difference]: Start difference. First operand has 327 places, 382 transitions, 2264 flow. Second operand 9 states and 1833 transitions. [2021-12-06 23:52:00,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 443 transitions, 3025 flow [2021-12-06 23:52:00,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 443 transitions, 2964 flow, removed 20 selfloop flow, removed 6 redundant places. [2021-12-06 23:52:00,451 INFO L242 Difference]: Finished difference. Result has 334 places, 387 transitions, 2391 flow [2021-12-06 23:52:00,452 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2391, PETRI_PLACES=334, PETRI_TRANSITIONS=387} [2021-12-06 23:52:00,453 INFO L334 CegarLoopForPetriNet]: 265 programPoint places, 69 predicate places. [2021-12-06 23:52:00,453 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 387 transitions, 2391 flow [2021-12-06 23:52:00,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:52:00,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:52:00,453 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:52:00,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:52:00,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 23:52:00,655 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-06 23:52:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:52:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1318242584, now seen corresponding path program 1 times [2021-12-06 23:52:00,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:52:00,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167128451] [2021-12-06 23:52:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:00,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:52:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:52:02,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:52:02,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167128451] [2021-12-06 23:52:02,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167128451] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:52:02,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980585603] [2021-12-06 23:52:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:52:02,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:52:02,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:52:02,505 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:52:02,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0acccd4b-a777-46e3-8d37-25106a598587/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:52:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:52:02,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 124 conjunts are in the unsatisfiable core [2021-12-06 23:52:02,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:52:02,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:52:03,638 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 23:52:03,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 23:52:03,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2021-12-06 23:52:04,294 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-06 23:52:04,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-06 23:52:04,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-12-06 23:52:05,260 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-12-06 23:52:05,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2021-12-06 23:52:05,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-12-06 23:52:06,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:52:06,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:52:06,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-06 23:52:06,859 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 23:52:06,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2021-12-06 23:52:07,526 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 23:52:07,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 36 [2021-12-06 23:52:09,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 23:52:09,984 INFO L354 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2021-12-06 23:52:09,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 32 [2021-12-06 23:52:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:52:41,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:12,445 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 23:58:12,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 934 treesize of output 611 [2021-12-06 23:58:12,495 INFO L173 IndexEqualityManager]: detected equality via solver